{"title":"HUUM STEEL Sauna Heaters","description":"\u003cp\u003eSTEEL is the plain one, and that is the point: a steel casing, a stone bed on top, and nothing else to pay for or go wrong.\u003c\/p\u003e[split]","products":[{"product_id":"huum-steel-safety-rail","title":"HUUM Safety Rail | STEEL 6, 9 and 11 Sauna Heaters","description":"\u003cstyle\u003e.hsrail{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--body);line-height:1.65;letter-spacing:normal;-webkit-font-smoothing:antialiased;background:#fff}.hsrail *{box-sizing:border-box}.hsrail .hsrail-c img{margin:0 !important;border:0}.hsrail .hsrail-c{max-width:1000px;margin:0 auto;padding:0 20px}.hsrail section{padding:52px 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.hsrail-ladder.hsrail-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hsrail .hsrail-ladder.hsrail-out td:last-child::before{content:\"Output:\\00a0\"}}.hsrail .hsrail-tw + p,.hsrail .hsrail-tw + h3,.hsrail .hsrail-warn + p,.hsrail .hsrail-warn + h3,.hsrail .hsrail-more + p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hsrail\"\u003e\n\u003csection id=\"overview\"\u003e\n\u003cdiv class=\"hsrail-c\"\u003e\n\u003cp class=\"hsrail-eyebrow\"\u003eSafety accessory\u003c\/p\u003e\n\u003ch2\u003eHUUM Safety Rail\u003c\/h2\u003e\n\u003cp class=\"hsrail-lead\"\u003eA wooden frame around the top of the STEEL, to help prevent accidental contact with the hot heater and stones. The profiles are wood and the fasteners are stainless steel. The ends of the supports are bent around the heater body with pliers, so it needs no fixing to the wall.\u003c\/p\u003e\n\u003cp\u003eFitting the STEEL reflector as well? HUUM's order is reflector first, then the rail's wooden profiles.\u003c\/p\u003e\n\u003cp\u003eHUUM asks for all wooden parts to be treated with a heat resistant, non toxic wood preservative, reapplied at least once a year, to keep the wood from warping, cracking or decaying.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e STEEL 6, STEEL 9 and STEEL 11. Not made for the STEEL Mini 4, which hangs on the wall and has a narrower body. Check the model on your heater's rating plate before you order.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsrail-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-safety-rail.jpg?width=1200\" alt=\"HUUM safety rail for STEEL heaters\" loading=\"eager\" width=\"1200\" height=\"1200\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eHUUM Safety Rail, as HUUM supplies it.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cdiv class=\"hsrail-stat3\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsrail-lbl\"\u003eFits\u003c\/p\u003e\n\u003cp class=\"hsrail-big\"\u003eHUUM STEEL 6, 9, 11\u003c\/p\u003e\n\u003cp\u003eRead the model from the heater’s rating plate before you order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsrail-lbl\"\u003eMaterial\u003c\/p\u003e\n\u003cp class=\"hsrail-big\"\u003eWood, stainless steel fasteners\u003c\/p\u003e\n\u003cp\u003eHUUM's published material for this part.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsrail-lbl\"\u003eMounting\u003c\/p\u003e\n\u003cp class=\"hsrail-big\"\u003eSupports bend around the heater body\u003c\/p\u003e\n\u003cp\u003eHow the part fixes in place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsrail-tinted\" id=\"fit\"\u003e\n\u003cdiv class=\"hsrail-c\"\u003e\n\u003cp class=\"hsrail-eyebrow\"\u003eBefore you order\u003c\/p\u003e\n\u003ch2\u003eWhich heaters this safety rail fits\u003c\/h2\u003e\n\u003ch3\u003eIn the set\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWooden profiles\u003c\/li\u003e\n\u003cli\u003e4 corner plates\u003c\/li\u003e\n\u003cli\u003eSupports\u003c\/li\u003e\n\u003cli\u003eScrews\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsrail-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-safety-rail-in-sauna.jpg?width=1200\" alt=\"HUUM STEEL heater with its safety rail in a sauna\" loading=\"lazy\" width=\"1200\" height=\"1200\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eHUUM Safety Rail\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"specs\"\u003e\n\u003cdiv class=\"hsrail-c\"\u003e\n\u003cp class=\"hsrail-eyebrow\"\u003eReference\u003c\/p\u003e\n\u003ch2\u003eHUUM Safety Rail specifications\u003c\/h2\u003e\n\u003cp class=\"hsrail-lead\"\u003eHUUM's own figures for this part.\u003c\/p\u003e\n\u003cdiv class=\"hsrail-tw\"\u003e\u003ctable class=\"hsrail-spec\"\u003e\n\u003ccaption\u003eHUUM Safety Rail reference\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eH3006012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eHUUM STEEL 6, 9, 11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eWood, stainless steel fasteners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eSupports bend around the heater body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsrail-tinted\" id=\"faq\"\u003e\n\u003cdiv class=\"hsrail-c\"\u003e\n\u003cp class=\"hsrail-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n\u003ch2\u003eHUUM Safety Rail questions buyers ask\u003c\/h2\u003e\n\u003cdiv class=\"hsrail-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich heaters does this fit?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eSTEEL 6, STEEL 9 and STEEL 11.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat does it do?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eA wooden frame around the top of the STEEL, to help prevent accidental contact with the hot heater and stones.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the wood need any care?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eYes, annually. The treatment HUUM specifies is a heat resistant, non toxic wood preservative, and the reason is that untreated timber in a sauna warps, cracks and in time decays.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it fit the Mini?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eNot made for the STEEL Mini 4, which hangs on the wall and has a narrower body.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is it made of?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eThe profiles are wood and the fasteners are stainless steel.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat comes in the set?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eWooden profiles, 4 corner plates, Supports, Screws.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the part number?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eH3006012.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsrail-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsrail-c\"\u003e\n\u003cp class=\"hsrail-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eCheck the model before you order\u003c\/h2\u003e\n\u003cp\u003eTell us which HUUM heater you have and we will confirm this safety rail fits it. The Mini and the full size share a name and take different parts, so the rating plate settles it.\u003c\/p\u003e\n\u003cdiv class=\"hsrail-who\"\u003e\n\u003cimg class=\"hsrail-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsrail-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsrail-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"Default Title","offer_id":53514266313071,"sku":"H3006012","price":409.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-safety-rail.jpg?v=1790068055"},{"product_id":"huum-steel-reflector","title":"HUUM Reflector Panel | STEEL 6, 9 and 11 Sauna Heaters","description":"\u003cstyle\u003e.hsrefl{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--body);line-height:1.65;letter-spacing:normal;-webkit-font-smoothing:antialiased;background:#fff}.hsrefl *{box-sizing:border-box}.hsrefl 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.hsrefl-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hsrefl .hsrefl-ladder.hsrefl-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hsrefl .hsrefl-ladder.hsrefl-out td:last-child::before{content:\"Output:\\00a0\"}}.hsrefl .hsrefl-tw + p,.hsrefl .hsrefl-tw + h3,.hsrefl .hsrefl-warn + p,.hsrefl .hsrefl-warn + h3,.hsrefl .hsrefl-more + p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hsrefl\"\u003e\n\u003csection id=\"overview\"\u003e\n\u003cdiv class=\"hsrefl-c\"\u003e\n\u003cp class=\"hsrefl-eyebrow\"\u003eClearance accessory\u003c\/p\u003e\n\u003ch2\u003eHUUM Reflector Panel\u003c\/h2\u003e\n\u003cp class=\"hsrefl-lead\"\u003eA stainless steel panel that hooks onto the side of the STEEL. HUUM states that a reflector halves the heater's safety distance from the walls.\u003c\/p\u003e\n\u003cp\u003eConfirm your layout against the heater manual before you build closer to a wall. HUUM does not say which of the printed distances the reduction applies to, and your inspector has the final say.\u003c\/p\u003e\n\u003cp\u003eOn the STEEL the panel goes on before the stones and before the wooden profiles of a safety rail, with its top edge level with the top of the heater.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e STEEL 6, STEEL 9 and STEEL 11. Not made for the STEEL Mini 4. Check the model on your heater's rating plate before you order.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsrefl-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-reflector.jpg?width=1200\" alt=\"HUUM stainless reflector panel for STEEL heaters\" loading=\"eager\" width=\"1200\" height=\"1200\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eHUUM Reflector Panel, as HUUM supplies it.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cdiv class=\"hsrefl-stat3\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsrefl-lbl\"\u003eFits\u003c\/p\u003e\n\u003cp class=\"hsrefl-big\"\u003eHUUM STEEL 6, 9, 11\u003c\/p\u003e\n\u003cp\u003eRead the model from the heater’s rating plate before you order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsrefl-lbl\"\u003eMaterial\u003c\/p\u003e\n\u003cp class=\"hsrefl-big\"\u003eStainless steel\u003c\/p\u003e\n\u003cp\u003eHUUM's published material for this part.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsrefl-lbl\"\u003eMounting\u003c\/p\u003e\n\u003cp class=\"hsrefl-big\"\u003eHooks onto the heater\u003c\/p\u003e\n\u003cp\u003eHow the part fixes in place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsrefl-tinted\" id=\"fit\"\u003e\n\u003cdiv class=\"hsrefl-c\"\u003e\n\u003cp class=\"hsrefl-eyebrow\"\u003eBefore you order\u003c\/p\u003e\n\u003ch2\u003eWhich heaters this reflector panel fits\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"specs\"\u003e\n\u003cdiv class=\"hsrefl-c\"\u003e\n\u003cp class=\"hsrefl-eyebrow\"\u003eReference\u003c\/p\u003e\n\u003ch2\u003eHUUM Reflector Panel specifications\u003c\/h2\u003e\n\u003cp class=\"hsrefl-lead\"\u003eHUUM's own figures for this part.\u003c\/p\u003e\n\u003cdiv class=\"hsrefl-tw\"\u003e\u003ctable class=\"hsrefl-spec\"\u003e\n\u003ccaption\u003eHUUM Reflector Panel reference\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eH3006022\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eHUUM STEEL 6, 9, 11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eHooks onto the heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsrefl-tinted\" id=\"faq\"\u003e\n\u003cdiv class=\"hsrefl-c\"\u003e\n\u003cp class=\"hsrefl-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n\u003ch2\u003eHUUM Reflector Panel questions buyers ask\u003c\/h2\u003e\n\u003cdiv class=\"hsrefl-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich heaters does this fit?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eSTEEL 6, STEEL 9 and STEEL 11.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it change the heater's safety distances?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eHUUM states that a reflector halves the heater's safety distance from the walls.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhere does it sit on the heater?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eTop edge level with the top of the heater. Fit it before you lay the stones, and before the wooden profiles if a safety rail is going on as well.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAnything to check before building closer to a wall?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eConfirm your layout against the heater manual before you build closer to a wall.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is it made of?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eA stainless steel panel that hooks onto the side of the STEEL.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the part number?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eH3006022.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs it covered by HUUM's warranty?\u003c\/summary\u003e\u003cdiv class=\"fb\"\u003e\u003cp\u003eHUUM's warranty lists its accessories among the exclusions, so this is sold as a part rather than a warranted item. Tell us if something arrives damaged and we take it up with the supplier.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsrefl-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsrefl-c\"\u003e\n\u003cp class=\"hsrefl-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eCheck the model before you order\u003c\/h2\u003e\n\u003cp\u003eTell us which HUUM heater you have and we will confirm this reflector panel fits it. The Mini and the full size share a name and take different parts, so the rating plate settles it.\u003c\/p\u003e\n\u003cdiv class=\"hsrefl-who\"\u003e\n\u003cimg class=\"hsrefl-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsrefl-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsrefl-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"Default Title","offer_id":53514266607983,"sku":"H3006022","price":294.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-reflector.jpg?v=1790068102"},{"product_id":"huum-steel-mini-4-electric-sauna-heater","title":"HUUM STEEL Mini 4 Electric Sauna Heater, 4 kW","description":"\u003cstyle\u003e.hsteelmini4{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--body);line-height:1.65;letter-spacing:normal;-webkit-font-smoothing:antialiased;background:#fff}.hsteelmini4 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table.hsteelmini4-cmp thead th:first-child{position:sticky;left:0;z-index:2;background:var(--fill)}@media screen and (max-width:560px){.hsteelmini4 .hsteelmini4-ladder td:last-child::before{content:\"Nameplate draw:\\00a0\";font-weight:700;color:var(--ink)}}@media screen and (max-width:480px){.hsteelmini4 table.hsteelmini4-spec th,.hsteelmini4 table.hsteelmini4-spec td{display:block;width:auto}.hsteelmini4 table.hsteelmini4-spec th{border-bottom:0;padding-bottom:0}}.hsteelmini4 .hsteelmini4-vid .video-wrapper{position:absolute !important;inset:0;width:100%;height:100%;padding:0 !important;margin:0}.hsteelmini4 .hsteelmini4-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.hsteelmini4 .hsteelmini4-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.hsteelmini4 .hsteelmini4-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.hsteelmini4 .hsteelmini4-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.hsteelmini4 .hsteelmini4-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}.hsteelmini4 .hsteelmini4-close p.hsteelmini4-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hsteelmini4 .hsteelmini4-stat3 a{color:var(--bright)}.hsteelmini4 .hsteelmini4-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hsteelmini4 .hsteelmini4-cmp thead a .hsteelmini4-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hsteelmini4 .hsteelmini4-ladder.hsteelmini4-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hsteelmini4 .hsteelmini4-ladder.hsteelmini4-out td:last-child::before{content:\"Output:\\00a0\"}}.hsteelmini4 .hsteelmini4-tw + p,.hsteelmini4 .hsteelmini4-tw + h3,.hsteelmini4 .hsteelmini4-warn + p,.hsteelmini4 .hsteelmini4-warn + h3,.hsteelmini4 .hsteelmini4-more + p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hsteelmini4\"\u003e\n\u003csection id=\"overview\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cdetails class=\"hsteelmini4-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hsteelmini4-ct\"\u003e7 sections\u003c\/span\u003e\u003c\/summary\u003e\u003col\u003e\n\u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fit\"\u003eWill it fit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#parts\"\u003eWhat you need\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#electrical\"\u003eBreaker and wire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#stones\"\u003eStone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eQuestions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#order\"\u003eOrder\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/details\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eThe wall mounted STEEL\u003c\/p\u003e\n    \u003ch2\u003eThe HUUM STEEL Mini 4 is a 4 kW wall mounted electric sauna heater for rooms of 106 to 177 cubic feet\u003c\/h2\u003e\n    \u003cp class=\"hsteelmini4-lead\"\u003eThe smallest STEEL and the only one that hangs on the wall, for rooms of 106 to 177 cubic feet. It is 6.3 inches deep and asks for only 2 inches to the wall beside it.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-stat3\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteelmini4-lbl\"\u003eThe room\u003c\/p\u003e\n        \u003cp class=\"hsteelmini4-big\"\u003e106 to 177 cu. ft.\u003c\/p\u003e\n        \u003cp\u003eLength by width by height, in feet. Add 3.3 cubic feet for every square foot of uninsulated glass, tile or brick wall, then size from the adjusted number.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteelmini4-lbl\"\u003eRated current\u003c\/p\u003e\n        \u003cp class=\"hsteelmini4-big\"\u003e14.58 A at 240 V\u003c\/p\u003e\n        \u003cp\u003eHUUM's manual calls for a 20 A breaker and 12 AWG cable, the lightest circuit in the range. It is hardwired by a licensed electrician, who sizes the circuit to the National Electrical Code, which can call for more.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteelmini4-lbl\"\u003eThe rest of the order\u003c\/p\u003e\n        \u003cp class=\"hsteelmini4-big\"\u003eControl and 4 boxes of stone\u003c\/p\u003e\n        \u003cp\u003eNeither is in the carton, and neither needs a second order: open \u003cstrong\u003eComplete your heater\u003c\/strong\u003e just above the Add to Cart button and both travel on this one. A \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU control\u003c\/a\u003e runs the heater from outside the room, and this heater holds about 132 lb (60 kg) of \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003esauna stone\u003c\/a\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4-tinted\" id=\"fit\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eSizing\u003c\/p\u003e\n    \u003ch2\u003eWill the HUUM STEEL Mini 4 heat your sauna?\u003c\/h2\u003e\n    \u003cp class=\"hsteelmini4-lead\"\u003eSauna heaters are sized on room volume, not floor area. Measure the room in feet and multiply length by width by height, then pick the heater whose published range contains that figure.\u003c\/p\u003e\n    \u003cp\u003eHUUM rates the STEEL Mini 4 for \u003cstrong\u003e106 to 177 cubic feet\u003c\/strong\u003e on a 240 volt supply, and its manual warns that the warranty does not apply if the heater and room are dimensioned incorrectly.\u003c\/p\u003e\n    \u003cp\u003eCold surfaces change the answer. HUUM's manual says to add \u003cstrong\u003e3.3 cubic feet of volume for every square foot\u003c\/strong\u003e of uninsulated brick, tile or glass wall in the room. It does not say whether a glass door counts, so counting it is the cautious choice.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-tw\"\u003e\u003ctable class=\"hsteelmini4-ladder hsteelmini4-out\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n\u003ctr class=\"hsteelmini4-on\"\u003e\n\u003ctd class=\"hsteelmini4-kw\"\u003eSTEEL Mini 4 \u003cspan class=\"hsteelmini4-tag\"\u003eThis heater\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft. at 240 V, 106 to 159 at 208 V\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteelmini4-kw\"\u003eSTEEL 6\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft. at 240 V, 142 to 248 at 208 V\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteelmini4-kw\"\u003eSTEEL 9\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft. at 240 V, 212 to 354 at 208 V\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteelmini4-kw\"\u003eSTEEL 11\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft. at 240 V, 265 to 424 at 208 V\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA worked example for the STEEL Mini 4\u003c\/h3\u003e\n    \u003cp\u003eTake a room 5 feet by 4 feet with a 7.5 foot ceiling: 20 square feet of floor and 150 cubic feet, inside this heater's 106 to 177. Count a full glass door, take 13 square feet as an example and measure your own, and at 3.3 cubic feet a square foot the room behaves like about 193 cubic feet, which is past the STEEL Mini 4 and into STEEL 6 territory.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's STEEL manual gives a minimum sauna room height of 86.6 inches (2200 mm)\u003c\/b\u003e, with a regular height of 86.6 to 91 inches, and advises bringing a taller ceiling down into that range to reduce the volume.\u003c\/p\u003e\u003c\/div\u003e\n    \u003cp\u003eNot sure which way a borderline room goes? Our \u003ca href=\"\/pages\/find-your-sauna-heater\"\u003esauna heater finder\u003c\/a\u003e walks the same arithmetic, the \u003ca href=\"\/pages\/sauna-heater-buyers-guide\"\u003esauna heater buyers guide\u003c\/a\u003e explains what the numbers mean, or call and we will do it with you.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"design\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eWhat makes it a STEEL\u003c\/p\u003e\n    \u003ch2\u003eWhat the STEEL Mini 4 is built around\u003c\/h2\u003e\n    \u003cp class=\"hsteelmini4-lead\"\u003eThe STEEL wraps its stone in a stainless steel enclosure. HUUM describes it as a sleek design with small safety distances, and the manual's figures bear that out.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-block\"\u003e\n        \u003ch3\u003eA lot of stone for the size\u003c\/h3\u003e\n\u003cp\u003eIt holds about 132 lb (60 kg). HUUM describes the STEEL as holding a large amount of stone for gentle and long lasting steam.\u003c\/p\u003e\n\u003ch3\u003eOn the wall\u003c\/h3\u003e\n\u003cp\u003eThe heater is 12.2 in W x 6.3 in D x 38.4 in H. The Mini 4 hangs on the wall on a special bracket.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cfigure\u003e\u003cdiv class=\"hsteelmini4-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-mini-4-studio.jpg?v=1790068921\u0026amp;width=1200\" alt=\"HUUM STEEL Mini wall mounted electric sauna heater filled with stones\" width=\"2048\" height=\"2048\" loading=\"eager\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe HUUM STEEL Mini 4.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003ch3\u003eWhat the STEEL Mini 4 gives up\u003c\/h3\u003e\n    \u003cp\u003eElectrically it matches the \u003ca href=\"\/products\/huum-cliff-mini-4-electric-sauna-heater\"\u003eCLIFF Mini 4\u003c\/a\u003e: 14.58 amps at 240 volts, with HUUM's manual calling for a 20 amp breaker and 12 AWG cable. It holds about 132 pounds of stone, 4 boxes. Beyond small differences in width and clearance, the choice between the two Minis is mostly the look: the STEEL wraps its stone in a stainless steel enclosure.\u003c\/p\u003e\n\u003cp\u003eWhat it gives up is the accessory range. HUUM lists its STEEL safety rail, reflector and the CLIFF and STEEL embedding flange for the 6, 9 and 11, not the Mini 4, so a guard around the Mini is something your builder makes. On 208 volts it makes 2.85 kW for 106 to 159 cubic feet.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4-tinted\" id=\"parts\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n    \u003ch2\u003eWhat a working STEEL Mini 4 takes, beyond the heater\u003c\/h2\u003e\n    \u003cp class=\"hsteelmini4-lead\"\u003eA sauna heater is several purchases, and the others are easy to miss. Nothing here is padding: the heater will not run without them.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-tw\"\u003e\u003ctable class=\"hsteelmini4-spec\"\u003e\n      \u003ccaption\u003eRequired to operate\u003c\/caption\u003e\n      \u003ctr class=\"hsteelmini4-hl\"\u003e\n\u003cth\u003eThe heater\u003c\/th\u003e\n\u003ctd\u003eThis page.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eA certified control\u003c\/th\u003e\n\u003ctd\u003eThe control unit goes outside the hot room. HUUM's matched control is the UKU, and it is the controller the heater was certified with: the \u003ca href=\"\/products\/huum-uku-local-sauna-heater-control\"\u003eHUUM UKU Local control\u003c\/a\u003e or the \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU Wi-Fi control\u003c\/a\u003e.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \n      \u003ctr\u003e\n\u003cth\u003e4 boxes of stone\u003c\/th\u003e\n\u003ctd\u003eAbout 132 lb (60 kg), 1.2 to 1.9 inches (3 to 5 cm). \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eHUUM olivine diabase sauna stones\u003c\/a\u003e come in 33 pound boxes.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA guard is a code item, not an upsell\u003c\/h3\u003e\n    \u003cp\u003eThe International Residential Code asks for sauna heaters to be protected from accidental contact by a guard made of a material with low thermal conductivity, such as wood, without blocking the heat. HUUM makes no rail for the Mini 4, so the guard is built on site. HUUM's manual recommends a material with low heat capacity and poor thermal conductivity. HUUM adds that when the guard is a flammable material such as wood, the heater's minimum safety distances still have to be kept to it. Check what your local code has adopted.\u003c\/p\u003e\n    \n    \u003cdiv class=\"hsteelmini4-warn\"\u003e\u003cp\u003eBuying the heater, the control and the stone together settles the order in one go: our \u003ca href=\"\/products\/huum-steel-mini-4-sauna-heater-package\"\u003eHUUM STEEL Mini 4 sauna heater package\u003c\/a\u003e is exactly that, priced at the parts added together. Or call and we will price the heater, control and stone together.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"electrical\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eElectrical\u003c\/p\u003e\n    \u003ch2\u003eThe breaker and wire size the HUUM STEEL Mini 4 needs\u003c\/h2\u003e\n    \u003cp class=\"hsteelmini4-lead\"\u003eSettle this before you buy, because it is the line item that surprises people. The heater is hardwired by a licensed electrician.\u003c\/p\u003e\n    \u003cp\u003eThe figures below are HUUM's, from its US manual. They are the manufacturer's minimum, not a design for your house: sauna heating is a continuous load, so the National Electrical Code can require a larger breaker and heavier conductors than the manual's figure, and local amendments differ. Your electrician sizes the circuit.\u003c\/p\u003e\n    \n    \u003cdiv class=\"hsteelmini4-tw\"\u003e\u003ctable class=\"hsteelmini4-ladder hsteelmini4-rooms\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003cth\u003eWhat HUUM specifies\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hsteelmini4-on\"\u003e\n\u003ctd class=\"hsteelmini4-kw\"\u003e240 V\u003cspan class=\"hsteelmini4-tag\"\u003eMost homes\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e4 kW, 14.58 A, 20 A breaker, 12 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd class=\"hsteelmini4-kw\"\u003e208 V\u003c\/td\u003e\n\u003ctd\u003e2.85 kW, 12.5 A, 20 A breaker, 12 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e106 to 159 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhat the manual requires\u003c\/h3\u003e\n    \u003cp\u003eThe supply cable has to meet UL 62 in the United States or CSA 49 in Canada, and a means of disconnecting all poles, a circuit breaker, goes on the power circuit before the control. Cable with non heat resistant PVC insulation is not allowed, and the junction box must be waterproof and within 20 inches (50 cm) of the floor. HUUM's STEEL manual says any certified control panel may be used, and that the heater may be used only with a control unit that has a timer function.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM recommends connecting the heater without a GFCI breaker.\u003c\/b\u003e Its manual says it is recommended to connect the unit to the mains without one. Whether you can follow that depends on where the sauna goes and which edition of the electrical code your area has adopted: an outdoor sauna at a home may fall inside the Code's ground fault requirement for outdoor outlets at these ratings, depending on the edition adopted and how your inspector reads it, while an indoor hardwired heater usually is not caught. Where the manual and the adopted code disagree, the code and your inspector decide.\u003c\/p\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhy it is listed, and why that matters\u003c\/h3\u003e\n    \u003cp\u003eListed, but by SGS rather than UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and its certificate SGSNA\/20\/SUW\/00067X covers the STEEL Mini 4 for the United States and Canada. SGS records conditions against that listing, and they are set out in full in the listing section above.\u003c\/p\u003e\n  \u003ch3\u003eWhy this page quotes two voltages\u003c\/h3\u003e\n\u003cp\u003eThere is nothing to pick here, and nothing on this page selects it. Almost every US home is supplied at 240 volts, while many commercial buildings and some apartment blocks are supplied at 208. It is the same heater either way, wired the same way: on 208 volts it draws less and makes less heat, so HUUM publishes a separate output and a smaller room range for it, which is why the rows under the Add to Cart button and the table below both give two. Your electrician reads the panel and tells you which row applies. Either way it is hardwired into the circuit, not plugged into an outlet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4-tinted\" id=\"install\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eClearances\u003c\/p\u003e\n    \u003ch2\u003eWhere the HUUM STEEL Mini 4 can go\u003c\/h2\u003e\n    \u003cp class=\"hsteelmini4-lead\"\u003eClearances are set per model and generally grow with output. These are this model's figures from HUUM's manual.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-tw\"\u003e\u003ctable class=\"hsteelmini4-spec\"\u003e\n      \u003ccaption\u003eMinimum distances, STEEL Mini 4\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eTo the wall beside the heater\u003c\/th\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e16.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAbove the heater, to the ceiling\u003c\/th\u003e\n\u003ctd\u003e47.3 in (1200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e12.2 in W x 6.3 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e32.0 lb without stone\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eWall mounted with a special bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eThe Mini 4 is attached to the wall with a special bracket. Plan the wall reinforcement and cable run before the lining boards go on.\u003c\/p\u003e\n    \u003cp\u003eThe room itself has to be built for a sauna, with an insulated shell, a reflective vapor barrier and supply and exhaust vents. Our \u003ca href=\"\/collections\/traditional-saunas\"\u003etraditional sauna rooms\u003c\/a\u003e arrive built that way.\u003c\/p\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hsteelmini4-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-mini-4-in_sauna.jpg?width=1200\" alt=\"HUUM STEEL Mini in the corner of a wood sauna\" width=\"2048\" height=\"1365\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eIn a finished sauna, with the clearances this page lists.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"stones\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eStone\u003c\/p\u003e\n    \u003ch2\u003eHow much stone the STEEL Mini 4 takes, and how to lay it\u003c\/h2\u003e\n    \u003cp class=\"hsteelmini4-lead\"\u003eThe stone is not a finishing touch. It is the thermal mass that turns 4 kW into steam, and the heater may not be switched on without it.\u003c\/p\u003e\n    \u003cp\u003eThis heater holds \u003cstrong\u003eabout 132 lb (60 kg)\u003c\/strong\u003e, which is \u003cstrong\u003e4 boxes\u003c\/strong\u003e of HUUM stone. HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across and supplies olivine diabase in 33 pound boxes.\u003c\/p\u003e\n    \u003ch3\u003eLaying it\u003c\/h3\u003e\n    \u003cp\u003eWash the stone first. Stack it loosely between the elements: HUUM's manual warns that stone packed too close makes the elements overheat, which shortens their life and slows the heating. The stone on the outer face goes close together, so no element is visible. HUUM recommends having a specialist lay the stone, and allows ceramic stones only at the user's own responsibility.\u003c\/p\u003e\n\u003cdiv class=\"hsteelmini4-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's manual requires the stone to hide the elements completely, and warns that a sparsely filled stone container is a fire hazard.\u003c\/b\u003e\u003c\/p\u003e\u003c\/div\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hsteelmini4-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-mini-4-top.jpg?width=1200\" alt=\"Top of the HUUM STEEL Mini with its stones\" width=\"1316\" height=\"1316\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eLooking down into the stone bed.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4-tinted\" id=\"costs\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eRunning cost\u003c\/p\u003e\n    \u003ch2\u003eWhat the STEEL Mini 4 costs to run\u003c\/h2\u003e\n    \u003cp class=\"hsteelmini4-lead\"\u003eA sauna heater draws its full rated power while it heats, then cycles on the thermostat to hold temperature. That makes the ceiling easy to calculate and the real figure lower.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-tw\"\u003e\u003ctable class=\"hsteelmini4-spec\"\u003e\n      \u003ccaption\u003eAt the US average residential price of 18.3 cents a kilowatt hour (EIA, June 2026)\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eFull output, one hour\u003c\/th\u003e\n\u003ctd\u003e4 kW x 0.183 = about 0.73 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree hours at full draw, heat up and a session\u003c\/th\u003e\n\u003ctd\u003eabout 2.20 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree of those a week\u003c\/th\u003e\n\u003ctd\u003eabout 7 dollars a week\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eThose are ceilings, not averages: once the room is at temperature the thermostat cycles the elements, so the real bill lands under these ceilings. Your own rate is on your utility bill and varies widely by state.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-warn\"\u003e\u003cp\u003e\u003cb\u003eInsulation controls this number, not the heater.\u003c\/b\u003e HUUM's manuals call for an insulated room so the heater can run at its regular output.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"crate\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n    \u003ch2\u003eIn the STEEL Mini 4 carton\u003c\/h2\u003e\n    \u003cdiv class=\"hsteelmini4-pairup\"\u003e\n      \u003cdiv\u003e\n        \u003cul class=\"hsteelmini4-chk\"\u003e\n\u003cli\u003eElectric heater\u003c\/li\u003e\n\u003cli\u003e4 adjustable legs\u003c\/li\u003e\n\u003cli\u003eInstallation and operation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003ch3\u003eNot included\u003c\/h3\u003e\n        \u003cp\u003eThe control, the stone, and the electrical work. The control and 4 boxes of stone are required to operate the heater.\u003c\/p\u003e\n        \u003ch3\u003eLead time\u003c\/h3\u003e\n        \u003cp\u003eDelivery estimates are shown on this page and at checkout. If you need a date before you commit, call us and we will confirm the current position with the distributor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4-tinted\" id=\"specs\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eReference\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL Mini 4 specifications\u003c\/h2\u003e\n    \u003cdetails class=\"hsteelmini4-more\" open\u003e\n      \u003csummary\u003eFull specification tables\u003c\/summary\u003e\n      \u003cdiv class=\"hsteelmini4-tw\"\u003e\u003ctable class=\"hsteelmini4-spec\"\u003e\n\u003ccaption\u003eFrom the STEEL User Manual USA v9 (November 2025), Tables 1 to 3\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater output\u003c\/th\u003e\n\u003ctd\u003e4 kW at 240 V, 2.85 kW at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom volume\u003c\/th\u003e\n\u003ctd\u003e106 to 177 adjusted cu. ft. at 240 V, 106 to 159 cu. ft. at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum room height\u003c\/th\u003e\n\u003ctd\u003e86.6 in (2200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated current\u003c\/th\u003e\n\u003ctd\u003e14.58 A at 240 V, 12.5 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCircuit breaker\u003c\/th\u003e\n\u003ctd\u003e20 A at 240 V, 20 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum supply cable\u003c\/th\u003e\n\u003ctd\u003e12 AWG at 240 V, 12 AWG at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone capacity\u003c\/th\u003e\n\u003ctd\u003eAbout 132 lb (60 kg), 4 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone size\u003c\/th\u003e\n\u003ctd\u003e1.2 to 1.9 in (3 to 5 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e12.2 in W x 6.3 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the wall beside it\u003c\/th\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e16.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance above the heater\u003c\/th\u003e\n\u003ctd\u003e47.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eWall mounted with a special bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eSeparate certified control required, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n      \u003cdiv class=\"hsteelmini4-tw\"\u003e\u003ctable class=\"hsteelmini4-spec\"\u003e\n\u003ccaption\u003ePart number, certification and warranty\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eH1007012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e32.0 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003eSingle phase, 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eSGS Listed for North America (SGSNA\/20\/SUW\/00067X)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003eHUUM limited warranty, 3 years for private use and 1 year for commercial use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"compare\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eThe range\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL Mini 4 against the rest of the STEEL range\u003c\/h2\u003e\n    \u003cp class=\"hsteelmini4-lead\"\u003eEvery figure below is HUUM's own, from its US manual, and the breaker column is the manufacturer's minimum rather than a design for your house.\u003c\/p\u003e\n    \u003cp\u003eScroll the table sideways to see every model.\u003c\/p\u003e\n    \u003cdiv class=\"hsteelmini4-tw hsteelmini4-tw--scroll\"\u003e\u003ctable class=\"hsteelmini4-cmp\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth class=\"hsteelmini4-me\"\u003e\n\u003cspan class=\"hsteelmini4-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteelmini4-cmp-m\"\u003eSTEEL Mini 4\u003c\/span\u003e\u003cspan class=\"hsteelmini4-cmp-here\"\u003eYou are here\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-6-electric-sauna-heater\"\u003e\u003cspan class=\"hsteelmini4-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteelmini4-cmp-m\"\u003eSTEEL 6\u003c\/span\u003e\u003cspan class=\"hsteelmini4-cmp-here\"\u003e6 kW, 177 to 318 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-9-electric-sauna-heater\"\u003e\u003cspan class=\"hsteelmini4-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteelmini4-cmp-m\"\u003eSTEEL 9\u003c\/span\u003e\u003cspan class=\"hsteelmini4-cmp-here\"\u003e9 kW, 283 to 460 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-11-electric-sauna-heater\"\u003e\u003cspan class=\"hsteelmini4-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteelmini4-cmp-m\"\u003eSTEEL 11\u003c\/span\u003e\u003cspan class=\"hsteelmini4-cmp-here\"\u003e11 kW, 354 to 566 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput at 240 V\u003c\/td\u003e\n\u003ctd class=\"hsteelmini4-me\"\u003e4 kW\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated room\u003c\/td\u003e\n\u003ctd class=\"hsteelmini4-me\"\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent\u003c\/td\u003e\n\u003ctd class=\"hsteelmini4-me\"\u003e14.58 A\u003c\/td\u003e\n\u003ctd\u003e25 A\u003c\/td\u003e\n\u003ctd\u003e37.5 A\u003c\/td\u003e\n\u003ctd\u003e43.75 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaker\u003c\/td\u003e\n\u003ctd class=\"hsteelmini4-me\"\u003e20 A\u003c\/td\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum cable\u003c\/td\u003e\n\u003ctd class=\"hsteelmini4-me\"\u003e12 AWG\u003c\/td\u003e\n\u003ctd\u003e10 AWG\u003c\/td\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTo the wall beside it\u003c\/td\u003e\n\u003ctd class=\"hsteelmini4-me\"\u003e2.0 in\u003c\/td\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone\u003c\/td\u003e\n\u003ctd class=\"hsteelmini4-me\"\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhen a STEEL is the wrong heater\u003c\/h3\u003e\n    \u003cp\u003eThe STEEL tops out at 11 kW and 566 cubic feet. If you want the stone on show, the CLIFF carries the same outputs in a slimmer 10.6 inch column. For a bigger room, a HIVE goes to 18 kW.\u003c\/p\u003e\n    \u003cp\u003eCompare the whole range on our \u003ca href=\"\/collections\/electric-sauna-heaters\"\u003eelectric sauna heaters\u003c\/a\u003e page, browse every \u003ca href=\"\/collections\/sauna-heaters\"\u003esauna heater\u003c\/a\u003e we carry, or see every model in our \u003ca href=\"\/collections\/huum\"\u003eHUUM sauna heaters\u003c\/a\u003e collection.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\"\u003e\n  \u003cdiv class=\"hsteelmini4-c\"\u003e\n    \u003cp class=\"hsteelmini4-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL Mini 4 questions buyers ask before ordering\u003c\/h2\u003e\n    \u003cdiv class=\"hsteelmini4-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat size sauna will the HUUM STEEL Mini 4 heat?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003eHUUM rates it for 106 to 177 cubic feet on 240 volts, or 106 to 159 cubic feet on 208 volts. Measure length by width by height in feet, then add 3.3 cubic feet for every square foot of uninsulated glass, brick or tile wall, and size from that number.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL Mini 4 come with a control?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003eNo. Every HUUM electric heater needs a separate certified control, bought separately, and the control unit goes outside the hot room. HUUM's matched control is the UKU, the controller this heater was certified with, in Local or Wi-Fi form.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many boxes of stone does the HUUM STEEL Mini 4 need?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003e4 boxes. The heater holds about 132 lb (60 kg) and HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across. HUUM's own stone is olivine diabase in 33 pound boxes. The heater may not be run before it is properly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat breaker and wire does the HUUM STEEL Mini 4 need?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003eOn 240 volts it draws 14.58 A and HUUM specifies a 20 A breaker with 12 AWG cable. On 208 volts it is 12.5 A, a 20 A breaker and 12 AWG. The cable must meet UL 62 in the United States or CSA 49 in Canada, and your electrician sizes the install to the National Electrical Code and to local amendments.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the HUUM STEEL Mini 4 UL listed?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003eIt is listed by SGS, not by UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and it lists the STEEL Mini 4 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install the HUUM STEEL Mini 4 myself?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003eNot if you want the warranty. HUUM's warranty requires the heater to be installed and connected by a licensed electrician, with proof presented to HUUM, and HUUM recommends a specialist lays the stone. The heater is hardwired and the manual forbids cable with non heat resistant PVC insulation. Keep the electrician's invoice.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL Mini 4 need a GFCI breaker?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003eHUUM's manual says it is recommended to connect the heater without one. Whether you can follow that depends on where the sauna goes and which edition of the electrical code your area has adopted. An outdoor sauna at a home may fall inside the Code's ground fault requirement for outdoor outlets at these ratings, depending on the edition adopted and how your inspector reads it, while an indoor hardwired heater usually is not caught. Where the manual and the adopted code disagree, the code and your inspector decide.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan the HUUM STEEL Mini 4 be set into the bench?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003eHUUM describes bench embedding and lists its embedding flange for the full size 6, 9 and 11, not the Mini 4, which hangs on the wall on its own bracket.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL Mini 4 need a UKU extension box?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003eNo. The extension box is for HUUM heaters above 11 kW, which means the HIVE 12, 15 and 18. This heater runs from the UKU's main module on its own.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the HUUM STEEL Mini 4?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4-fb\"\u003e\u003cp\u003eHUUM warrants its electric heaters, wood stoves and controls for 3 years in a private sauna and 1 year in a commercial one, from the date of purchase, with spare parts covered for 1 year. Heating elements, controller sensors, stones, HUUM accessories, and wood stove door glass and ash grates are excluded, and so is damage from unsuitable stones or from a heater sized wrong for the room. HUUM counts it as commercial use if a registered business uses the product commercially, if a private user uses it commercially, or if a private user runs it for more than 1,500 hours in a 12 month period. For the warranty to apply, the heater has to be installed and connected by a licensed electrician with proof presented to HUUM, installed and operated to HUUM's manual and to local building, electrical and fire codes, and installed complete. Damage found on delivery has to be reported to us within 48 hours of delivery, with photographs and before the heater is installed; that is our window, and because it is shorter than HUUM's 7 days, it is the one that applies to the HUUM warranty. Any defect has to be reported within 30 days of discovering it. Because elements are excluded, we stock them as \u003ca href=\"\/products\/huum-cliff-steel-heating-element\"\u003ereplacement parts\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsteelmini4-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsteelmini4-c\"\u003e\n\u003cp class=\"hsteelmini4-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the STEEL Mini 4 is the right output?\u003c\/h2\u003e\n\u003cp\u003eTell us the room size and how the walls are built, and we will size it with you before you order. The stone and the UKU control sit on this page, above Add to Cart, so the whole order goes in together. If you would rather take it in one line, we build the same parts as a \u003ca href=\"\/collections\/sauna-heater-packages\"\u003esauna heater package\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"hsteelmini4-who\"\u003e\n\u003cimg class=\"hsteelmini4-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsteelmini4-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsteelmini4-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"Default Title","offer_id":53514377560431,"sku":"H1007012","price":1576.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-mini-4-studio.jpg?v=1790068921"},{"product_id":"huum-steel-6-electric-sauna-heater","title":"HUUM STEEL 6 Electric Sauna Heater, 6 kW","description":"\u003cstyle\u003e.hsteel6{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--body);line-height:1.65;letter-spacing:normal;-webkit-font-smoothing:antialiased;background:#fff}.hsteel6 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.hsteel6-more + p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hsteel6\"\u003e\n\u003csection id=\"overview\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cdetails class=\"hsteel6-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hsteel6-ct\"\u003e9 sections\u003c\/span\u003e\u003c\/summary\u003e\u003col\u003e\n\u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#video\"\u003eVideo\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fit\"\u003eWill it fit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#parts\"\u003eWhat you need\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#electrical\"\u003eBreaker and wire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#stones\"\u003eStone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#compare\"\u003eHow it compares\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eQuestions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#order\"\u003eOrder\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/details\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eTwice the stone of the CLIFF 6\u003c\/p\u003e\n    \u003ch2\u003eThe HUUM STEEL 6 is a 6 kW floor standing electric sauna heater for rooms of 177 to 318 cubic feet\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eSix kilowatts for rooms of 177 to 318 cubic feet, in a stainless steel column 12.6 inches square that holds about 330 pounds of stone.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-stat3\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteel6-lbl\"\u003eThe room\u003c\/p\u003e\n        \u003cp class=\"hsteel6-big\"\u003e177 to 318 cu. ft.\u003c\/p\u003e\n        \u003cp\u003eLength by width by height, in feet. Add 3.3 cubic feet for every square foot of uninsulated glass, tile or brick wall, then size from the adjusted number.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteel6-lbl\"\u003eRated current\u003c\/p\u003e\n        \u003cp class=\"hsteel6-big\"\u003e25 A at 240 V\u003c\/p\u003e\n        \u003cp\u003eHUUM's manual calls for a 30 A breaker and 10 AWG cable. It is hardwired by a licensed electrician, who sizes the circuit to the National Electrical Code. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteel6-lbl\"\u003eThe rest of the order\u003c\/p\u003e\n        \u003cp class=\"hsteel6-big\"\u003eControl and 10 boxes of stone\u003c\/p\u003e\n        \u003cp\u003eNeither is in the carton, and neither needs a second order: open \u003cstrong\u003eComplete your heater\u003c\/strong\u003e just above the Add to Cart button and both travel on this one. A \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU control\u003c\/a\u003e runs the heater from outside the room, and this heater holds about 330 lb (150 kg) of \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003esauna stone\u003c\/a\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection id=\"video\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eWatch\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-vidrow\"\u003e\n    \u003cdiv class=\"hsteel6-vid\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/_XxhQ8VFWJk\" title=\"Building it into the bench, HUUM\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n    \u003cdiv class=\"hsteel6-vidbody\"\u003e\n    \u003ch2\u003eBuilding it into the bench\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eThe optional embedding flange, from bench cut-out to finished edge.\u003c\/p\u003e\n    \u003cp\u003eHUUM filmed this itself. Its heater installation films are made for Europe and show European wiring, so we do not run them here: the sauna side of the job is the same, the electrical side is not.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003c\/section\u003e\n\n\n\u003csection class=\"hsteel6-tinted\" id=\"fit\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eSizing\u003c\/p\u003e\n    \u003ch2\u003eWill the HUUM STEEL 6 heat your sauna?\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eSauna heaters are sized on room volume, not floor area. Measure the room in feet and multiply length by width by height, then pick the heater whose published range contains that figure.\u003c\/p\u003e\n    \u003cp\u003eHUUM rates the STEEL 6 for \u003cstrong\u003e177 to 318 cubic feet\u003c\/strong\u003e on a 240 volt supply, and its manual warns that the warranty does not apply if the heater and room are dimensioned incorrectly.\u003c\/p\u003e\n    \u003cp\u003eCold surfaces change the answer. HUUM's manual says to add \u003cstrong\u003e3.3 cubic feet of volume for every square foot\u003c\/strong\u003e of uninsulated brick, tile or glass wall in the room. It does not say whether a glass door counts, so counting it is the cautious choice.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-tw\"\u003e\u003ctable class=\"hsteel6-ladder hsteel6-out\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6-kw\"\u003eSTEEL Mini 4\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft. at 240 V, 106 to 159 at 208 V\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteel6-on\"\u003e\n\u003ctd class=\"hsteel6-kw\"\u003eSTEEL 6 \u003cspan class=\"hsteel6-tag\"\u003eThis heater\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft. at 240 V, 142 to 248 at 208 V\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6-kw\"\u003eSTEEL 9\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft. at 240 V, 212 to 354 at 208 V\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6-kw\"\u003eSTEEL 11\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft. at 240 V, 265 to 424 at 208 V\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA worked example for the STEEL 6\u003c\/h3\u003e\n    \u003cp\u003eTake a room 7 feet by 6 feet with a 7.5 foot ceiling: 42 square feet of floor and 315 cubic feet, inside this heater's 177 to 318. Count a full glass door, take 13 square feet as an example and measure your own, and at 3.3 cubic feet a square foot the room behaves like about 358 cubic feet, which is past the STEEL 6 and into STEEL 9 territory.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's STEEL manual gives a minimum sauna room height of 86.6 inches (2200 mm)\u003c\/b\u003e, with a regular height of 86.6 to 91 inches, and advises bringing a taller ceiling down into that range to reduce the volume.\u003c\/p\u003e\u003c\/div\u003e\n    \u003cp\u003eNot sure which way a borderline room goes? Our \u003ca href=\"\/pages\/find-your-sauna-heater\"\u003esauna heater finder\u003c\/a\u003e walks the same arithmetic, the \u003ca href=\"\/pages\/sauna-heater-buyers-guide\"\u003esauna heater buyers guide\u003c\/a\u003e explains what the numbers mean, or call and we will do it with you.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"design\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eWhat makes it a STEEL\u003c\/p\u003e\n    \u003ch2\u003eWhat the STEEL 6 is built around\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eThe STEEL wraps its stone in a stainless steel enclosure. HUUM describes it as a sleek design with small safety distances, and the manual's figures bear that out.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-block\"\u003e\n        \u003ch3\u003eA lot of stone for the size\u003c\/h3\u003e\n\u003cp\u003eIt holds about 330 lb (150 kg). HUUM describes the STEEL as holding a large amount of stone for gentle and long lasting steam.\u003c\/p\u003e\n\u003ch3\u003eOn the floor\u003c\/h3\u003e\n\u003cp\u003eThe heater is 12.6 in W x 12.6 in D x 38.4 in H. The 6, 9 and 11 stand on the floor on the adjustable legs in the carton and are anchored to the floor with brackets, fixed with a suitable screw, preferably at least 6 x 40 mm, according to HUUM's manual.\u003c\/p\u003e\n\u003ch3\u003eIt can be sunk into the bench\u003c\/h3\u003e\n\u003cp\u003eHUUM says the STEEL can be embedded into the sauna bench, with at least 21.7 inches (550 mm) of the heater above the bench surface. The \u003ca href=\"\/products\/huum-cliff-steel-embedding-flange\"\u003eCLIFF and STEEL embedding flange\u003c\/a\u003e covers the cut edge.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cfigure\u003e\u003cdiv class=\"hsteel6-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-6-studio.jpg?v=1790068935\u0026amp;width=1200\" alt=\"HUUM STEEL floor standing electric sauna heater filled with stones\" width=\"2048\" height=\"2048\" loading=\"eager\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe HUUM STEEL 6.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003ch3\u003eWhy the STEEL 6 carries so much stone\u003c\/h3\u003e\n    \u003cp\u003eThe STEEL 6 has the same output, room range and circuit as the CLIFF 6, and holds twice the stone: about 330 pounds, 10 boxes, against 165. HUUM describes the STEEL as giving gentle, long lasting steam, and the extra stone is where that comes from.\u003c\/p\u003e\n\u003cp\u003eIt also keeps its clearances small. HUUM's manual asks for 2 inches to the wall beside it and 16.5 inches wall to wall across it.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6-tinted\" id=\"parts\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n    \u003ch2\u003eWhat a working STEEL 6 takes, beyond the heater\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eA sauna heater is several purchases, and the others are easy to miss. Nothing here is padding: the heater will not run without them.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-tw\"\u003e\u003ctable class=\"hsteel6-spec\"\u003e\n      \u003ccaption\u003eRequired to operate\u003c\/caption\u003e\n      \u003ctr class=\"hsteel6-hl\"\u003e\n\u003cth\u003eThe heater\u003c\/th\u003e\n\u003ctd\u003eThis page.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eA certified control\u003c\/th\u003e\n\u003ctd\u003eThe control unit goes outside the hot room. HUUM's matched control is the UKU, and it is the controller the heater was certified with: the \u003ca href=\"\/products\/huum-uku-local-sauna-heater-control\"\u003eHUUM UKU Local control\u003c\/a\u003e or the \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU Wi-Fi control\u003c\/a\u003e.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \n      \u003ctr\u003e\n\u003cth\u003e10 boxes of stone\u003c\/th\u003e\n\u003ctd\u003eAbout 330 lb (150 kg), 1.2 to 1.9 inches (3 to 5 cm). \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eHUUM olivine diabase sauna stones\u003c\/a\u003e come in 33 pound boxes.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA guard is a code item, not an upsell\u003c\/h3\u003e\n    \u003cp\u003eThe International Residential Code asks for sauna heaters to be protected from accidental contact by a guard made of a material with low thermal conductivity, such as wood, without blocking the heat. You can build one or use the \u003ca href=\"\/products\/huum-steel-safety-rail\"\u003eSTEEL safety rail\u003c\/a\u003e HUUM makes for this heater. HUUM adds that when the guard is a flammable material such as wood, the heater's minimum safety distances still have to be kept to it. Check what your local code has adopted.\u003c\/p\u003e\n    \u003ch3\u003eOptional\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/huum-steel-reflector\"\u003ereflector panel\u003c\/a\u003e is the part HUUM makes for a tight space: HUUM states it halves the heater's safety distance to the walls, and the heater manual's own distances still decide the layout until your inspector agrees. The \u003ca href=\"\/products\/huum-cliff-steel-embedding-flange\"\u003eembedding flange\u003c\/a\u003e is only needed if the heater is sunk into a bench.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-warn\"\u003e\u003cp\u003eBuying the heater, the control and the stone together settles the order in one go: our \u003ca href=\"\/products\/huum-steel-6-sauna-heater-package\"\u003eHUUM STEEL 6 sauna heater package\u003c\/a\u003e is exactly that, priced at the parts added together. Or call and we will price the heater, control and stone together.\u003c\/p\u003e\u003c\/div\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hsteel6-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-6-with_rail.jpg?width=1200\" alt=\"HUUM STEEL heater with the HUUM safety rail fitted\" width=\"2048\" height=\"1365\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe heater with the safety rail HUUM lists for it, sold separately.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"electrical\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eElectrical\u003c\/p\u003e\n    \u003ch2\u003eThe breaker and wire size the HUUM STEEL 6 needs\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eSettle this before you buy, because it is the line item that surprises people. The heater is hardwired by a licensed electrician.\u003c\/p\u003e\n    \u003cp\u003eThe figures below are HUUM's, from its US manual. They are the manufacturer's minimum, not a design for your house: sauna heating is a continuous load, so the National Electrical Code can require a larger breaker and heavier conductors than the manual's figure, and local amendments differ. Your electrician sizes the circuit. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n    \n    \u003cdiv class=\"hsteel6-tw\"\u003e\u003ctable class=\"hsteel6-ladder hsteel6-rooms\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003cth\u003eWhat HUUM specifies\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hsteel6-on\"\u003e\n\u003ctd class=\"hsteel6-kw\"\u003e240 V\u003cspan class=\"hsteel6-tag\"\u003eMost homes\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e6 kW, 25 A, 30 A breaker, 10 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd class=\"hsteel6-kw\"\u003e208 V\u003c\/td\u003e\n\u003ctd\u003e4.8 kW, 21.63 A, 30 A breaker, 10 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e142 to 248 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhat the manual requires\u003c\/h3\u003e\n    \u003cp\u003eThe supply cable has to meet UL 62 in the United States or CSA 49 in Canada, and a means of disconnecting all poles, a circuit breaker, goes on the power circuit before the control. Cable with non heat resistant PVC insulation is not allowed, and the junction box must be waterproof and within 20 inches (50 cm) of the floor. HUUM's STEEL manual says any certified control panel may be used, and that the heater may be used only with a control unit that has a timer function.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM recommends connecting the heater without a GFCI breaker.\u003c\/b\u003e Its manual says it is recommended to connect the unit to the mains without one. Whether you can follow that depends on where the sauna goes and which edition of the electrical code your area has adopted: an outdoor sauna at a home may fall inside the Code's ground fault requirement for outdoor outlets at these ratings, depending on the edition adopted and how your inspector reads it, while an indoor hardwired heater usually is not caught. Where the manual and the adopted code disagree, the code and your inspector decide.\u003c\/p\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhy it is listed, and why that matters\u003c\/h3\u003e\n    \u003cp\u003eListed, but by SGS rather than UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and its certificate SGSNA\/20\/SUW\/00067X covers the STEEL 6 for the United States and Canada. SGS records conditions against that listing, and they are set out in full in the listing section above.\u003c\/p\u003e\n  \u003ch3\u003eWhy this page quotes two voltages\u003c\/h3\u003e\n\u003cp\u003eThere is nothing to pick here, and nothing on this page selects it. Almost every US home is supplied at 240 volts, while many commercial buildings and some apartment blocks are supplied at 208. It is the same heater either way, wired the same way: on 208 volts it draws less and makes less heat, so HUUM publishes a separate output and a smaller room range for it, which is why the rows under the Add to Cart button and the table below both give two. Your electrician reads the panel and tells you which row applies. Either way it is hardwired into the circuit, not plugged into an outlet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6-tinted\" id=\"install\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eClearances\u003c\/p\u003e\n    \u003ch2\u003eWhere the HUUM STEEL 6 can go\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eClearances are set per model and generally grow with output. These are this model's figures from HUUM's manual.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-tw\"\u003e\u003ctable class=\"hsteel6-spec\"\u003e\n      \u003ccaption\u003eMinimum distances, STEEL 6\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eTo the wall beside the heater\u003c\/th\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e16.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAbove the heater, to the ceiling\u003c\/th\u003e\n\u003ctd\u003e47.3 in (1200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e12.6 in W x 12.6 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e33.0 lb without stone\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eHUUM's manual has the 6, 9 and 11 anchored to the floor with brackets on the heater legs, fixed with a suitable screw, preferably at least 6 x 40 mm. SGS lists the CLIFF and STEEL on the condition that they are anchored.\u003c\/p\u003e\n    \u003cp\u003eThe room itself has to be built for a sauna, with an insulated shell, a reflective vapor barrier and supply and exhaust vents. Our \u003ca href=\"\/collections\/traditional-saunas\"\u003etraditional sauna rooms\u003c\/a\u003e arrive built that way.\u003c\/p\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hsteel6-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-6-in_sauna.jpg?width=1200\" alt=\"HUUM STEEL heater installed in the corner of a sauna\" width=\"1000\" height=\"1000\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eIn a finished sauna, with the clearances this page lists.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"stones\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eStone\u003c\/p\u003e\n    \u003ch2\u003eHow much stone the STEEL 6 takes, and how to lay it\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eThe stone is not a finishing touch. It is the thermal mass that turns 6 kW into steam, and the heater may not be switched on without it.\u003c\/p\u003e\n    \u003cp\u003eThis heater holds \u003cstrong\u003eabout 330 lb (150 kg)\u003c\/strong\u003e, which is \u003cstrong\u003e10 boxes\u003c\/strong\u003e of HUUM stone. HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across and supplies olivine diabase in 33 pound boxes.\u003c\/p\u003e\n    \u003ch3\u003eLaying it\u003c\/h3\u003e\n    \u003cp\u003eWash the stone first. Stack it loosely between the elements: HUUM's manual warns that stone packed too close makes the elements overheat, which shortens their life and slows the heating. The stone on the outer face goes close together, so no element is visible. HUUM recommends having a specialist lay the stone, and allows ceramic stones only at the user's own responsibility.\u003c\/p\u003e\n\u003cdiv class=\"hsteel6-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's manual requires the stone to hide the elements completely, and warns that a sparsely filled stone container is a fire hazard.\u003c\/b\u003e\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6-tinted\" id=\"costs\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eRunning cost\u003c\/p\u003e\n    \u003ch2\u003eWhat the STEEL 6 costs to run\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eA sauna heater draws its full rated power while it heats, then cycles on the thermostat to hold temperature. That makes the ceiling easy to calculate and the real figure lower.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-tw\"\u003e\u003ctable class=\"hsteel6-spec\"\u003e\n      \u003ccaption\u003eAt the US average residential price of 18.3 cents a kilowatt hour (EIA, June 2026)\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eFull output, one hour\u003c\/th\u003e\n\u003ctd\u003e6 kW x 0.183 = about 1.10 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree hours at full draw, heat up and a session\u003c\/th\u003e\n\u003ctd\u003eabout 3.29 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree of those a week\u003c\/th\u003e\n\u003ctd\u003eabout 10 dollars a week\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eThose are ceilings, not averages: once the room is at temperature the thermostat cycles the elements, so the real bill lands under these ceilings. Your own rate is on your utility bill and varies widely by state.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-warn\"\u003e\u003cp\u003e\u003cb\u003eInsulation controls this number, not the heater.\u003c\/b\u003e HUUM's manuals call for an insulated room so the heater can run at its regular output.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"crate\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n    \u003ch2\u003eIn the STEEL 6 carton\u003c\/h2\u003e\n    \u003cdiv class=\"hsteel6-pairup\"\u003e\n      \u003cdiv\u003e\n        \u003cul class=\"hsteel6-chk\"\u003e\n\u003cli\u003eElectric heater\u003c\/li\u003e\n\u003cli\u003e4 adjustable legs\u003c\/li\u003e\n\u003cli\u003eInstallation and operation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003ch3\u003eNot included\u003c\/h3\u003e\n        \u003cp\u003eThe control, the stone, and the electrical work. The control and 10 boxes of stone are required to operate the heater. The rail, reflector and embedding flange are optional.\u003c\/p\u003e\n        \u003ch3\u003eLead time\u003c\/h3\u003e\n        \u003cp\u003eDelivery estimates are shown on this page and at checkout. If you need a date before you commit, call us and we will confirm the current position with the distributor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6-tinted\" id=\"specs\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eReference\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL 6 specifications\u003c\/h2\u003e\n    \u003cdetails class=\"hsteel6-more\" open\u003e\n      \u003csummary\u003eFull specification tables\u003c\/summary\u003e\n      \u003cdiv class=\"hsteel6-tw\"\u003e\u003ctable class=\"hsteel6-spec\"\u003e\n\u003ccaption\u003eFrom the STEEL User Manual USA v9 (November 2025), Tables 1 to 3\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater output\u003c\/th\u003e\n\u003ctd\u003e6 kW at 240 V, 4.8 kW at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom volume\u003c\/th\u003e\n\u003ctd\u003e177 to 318 adjusted cu. ft. at 240 V, 142 to 248 cu. ft. at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum room height\u003c\/th\u003e\n\u003ctd\u003e86.6 in (2200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated current\u003c\/th\u003e\n\u003ctd\u003e25 A at 240 V, 21.63 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCircuit breaker\u003c\/th\u003e\n\u003ctd\u003e30 A at 240 V, 30 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum supply cable\u003c\/th\u003e\n\u003ctd\u003e10 AWG at 240 V, 10 AWG at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone capacity\u003c\/th\u003e\n\u003ctd\u003eAbout 330 lb (150 kg), 10 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone size\u003c\/th\u003e\n\u003ctd\u003e1.2 to 1.9 in (3 to 5 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e12.6 in W x 12.6 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the wall beside it\u003c\/th\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e16.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance above the heater\u003c\/th\u003e\n\u003ctd\u003e47.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eSeparate certified control required, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n      \u003cdiv class=\"hsteel6-tw\"\u003e\u003ctable class=\"hsteel6-spec\"\u003e\n\u003ccaption\u003ePart number, certification and warranty\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eH1006012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e33.0 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003eSingle phase, 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eSGS Listed for North America (SGSNA\/20\/SUW\/00067X)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003eHUUM limited warranty, 3 years for private use and 1 year for commercial use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"compare\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eThe range\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL 6 against the rest of the STEEL range\u003c\/h2\u003e\n    \u003cp class=\"hsteel6-lead\"\u003eEvery figure below is HUUM's own, from its US manual, and the breaker column is the manufacturer's minimum rather than a design for your house.\u003c\/p\u003e\n    \u003cp\u003eScroll the table sideways to see every model.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel6-tw hsteel6-tw--scroll\"\u003e\u003ctable class=\"hsteel6-cmp\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-mini-4-electric-sauna-heater\"\u003e\u003cspan class=\"hsteel6-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel6-cmp-m\"\u003eSTEEL Mini 4\u003c\/span\u003e\u003cspan class=\"hsteel6-cmp-here\"\u003e4 kW, 106 to 177 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth class=\"hsteel6-me\"\u003e\n\u003cspan class=\"hsteel6-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel6-cmp-m\"\u003eSTEEL 6\u003c\/span\u003e\u003cspan class=\"hsteel6-cmp-here\"\u003eYou are here\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-9-electric-sauna-heater\"\u003e\u003cspan class=\"hsteel6-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel6-cmp-m\"\u003eSTEEL 9\u003c\/span\u003e\u003cspan class=\"hsteel6-cmp-here\"\u003e9 kW, 283 to 460 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-11-electric-sauna-heater\"\u003e\u003cspan class=\"hsteel6-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel6-cmp-m\"\u003eSTEEL 11\u003c\/span\u003e\u003cspan class=\"hsteel6-cmp-here\"\u003e11 kW, 354 to 566 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput at 240 V\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003ctd class=\"hsteel6-me\"\u003e6 kW\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated room\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003ctd class=\"hsteel6-me\"\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent\u003c\/td\u003e\n\u003ctd\u003e14.58 A\u003c\/td\u003e\n\u003ctd class=\"hsteel6-me\"\u003e25 A\u003c\/td\u003e\n\u003ctd\u003e37.5 A\u003c\/td\u003e\n\u003ctd\u003e43.75 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaker\u003c\/td\u003e\n\u003ctd\u003e20 A\u003c\/td\u003e\n\u003ctd class=\"hsteel6-me\"\u003e30 A\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum cable\u003c\/td\u003e\n\u003ctd\u003e12 AWG\u003c\/td\u003e\n\u003ctd class=\"hsteel6-me\"\u003e10 AWG\u003c\/td\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTo the wall beside it\u003c\/td\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003ctd class=\"hsteel6-me\"\u003e2.0 in\u003c\/td\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd class=\"hsteel6-me\"\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhen a STEEL is the wrong heater\u003c\/h3\u003e\n    \u003cp\u003eThe STEEL tops out at 11 kW and 566 cubic feet. If you want the stone on show, the CLIFF carries the same outputs in a slimmer 10.6 inch column. For a bigger room, a HIVE goes to 18 kW.\u003c\/p\u003e\n    \u003cp\u003eCompare the whole range on our \u003ca href=\"\/collections\/electric-sauna-heaters\"\u003eelectric sauna heaters\u003c\/a\u003e page, browse every \u003ca href=\"\/collections\/sauna-heaters\"\u003esauna heater\u003c\/a\u003e we carry, or see every model in our \u003ca href=\"\/collections\/huum\"\u003eHUUM sauna heaters\u003c\/a\u003e collection.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\"\u003e\n  \u003cdiv class=\"hsteel6-c\"\u003e\n    \u003cp class=\"hsteel6-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL 6 questions buyers ask before ordering\u003c\/h2\u003e\n    \u003cdiv class=\"hsteel6-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat size sauna will the HUUM STEEL 6 heat?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003eHUUM rates it for 177 to 318 cubic feet on 240 volts, or 142 to 248 cubic feet on 208 volts. Measure length by width by height in feet, then add 3.3 cubic feet for every square foot of uninsulated glass, brick or tile wall, and size from that number.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL 6 come with a control?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003eNo. Every HUUM electric heater needs a separate certified control, bought separately, and the control unit goes outside the hot room. HUUM's matched control is the UKU, the controller this heater was certified with, in Local or Wi-Fi form.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many boxes of stone does the HUUM STEEL 6 need?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003e10 boxes. The heater holds about 330 lb (150 kg) and HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across. HUUM's own stone is olivine diabase in 33 pound boxes. The heater may not be run before it is properly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat breaker and wire does the HUUM STEEL 6 need?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003eOn 240 volts it draws 25 A and HUUM specifies a 30 A breaker with 10 AWG cable. On 208 volts it is 21.63 A, a 30 A breaker and 10 AWG. The cable must meet UL 62 in the United States or CSA 49 in Canada, and your electrician sizes the install to the National Electrical Code and to local amendments. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the HUUM STEEL 6 UL listed?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003eIt is listed by SGS, not by UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and it lists the STEEL 6 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install the HUUM STEEL 6 myself?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003eNot if you want the warranty. HUUM's warranty requires the heater to be installed and connected by a licensed electrician, with proof presented to HUUM, and HUUM recommends a specialist lays the stone. The heater is hardwired and the manual forbids cable with non heat resistant PVC insulation. Keep the electrician's invoice.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL 6 need a GFCI breaker?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003eHUUM's manual says it is recommended to connect the heater without one. Whether you can follow that depends on where the sauna goes and which edition of the electrical code your area has adopted. An outdoor sauna at a home may fall inside the Code's ground fault requirement for outdoor outlets at these ratings, depending on the edition adopted and how your inspector reads it, while an indoor hardwired heater usually is not caught. Where the manual and the adopted code disagree, the code and your inspector decide.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan the HUUM STEEL 6 be set into the bench?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003eYes, with the embedding flange. HUUM's condition is that at least 21.7 inches (550 mm) of the heater still stands above the bench surface once it is set in; the flange itself only covers the cut edge of the opening.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL 6 need a UKU extension box?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003eNo. The extension box is for HUUM heaters above 11 kW, which means the HIVE 12, 15 and 18. This heater runs from the UKU's main module on its own.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the HUUM STEEL 6?\u003c\/summary\u003e\u003cdiv class=\"hsteel6-fb\"\u003e\u003cp\u003eHUUM warrants its electric heaters, wood stoves and controls for 3 years in a private sauna and 1 year in a commercial one, from the date of purchase, with spare parts covered for 1 year. Heating elements, controller sensors, stones, HUUM accessories, and wood stove door glass and ash grates are excluded, and so is damage from unsuitable stones or from a heater sized wrong for the room. HUUM counts it as commercial use if a registered business uses the product commercially, if a private user uses it commercially, or if a private user runs it for more than 1,500 hours in a 12 month period. For the warranty to apply, the heater has to be installed and connected by a licensed electrician with proof presented to HUUM, installed and operated to HUUM's manual and to local building, electrical and fire codes, and installed complete. Damage found on delivery has to be reported to us within 48 hours of delivery, with photographs and before the heater is installed; that is our window, and because it is shorter than HUUM's 7 days, it is the one that applies to the HUUM warranty. Any defect has to be reported within 30 days of discovering it. Because elements are excluded, we stock them as \u003ca href=\"\/products\/huum-cliff-steel-heating-element\"\u003ereplacement parts\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsteel6-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsteel6-c\"\u003e\n\u003cp class=\"hsteel6-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the STEEL 6 is the right output?\u003c\/h2\u003e\n\u003cp\u003eTell us the room size and how the walls are built, and we will size it with you before you order. The stone and the UKU control sit on this page, above Add to Cart, so the whole order goes in together. If you would rather take it in one line, we build the same parts as a \u003ca href=\"\/collections\/sauna-heater-packages\"\u003esauna heater package\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"hsteel6-who\"\u003e\n\u003cimg class=\"hsteel6-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsteel6-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsteel6-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"Default Title","offer_id":53514381787503,"sku":"H1006012","price":2033.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-6-studio.jpg?v=1790068935"},{"product_id":"huum-steel-9-electric-sauna-heater","title":"HUUM STEEL 9 Electric Sauna Heater, 9 kW","description":"\u003cstyle\u003e.hsteel9{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--body);line-height:1.65;letter-spacing:normal;-webkit-font-smoothing:antialiased;background:#fff}.hsteel9 *{box-sizing:border-box}.hsteel9 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td:last-child{text-align:left;font-size:15.5px;margin-top:8px}}.hsteel9 .hsteel9-hl td,.hsteel9 .hsteel9-hl th,.hsteel9 .hsteel9-ladder tr.hsteel9-on td,.hsteel9 table.hsteel9-cmp td.hsteel9-me{border-bottom-color:var(--edge)}@media screen and (max-width:840px){.hsteel9 table.hsteel9-cmp thead a{min-height:44px;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:2px}}.rte .hsteel9 table th,.rte .hsteel9 table td{padding:11px var(--gut)}.hsteel9 .hsteel9-ladder th:last-child,.hsteel9 .hsteel9-ladder td:last-child{text-align:left;white-space:normal;overflow-wrap:anywhere}.hsteel9 .hsteel9-buy{align-items:start}.hsteel9 .hsteel9-buy li span a{display:inline-block;padding:16px 0;margin:-16px 0}.hsteel9 table.hsteel9-cmp td:first-child{position:sticky;left:0;z-index:1;background:#fff;box-shadow:inset 0 -1px 0 var(--rule),1px 0 0 var(--rule)}.hsteel9 table.hsteel9-cmp thead th:first-child{position:sticky;left:0;z-index:2;background:var(--fill)}@media screen and (max-width:560px){.hsteel9 .hsteel9-ladder td:last-child::before{content:\"Nameplate draw:\\00a0\";font-weight:700;color:var(--ink)}}@media screen and (max-width:480px){.hsteel9 table.hsteel9-spec th,.hsteel9 table.hsteel9-spec td{display:block;width:auto}.hsteel9 table.hsteel9-spec th{border-bottom:0;padding-bottom:0}}.hsteel9 .hsteel9-vid .video-wrapper{position:absolute !important;inset:0;width:100%;height:100%;padding:0 !important;margin:0}.hsteel9 .hsteel9-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.hsteel9 .hsteel9-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.hsteel9 .hsteel9-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.hsteel9 .hsteel9-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.hsteel9 .hsteel9-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}.hsteel9 .hsteel9-close p.hsteel9-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hsteel9 .hsteel9-stat3 a{color:var(--bright)}.hsteel9 .hsteel9-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hsteel9 .hsteel9-cmp thead a .hsteel9-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hsteel9 .hsteel9-ladder.hsteel9-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hsteel9 .hsteel9-ladder.hsteel9-out td:last-child::before{content:\"Output:\\00a0\"}}.hsteel9 .hsteel9-tw + p,.hsteel9 .hsteel9-tw + h3,.hsteel9 .hsteel9-warn + p,.hsteel9 .hsteel9-warn + h3,.hsteel9 .hsteel9-more + p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hsteel9\"\u003e\n\u003csection id=\"overview\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cdetails class=\"hsteel9-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hsteel9-ct\"\u003e9 sections\u003c\/span\u003e\u003c\/summary\u003e\u003col\u003e\n\u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#video\"\u003eVideo\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fit\"\u003eWill it fit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#parts\"\u003eWhat you need\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#electrical\"\u003eBreaker and wire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#stones\"\u003eStone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#compare\"\u003eHow it compares\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eQuestions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#order\"\u003eOrder\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/details\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eNine kilowatts with small clearances\u003c\/p\u003e\n    \u003ch2\u003eThe HUUM STEEL 9 is a 9 kW floor standing electric sauna heater for rooms of 283 to 460 cubic feet\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eThe STEEL 9 heats rooms of 283 to 460 cubic feet and asks for only 3.94 inches to the wall beside it, where the CLIFF 9 of the same output asks for 9.45.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-stat3\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteel9-lbl\"\u003eThe room\u003c\/p\u003e\n        \u003cp class=\"hsteel9-big\"\u003e283 to 460 cu. ft.\u003c\/p\u003e\n        \u003cp\u003eLength by width by height, in feet. Add 3.3 cubic feet for every square foot of uninsulated glass, tile or brick wall, then size from the adjusted number.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteel9-lbl\"\u003eRated current\u003c\/p\u003e\n        \u003cp class=\"hsteel9-big\"\u003e37.5 A at 240 V\u003c\/p\u003e\n        \u003cp\u003eHUUM's manual calls for a 50 A breaker and 8 AWG cable, a step up from the STEEL 6. It is hardwired by a licensed electrician, who sizes the circuit to the National Electrical Code. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteel9-lbl\"\u003eThe rest of the order\u003c\/p\u003e\n        \u003cp class=\"hsteel9-big\"\u003eControl and 10 boxes of stone\u003c\/p\u003e\n        \u003cp\u003eNeither is in the carton, and neither needs a second order: open \u003cstrong\u003eComplete your heater\u003c\/strong\u003e just above the Add to Cart button and both travel on this one. A \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU control\u003c\/a\u003e runs the heater from outside the room, and this heater holds about 330 lb (150 kg) of \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003esauna stone\u003c\/a\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection id=\"video\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eWatch\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-vidrow\"\u003e\n    \u003cdiv class=\"hsteel9-vid\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/_XxhQ8VFWJk\" title=\"Building it into the bench, HUUM\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n    \u003cdiv class=\"hsteel9-vidbody\"\u003e\n    \u003ch2\u003eBuilding it into the bench\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eThe optional embedding flange, from bench cut-out to finished edge.\u003c\/p\u003e\n    \u003cp\u003eHUUM filmed this itself. Its heater installation films are made for Europe and show European wiring, so we do not run them here: the sauna side of the job is the same, the electrical side is not.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003c\/section\u003e\n\n\n\u003csection class=\"hsteel9-tinted\" id=\"fit\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eSizing\u003c\/p\u003e\n    \u003ch2\u003eWill the HUUM STEEL 9 heat your sauna?\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eSauna heaters are sized on room volume, not floor area. Measure the room in feet and multiply length by width by height, then pick the heater whose published range contains that figure.\u003c\/p\u003e\n    \u003cp\u003eHUUM rates the STEEL 9 for \u003cstrong\u003e283 to 460 cubic feet\u003c\/strong\u003e on a 240 volt supply, and its manual warns that the warranty does not apply if the heater and room are dimensioned incorrectly.\u003c\/p\u003e\n    \u003cp\u003eCold surfaces change the answer. HUUM's manual says to add \u003cstrong\u003e3.3 cubic feet of volume for every square foot\u003c\/strong\u003e of uninsulated brick, tile or glass wall in the room. It does not say whether a glass door counts, so counting it is the cautious choice.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-tw\"\u003e\u003ctable class=\"hsteel9-ladder hsteel9-out\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9-kw\"\u003eSTEEL Mini 4\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft. at 240 V, 106 to 159 at 208 V\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9-kw\"\u003eSTEEL 6\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft. at 240 V, 142 to 248 at 208 V\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteel9-on\"\u003e\n\u003ctd class=\"hsteel9-kw\"\u003eSTEEL 9 \u003cspan class=\"hsteel9-tag\"\u003eThis heater\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft. at 240 V, 212 to 354 at 208 V\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9-kw\"\u003eSTEEL 11\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft. at 240 V, 265 to 424 at 208 V\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA worked example for the STEEL 9\u003c\/h3\u003e\n    \u003cp\u003eTake a room 8 feet by 7.5 feet with a 7.5 foot ceiling: 60 square feet of floor and 450 cubic feet, inside this heater's 283 to 460. Count a full glass door, take 13 square feet as an example and measure your own, and at 3.3 cubic feet a square foot the room behaves like about 493 cubic feet, which is past the STEEL 9 and into STEEL 11 territory.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's STEEL manual gives a minimum sauna room height of 86.6 inches (2200 mm)\u003c\/b\u003e, with a regular height of 86.6 to 91 inches, and advises bringing a taller ceiling down into that range to reduce the volume.\u003c\/p\u003e\u003c\/div\u003e\n    \u003cp\u003eNot sure which way a borderline room goes? Our \u003ca href=\"\/pages\/find-your-sauna-heater\"\u003esauna heater finder\u003c\/a\u003e walks the same arithmetic, the \u003ca href=\"\/pages\/sauna-heater-buyers-guide\"\u003esauna heater buyers guide\u003c\/a\u003e explains what the numbers mean, or call and we will do it with you.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"design\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eWhat makes it a STEEL\u003c\/p\u003e\n    \u003ch2\u003eWhat the STEEL 9 is built around\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eThe STEEL wraps its stone in a stainless steel enclosure. HUUM describes it as a sleek design with small safety distances, and the manual's figures bear that out.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-block\"\u003e\n        \u003ch3\u003eA lot of stone for the size\u003c\/h3\u003e\n\u003cp\u003eIt holds about 330 lb (150 kg). HUUM describes the STEEL as holding a large amount of stone for gentle and long lasting steam.\u003c\/p\u003e\n\u003ch3\u003eOn the floor\u003c\/h3\u003e\n\u003cp\u003eThe heater is 12.6 in W x 12.6 in D x 38.4 in H. The 6, 9 and 11 stand on the floor on the adjustable legs in the carton and are anchored to the floor with brackets, fixed with a suitable screw, preferably at least 6 x 40 mm, according to HUUM's manual.\u003c\/p\u003e\n\u003ch3\u003eIt can be sunk into the bench\u003c\/h3\u003e\n\u003cp\u003eHUUM says the STEEL can be embedded into the sauna bench, with at least 21.7 inches (550 mm) of the heater above the bench surface. The \u003ca href=\"\/products\/huum-cliff-steel-embedding-flange\"\u003eCLIFF and STEEL embedding flange\u003c\/a\u003e covers the cut edge.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cfigure\u003e\u003cdiv class=\"hsteel9-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-9-studio.jpg?v=1790068947\u0026amp;width=1200\" alt=\"HUUM STEEL floor standing electric sauna heater filled with stones\" width=\"2048\" height=\"2048\" loading=\"eager\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe HUUM STEEL 9.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003ch3\u003eWhere the STEEL 9 wins on layout\u003c\/h3\u003e\n    \u003cp\u003eHUUM's manual gives 3.94 inches to the side wall and 20.5 inches wall to wall across the heater. In a room where every inch of bench matters, check this measurement before the cubic feet.\u003c\/p\u003e\n\u003cp\u003eIt holds about 330 pounds of stone, 10 boxes, twice what the CLIFF 9 carries. The circuit steps up here: HUUM's manual calls for a 50 amp breaker and 8 AWG cable, against 30 amps for the STEEL 6.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9-tinted\" id=\"parts\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n    \u003ch2\u003eWhat a working STEEL 9 takes, beyond the heater\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eA sauna heater is several purchases, and the others are easy to miss. Nothing here is padding: the heater will not run without them.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-tw\"\u003e\u003ctable class=\"hsteel9-spec\"\u003e\n      \u003ccaption\u003eRequired to operate\u003c\/caption\u003e\n      \u003ctr class=\"hsteel9-hl\"\u003e\n\u003cth\u003eThe heater\u003c\/th\u003e\n\u003ctd\u003eThis page.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eA certified control\u003c\/th\u003e\n\u003ctd\u003eThe control unit goes outside the hot room. HUUM's matched control is the UKU, and it is the controller the heater was certified with: the \u003ca href=\"\/products\/huum-uku-local-sauna-heater-control\"\u003eHUUM UKU Local control\u003c\/a\u003e or the \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU Wi-Fi control\u003c\/a\u003e.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \n      \u003ctr\u003e\n\u003cth\u003e10 boxes of stone\u003c\/th\u003e\n\u003ctd\u003eAbout 330 lb (150 kg), 1.2 to 1.9 inches (3 to 5 cm). \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eHUUM olivine diabase sauna stones\u003c\/a\u003e come in 33 pound boxes.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA guard is a code item, not an upsell\u003c\/h3\u003e\n    \u003cp\u003eThe International Residential Code asks for sauna heaters to be protected from accidental contact by a guard made of a material with low thermal conductivity, such as wood, without blocking the heat. You can build one or use the \u003ca href=\"\/products\/huum-steel-safety-rail\"\u003eSTEEL safety rail\u003c\/a\u003e HUUM makes for this heater. HUUM adds that when the guard is a flammable material such as wood, the heater's minimum safety distances still have to be kept to it. Check what your local code has adopted.\u003c\/p\u003e\n    \u003ch3\u003eOptional\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/huum-steel-reflector\"\u003ereflector panel\u003c\/a\u003e is the part HUUM makes for a tight space: HUUM states it halves the heater's safety distance to the walls, and the heater manual's own distances still decide the layout until your inspector agrees. The \u003ca href=\"\/products\/huum-cliff-steel-embedding-flange\"\u003eembedding flange\u003c\/a\u003e is only needed if the heater is sunk into a bench.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-warn\"\u003e\u003cp\u003eBuying the heater, the control and the stone together settles the order in one go: our \u003ca href=\"\/products\/huum-steel-9-sauna-heater-package\"\u003eHUUM STEEL 9 sauna heater package\u003c\/a\u003e is exactly that, priced at the parts added together. Or call and we will price the heater, control and stone together.\u003c\/p\u003e\u003c\/div\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hsteel9-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-9-with_rail.jpg?width=1200\" alt=\"HUUM STEEL heater with the HUUM safety rail fitted\" width=\"2048\" height=\"1365\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe heater with the safety rail HUUM lists for it, sold separately.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"electrical\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eElectrical\u003c\/p\u003e\n    \u003ch2\u003eThe breaker and wire size the HUUM STEEL 9 needs\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eSettle this before you buy, because it is the line item that surprises people. The heater is hardwired by a licensed electrician.\u003c\/p\u003e\n    \u003cp\u003eThe figures below are HUUM's, from its US manual. They are the manufacturer's minimum, not a design for your house: sauna heating is a continuous load, so the National Electrical Code can require a larger breaker and heavier conductors than the manual's figure, and local amendments differ. Your electrician sizes the circuit. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n    \n    \u003cdiv class=\"hsteel9-tw\"\u003e\u003ctable class=\"hsteel9-ladder hsteel9-rooms\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003cth\u003eWhat HUUM specifies\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hsteel9-on\"\u003e\n\u003ctd class=\"hsteel9-kw\"\u003e240 V\u003cspan class=\"hsteel9-tag\"\u003eMost homes\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e9 kW, 37.5 A, 50 A breaker, 8 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd class=\"hsteel9-kw\"\u003e208 V\u003c\/td\u003e\n\u003ctd\u003e7.1 kW, 32.45 A, 40 A breaker, 8 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e212 to 354 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhat the manual requires\u003c\/h3\u003e\n    \u003cp\u003eThe supply cable has to meet UL 62 in the United States or CSA 49 in Canada, and a means of disconnecting all poles, a circuit breaker, goes on the power circuit before the control. Cable with non heat resistant PVC insulation is not allowed, and the junction box must be waterproof and within 20 inches (50 cm) of the floor. HUUM's STEEL manual says any certified control panel may be used, and that the heater may be used only with a control unit that has a timer function.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM recommends connecting the heater without a GFCI breaker.\u003c\/b\u003e Its manual says it is recommended to connect the unit to the mains without one. Whether you can follow that depends on where the sauna goes and which edition of the electrical code your area has adopted: an outdoor sauna at a home may fall inside the Code's ground fault requirement for outdoor outlets at these ratings, depending on the edition adopted and how your inspector reads it, while an indoor hardwired heater usually is not caught. Where the manual and the adopted code disagree, the code and your inspector decide.\u003c\/p\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhy it is listed, and why that matters\u003c\/h3\u003e\n    \u003cp\u003eListed, but by SGS rather than UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and its certificate SGSNA\/20\/SUW\/00067X covers the STEEL 9 for the United States and Canada. SGS records conditions against that listing, and they are set out in full in the listing section above.\u003c\/p\u003e\n  \u003ch3\u003eWhy this page quotes two voltages\u003c\/h3\u003e\n\u003cp\u003eThere is nothing to pick here, and nothing on this page selects it. Almost every US home is supplied at 240 volts, while many commercial buildings and some apartment blocks are supplied at 208. It is the same heater either way, wired the same way: on 208 volts it draws less and makes less heat, so HUUM publishes a separate output and a smaller room range for it, which is why the rows under the Add to Cart button and the table below both give two. Your electrician reads the panel and tells you which row applies. Either way it is hardwired into the circuit, not plugged into an outlet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9-tinted\" id=\"install\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eClearances\u003c\/p\u003e\n    \u003ch2\u003eWhere the HUUM STEEL 9 can go\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eClearances are set per model and generally grow with output. These are this model's figures from HUUM's manual.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-tw\"\u003e\u003ctable class=\"hsteel9-spec\"\u003e\n      \u003ccaption\u003eMinimum distances, STEEL 9\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eTo the wall beside the heater\u003c\/th\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e20.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAbove the heater, to the ceiling\u003c\/th\u003e\n\u003ctd\u003e47.3 in (1200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e12.6 in W x 12.6 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e33.0 lb without stone\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eHUUM's manual has the 6, 9 and 11 anchored to the floor with brackets on the heater legs, fixed with a suitable screw, preferably at least 6 x 40 mm. SGS lists the CLIFF and STEEL on the condition that they are anchored.\u003c\/p\u003e\n    \u003cp\u003eThe room itself has to be built for a sauna, with an insulated shell, a reflective vapor barrier and supply and exhaust vents. Our \u003ca href=\"\/collections\/traditional-saunas\"\u003etraditional sauna rooms\u003c\/a\u003e arrive built that way.\u003c\/p\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hsteel9-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-9-in_sauna.jpg?width=1200\" alt=\"HUUM STEEL heater installed in the corner of a sauna\" width=\"1000\" height=\"1000\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eIn a finished sauna, with the clearances this page lists.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"stones\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eStone\u003c\/p\u003e\n    \u003ch2\u003eHow much stone the STEEL 9 takes, and how to lay it\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eThe stone is not a finishing touch. It is the thermal mass that turns 9 kW into steam, and the heater may not be switched on without it.\u003c\/p\u003e\n    \u003cp\u003eThis heater holds \u003cstrong\u003eabout 330 lb (150 kg)\u003c\/strong\u003e, which is \u003cstrong\u003e10 boxes\u003c\/strong\u003e of HUUM stone. HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across and supplies olivine diabase in 33 pound boxes.\u003c\/p\u003e\n    \u003ch3\u003eLaying it\u003c\/h3\u003e\n    \u003cp\u003eWash the stone first. Stack it loosely between the elements: HUUM's manual warns that stone packed too close makes the elements overheat, which shortens their life and slows the heating. The stone on the outer face goes close together, so no element is visible. HUUM recommends having a specialist lay the stone, and allows ceramic stones only at the user's own responsibility.\u003c\/p\u003e\n\u003cdiv class=\"hsteel9-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's manual requires the stone to hide the elements completely, and warns that a sparsely filled stone container is a fire hazard.\u003c\/b\u003e\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9-tinted\" id=\"costs\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eRunning cost\u003c\/p\u003e\n    \u003ch2\u003eWhat the STEEL 9 costs to run\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eA sauna heater draws its full rated power while it heats, then cycles on the thermostat to hold temperature. That makes the ceiling easy to calculate and the real figure lower.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-tw\"\u003e\u003ctable class=\"hsteel9-spec\"\u003e\n      \u003ccaption\u003eAt the US average residential price of 18.3 cents a kilowatt hour (EIA, June 2026)\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eFull output, one hour\u003c\/th\u003e\n\u003ctd\u003e9 kW x 0.183 = about 1.65 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree hours at full draw, heat up and a session\u003c\/th\u003e\n\u003ctd\u003eabout 4.94 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree of those a week\u003c\/th\u003e\n\u003ctd\u003eabout 15 dollars a week\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eThose are ceilings, not averages: once the room is at temperature the thermostat cycles the elements, so the real bill lands under these ceilings. Your own rate is on your utility bill and varies widely by state.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-warn\"\u003e\u003cp\u003e\u003cb\u003eInsulation controls this number, not the heater.\u003c\/b\u003e HUUM's manuals call for an insulated room so the heater can run at its regular output.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"crate\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n    \u003ch2\u003eIn the STEEL 9 carton\u003c\/h2\u003e\n    \u003cdiv class=\"hsteel9-pairup\"\u003e\n      \u003cdiv\u003e\n        \u003cul class=\"hsteel9-chk\"\u003e\n\u003cli\u003eElectric heater\u003c\/li\u003e\n\u003cli\u003e4 adjustable legs\u003c\/li\u003e\n\u003cli\u003eInstallation and operation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003ch3\u003eNot included\u003c\/h3\u003e\n        \u003cp\u003eThe control, the stone, and the electrical work. The control and 10 boxes of stone are required to operate the heater. The rail, reflector and embedding flange are optional.\u003c\/p\u003e\n        \u003ch3\u003eLead time\u003c\/h3\u003e\n        \u003cp\u003eDelivery estimates are shown on this page and at checkout. If you need a date before you commit, call us and we will confirm the current position with the distributor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9-tinted\" id=\"specs\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eReference\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL 9 specifications\u003c\/h2\u003e\n    \u003cdetails class=\"hsteel9-more\" open\u003e\n      \u003csummary\u003eFull specification tables\u003c\/summary\u003e\n      \u003cdiv class=\"hsteel9-tw\"\u003e\u003ctable class=\"hsteel9-spec\"\u003e\n\u003ccaption\u003eFrom the STEEL User Manual USA v9 (November 2025), Tables 1 to 3\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater output\u003c\/th\u003e\n\u003ctd\u003e9 kW at 240 V, 7.1 kW at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom volume\u003c\/th\u003e\n\u003ctd\u003e283 to 460 adjusted cu. ft. at 240 V, 212 to 354 cu. ft. at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum room height\u003c\/th\u003e\n\u003ctd\u003e86.6 in (2200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated current\u003c\/th\u003e\n\u003ctd\u003e37.5 A at 240 V, 32.45 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCircuit breaker\u003c\/th\u003e\n\u003ctd\u003e50 A at 240 V, 40 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum supply cable\u003c\/th\u003e\n\u003ctd\u003e8 AWG at 240 V, 8 AWG at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone capacity\u003c\/th\u003e\n\u003ctd\u003eAbout 330 lb (150 kg), 10 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone size\u003c\/th\u003e\n\u003ctd\u003e1.2 to 1.9 in (3 to 5 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e12.6 in W x 12.6 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the wall beside it\u003c\/th\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e20.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance above the heater\u003c\/th\u003e\n\u003ctd\u003e47.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eSeparate certified control required, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n      \u003cdiv class=\"hsteel9-tw\"\u003e\u003ctable class=\"hsteel9-spec\"\u003e\n\u003ccaption\u003ePart number, certification and warranty\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eH1006022\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e33.0 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003eSingle phase, 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eSGS Listed for North America (SGSNA\/20\/SUW\/00067X)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003eHUUM limited warranty, 3 years for private use and 1 year for commercial use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"compare\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eThe range\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL 9 against the rest of the STEEL range\u003c\/h2\u003e\n    \u003cp class=\"hsteel9-lead\"\u003eEvery figure below is HUUM's own, from its US manual, and the breaker column is the manufacturer's minimum rather than a design for your house.\u003c\/p\u003e\n    \u003cp\u003eScroll the table sideways to see every model.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel9-tw hsteel9-tw--scroll\"\u003e\u003ctable class=\"hsteel9-cmp\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-mini-4-electric-sauna-heater\"\u003e\u003cspan class=\"hsteel9-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel9-cmp-m\"\u003eSTEEL Mini 4\u003c\/span\u003e\u003cspan class=\"hsteel9-cmp-here\"\u003e4 kW, 106 to 177 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-6-electric-sauna-heater\"\u003e\u003cspan class=\"hsteel9-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel9-cmp-m\"\u003eSTEEL 6\u003c\/span\u003e\u003cspan class=\"hsteel9-cmp-here\"\u003e6 kW, 177 to 318 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth class=\"hsteel9-me\"\u003e\n\u003cspan class=\"hsteel9-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel9-cmp-m\"\u003eSTEEL 9\u003c\/span\u003e\u003cspan class=\"hsteel9-cmp-here\"\u003eYou are here\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-11-electric-sauna-heater\"\u003e\u003cspan class=\"hsteel9-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel9-cmp-m\"\u003eSTEEL 11\u003c\/span\u003e\u003cspan class=\"hsteel9-cmp-here\"\u003e11 kW, 354 to 566 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput at 240 V\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003ctd class=\"hsteel9-me\"\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated room\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003ctd class=\"hsteel9-me\"\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent\u003c\/td\u003e\n\u003ctd\u003e14.58 A\u003c\/td\u003e\n\u003ctd\u003e25 A\u003c\/td\u003e\n\u003ctd class=\"hsteel9-me\"\u003e37.5 A\u003c\/td\u003e\n\u003ctd\u003e43.75 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaker\u003c\/td\u003e\n\u003ctd\u003e20 A\u003c\/td\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003ctd class=\"hsteel9-me\"\u003e50 A\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum cable\u003c\/td\u003e\n\u003ctd\u003e12 AWG\u003c\/td\u003e\n\u003ctd\u003e10 AWG\u003c\/td\u003e\n\u003ctd class=\"hsteel9-me\"\u003e8 AWG\u003c\/td\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTo the wall beside it\u003c\/td\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003ctd class=\"hsteel9-me\"\u003e3.94 in\u003c\/td\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd class=\"hsteel9-me\"\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhen a STEEL is the wrong heater\u003c\/h3\u003e\n    \u003cp\u003eThe STEEL tops out at 11 kW and 566 cubic feet. If you want the stone on show, the CLIFF carries the same outputs in a slimmer 10.6 inch column. For a bigger room, a HIVE goes to 18 kW.\u003c\/p\u003e\n    \u003cp\u003eCompare the whole range on our \u003ca href=\"\/collections\/electric-sauna-heaters\"\u003eelectric sauna heaters\u003c\/a\u003e page, browse every \u003ca href=\"\/collections\/sauna-heaters\"\u003esauna heater\u003c\/a\u003e we carry, or see every model in our \u003ca href=\"\/collections\/huum\"\u003eHUUM sauna heaters\u003c\/a\u003e collection.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\"\u003e\n  \u003cdiv class=\"hsteel9-c\"\u003e\n    \u003cp class=\"hsteel9-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL 9 questions buyers ask before ordering\u003c\/h2\u003e\n    \u003cdiv class=\"hsteel9-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat size sauna will the HUUM STEEL 9 heat?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003eHUUM rates it for 283 to 460 cubic feet on 240 volts, or 212 to 354 cubic feet on 208 volts. Measure length by width by height in feet, then add 3.3 cubic feet for every square foot of uninsulated glass, brick or tile wall, and size from that number.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL 9 come with a control?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003eNo. Every HUUM electric heater needs a separate certified control, bought separately, and the control unit goes outside the hot room. HUUM's matched control is the UKU, the controller this heater was certified with, in Local or Wi-Fi form.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many boxes of stone does the HUUM STEEL 9 need?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003e10 boxes. The heater holds about 330 lb (150 kg) and HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across. HUUM's own stone is olivine diabase in 33 pound boxes. The heater may not be run before it is properly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat breaker and wire does the HUUM STEEL 9 need?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003eOn 240 volts it draws 37.5 A and HUUM specifies a 50 A breaker with 8 AWG cable. On 208 volts it is 32.45 A, a 40 A breaker and 8 AWG. The cable must meet UL 62 in the United States or CSA 49 in Canada, and your electrician sizes the install to the National Electrical Code and to local amendments. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the HUUM STEEL 9 UL listed?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003eIt is listed by SGS, not by UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and it lists the STEEL 9 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install the HUUM STEEL 9 myself?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003eNot if you want the warranty. HUUM's warranty requires the heater to be installed and connected by a licensed electrician, with proof presented to HUUM, and HUUM recommends a specialist lays the stone. The heater is hardwired and the manual forbids cable with non heat resistant PVC insulation. Keep the electrician's invoice.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL 9 need a GFCI breaker?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003eHUUM's manual says it is recommended to connect the heater without one. Whether you can follow that depends on where the sauna goes and which edition of the electrical code your area has adopted. An outdoor sauna at a home may fall inside the Code's ground fault requirement for outdoor outlets at these ratings, depending on the edition adopted and how your inspector reads it, while an indoor hardwired heater usually is not caught. Where the manual and the adopted code disagree, the code and your inspector decide.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan the HUUM STEEL 9 be set into the bench?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003eYes, with the embedding flange. HUUM's condition is that at least 21.7 inches (550 mm) of the heater still stands above the bench surface once it is set in; the flange itself only covers the cut edge of the opening.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL 9 need a UKU extension box?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003eNo. The extension box is for HUUM heaters above 11 kW, which means the HIVE 12, 15 and 18. This heater runs from the UKU's main module on its own.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the HUUM STEEL 9?\u003c\/summary\u003e\u003cdiv class=\"hsteel9-fb\"\u003e\u003cp\u003eHUUM warrants its electric heaters, wood stoves and controls for 3 years in a private sauna and 1 year in a commercial one, from the date of purchase, with spare parts covered for 1 year. Heating elements, controller sensors, stones, HUUM accessories, and wood stove door glass and ash grates are excluded, and so is damage from unsuitable stones or from a heater sized wrong for the room. HUUM counts it as commercial use if a registered business uses the product commercially, if a private user uses it commercially, or if a private user runs it for more than 1,500 hours in a 12 month period. For the warranty to apply, the heater has to be installed and connected by a licensed electrician with proof presented to HUUM, installed and operated to HUUM's manual and to local building, electrical and fire codes, and installed complete. Damage found on delivery has to be reported to us within 48 hours of delivery, with photographs and before the heater is installed; that is our window, and because it is shorter than HUUM's 7 days, it is the one that applies to the HUUM warranty. Any defect has to be reported within 30 days of discovering it. Because elements are excluded, we stock them as \u003ca href=\"\/products\/huum-cliff-steel-heating-element\"\u003ereplacement parts\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsteel9-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsteel9-c\"\u003e\n\u003cp class=\"hsteel9-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the STEEL 9 is the right output?\u003c\/h2\u003e\n\u003cp\u003eTell us the room size and how the walls are built, and we will size it with you before you order. The stone and the UKU control sit on this page, above Add to Cart, so the whole order goes in together. If you would rather take it in one line, we build the same parts as a \u003ca href=\"\/collections\/sauna-heater-packages\"\u003esauna heater package\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"hsteel9-who\"\u003e\n\u003cimg class=\"hsteel9-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsteel9-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsteel9-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"Default Title","offer_id":53514384769391,"sku":"H1006022","price":2224.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-9-studio.jpg?v=1790068947"},{"product_id":"huum-steel-11-electric-sauna-heater","title":"HUUM STEEL 11 Electric Sauna Heater, 11 kW","description":"\u003cstyle\u003e.hsteel11{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--body);line-height:1.65;letter-spacing:normal;-webkit-font-smoothing:antialiased;background:#fff}.hsteel11 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32px;border-radius:var(--r-sm);text-decoration:none;margin:8px 0 0}.hsteel11 .hsteel11-c .hsteel11-btn:hover,.hsteel11 .hsteel11-btn:hover{background:var(--ink);color:#fff}.hsteel11 .hsteel11-close .hsteel11-btn{display:inline-block;background:var(--bright);color:var(--ink);font-weight:700;font-size:15.5px;padding:16px 32px;border-radius:var(--r-sm);text-decoration:none}.hsteel11 .hsteel11-close .hsteel11-up{display:block;margin-top:16px;color:#C3B6A5;font-size:15.5px;text-decoration:none;padding:10px 0}@media screen and (max-width:840px){.hsteel11 .hsteel11-pairup{grid-template-columns:1fr;gap:24px}.hsteel11 .hsteel11-chk{grid-template-columns:1fr}.hsteel11 .hsteel11-vidrow{flex-direction:column;align-items:stretch}.hsteel11 .hsteel11-vid{--cap:380px;align-self:center}.hsteel11 .hsteel11-vidrow{gap:24px}.hsteel11 .hsteel11-c{padding:0 16px}.hsteel11 section{padding:40px 0}.hsteel11 section:first-of-type{padding-top:20px}.hsteel11 h2{font-size:23px}.hsteel11 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.hsteel11-hl th,.hsteel11 .hsteel11-ladder tr.hsteel11-on td,.hsteel11 table.hsteel11-cmp td.hsteel11-me{border-bottom-color:var(--edge)}@media screen and (max-width:840px){.hsteel11 table.hsteel11-cmp thead a{min-height:44px;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:2px}}.rte .hsteel11 table th,.rte .hsteel11 table td{padding:11px var(--gut)}.hsteel11 .hsteel11-ladder th:last-child,.hsteel11 .hsteel11-ladder td:last-child{text-align:left;white-space:normal;overflow-wrap:anywhere}.hsteel11 .hsteel11-buy{align-items:start}.hsteel11 .hsteel11-buy li span a{display:inline-block;padding:16px 0;margin:-16px 0}.hsteel11 table.hsteel11-cmp td:first-child{position:sticky;left:0;z-index:1;background:#fff;box-shadow:inset 0 -1px 0 var(--rule),1px 0 0 var(--rule)}.hsteel11 table.hsteel11-cmp thead th:first-child{position:sticky;left:0;z-index:2;background:var(--fill)}@media screen and (max-width:560px){.hsteel11 .hsteel11-ladder td:last-child::before{content:\"Nameplate draw:\\00a0\";font-weight:700;color:var(--ink)}}@media screen and (max-width:480px){.hsteel11 table.hsteel11-spec th,.hsteel11 table.hsteel11-spec td{display:block;width:auto}.hsteel11 table.hsteel11-spec th{border-bottom:0;padding-bottom:0}}.hsteel11 .hsteel11-vid .video-wrapper{position:absolute !important;inset:0;width:100%;height:100%;padding:0 !important;margin:0}.hsteel11 .hsteel11-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.hsteel11 .hsteel11-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.hsteel11 .hsteel11-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.hsteel11 .hsteel11-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.hsteel11 .hsteel11-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}.hsteel11 .hsteel11-close p.hsteel11-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hsteel11 .hsteel11-stat3 a{color:var(--bright)}.hsteel11 .hsteel11-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hsteel11 .hsteel11-cmp thead a .hsteel11-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hsteel11 .hsteel11-ladder.hsteel11-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hsteel11 .hsteel11-ladder.hsteel11-out td:last-child::before{content:\"Output:\\00a0\"}}.hsteel11 .hsteel11-tw + p,.hsteel11 .hsteel11-tw + h3,.hsteel11 .hsteel11-warn + p,.hsteel11 .hsteel11-warn + h3,.hsteel11 .hsteel11-more + p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hsteel11\"\u003e\n\u003csection id=\"overview\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cdetails class=\"hsteel11-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hsteel11-ct\"\u003e9 sections\u003c\/span\u003e\u003c\/summary\u003e\u003col\u003e\n\u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#video\"\u003eVideo\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fit\"\u003eWill it fit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#parts\"\u003eWhat you need\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#electrical\"\u003eBreaker and wire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#stones\"\u003eStone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#compare\"\u003eHow it compares\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eQuestions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#order\"\u003eOrder\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/details\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eThe largest STEEL\u003c\/p\u003e\n    \u003ch2\u003eThe HUUM STEEL 11 is a 11 kW floor standing electric sauna heater for rooms of 354 to 566 cubic feet\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eEleven kilowatts for rooms of 354 to 566 cubic feet, with the same 3.94 inch side clearance as the STEEL 9.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-stat3\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteel11-lbl\"\u003eThe room\u003c\/p\u003e\n        \u003cp class=\"hsteel11-big\"\u003e354 to 566 cu. ft.\u003c\/p\u003e\n        \u003cp\u003eLength by width by height, in feet. Add 3.3 cubic feet for every square foot of uninsulated glass, tile or brick wall, then size from the adjusted number.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteel11-lbl\"\u003eRated current\u003c\/p\u003e\n        \u003cp class=\"hsteel11-big\"\u003e43.75 A at 240 V\u003c\/p\u003e\n        \u003cp\u003eHUUM's manual calls for a 50 A breaker and 8 AWG cable. Worth confirming your panel can carry it. It is hardwired by a licensed electrician, who sizes the circuit to the National Electrical Code. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hsteel11-lbl\"\u003eThe rest of the order\u003c\/p\u003e\n        \u003cp class=\"hsteel11-big\"\u003eControl and 10 boxes of stone\u003c\/p\u003e\n        \u003cp\u003eNeither is in the carton, and neither needs a second order: open \u003cstrong\u003eComplete your heater\u003c\/strong\u003e just above the Add to Cart button and both travel on this one. A \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU control\u003c\/a\u003e runs the heater from outside the room, and this heater holds about 330 lb (150 kg) of \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003esauna stone\u003c\/a\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection id=\"video\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eWatch\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-vidrow\"\u003e\n    \u003cdiv class=\"hsteel11-vid\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/_XxhQ8VFWJk\" title=\"Building it into the bench, HUUM\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n    \u003cdiv class=\"hsteel11-vidbody\"\u003e\n    \u003ch2\u003eBuilding it into the bench\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eThe optional embedding flange, from bench cut-out to finished edge.\u003c\/p\u003e\n    \u003cp\u003eHUUM filmed this itself. Its heater installation films are made for Europe and show European wiring, so we do not run them here: the sauna side of the job is the same, the electrical side is not.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003c\/section\u003e\n\n\n\u003csection class=\"hsteel11-tinted\" id=\"fit\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eSizing\u003c\/p\u003e\n    \u003ch2\u003eWill the HUUM STEEL 11 heat your sauna?\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eSauna heaters are sized on room volume, not floor area. Measure the room in feet and multiply length by width by height, then pick the heater whose published range contains that figure.\u003c\/p\u003e\n    \u003cp\u003eHUUM rates the STEEL 11 for \u003cstrong\u003e354 to 566 cubic feet\u003c\/strong\u003e on a 240 volt supply, and its manual warns that the warranty does not apply if the heater and room are dimensioned incorrectly.\u003c\/p\u003e\n    \u003cp\u003eCold surfaces change the answer. HUUM's manual says to add \u003cstrong\u003e3.3 cubic feet of volume for every square foot\u003c\/strong\u003e of uninsulated brick, tile or glass wall in the room. It does not say whether a glass door counts, so counting it is the cautious choice.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-tw\"\u003e\u003ctable class=\"hsteel11-ladder hsteel11-out\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11-kw\"\u003eSTEEL Mini 4\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft. at 240 V, 106 to 159 at 208 V\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11-kw\"\u003eSTEEL 6\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft. at 240 V, 142 to 248 at 208 V\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11-kw\"\u003eSTEEL 9\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft. at 240 V, 212 to 354 at 208 V\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteel11-on\"\u003e\n\u003ctd class=\"hsteel11-kw\"\u003eSTEEL 11 \u003cspan class=\"hsteel11-tag\"\u003eThis heater\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft. at 240 V, 265 to 424 at 208 V\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA worked example for the STEEL 11\u003c\/h3\u003e\n    \u003cp\u003eTake a room 9 feet by 8 feet with a 7.5 foot ceiling: 72 square feet of floor and 540 cubic feet, inside this heater's 354 to 566. Count a full glass door, take 13 square feet as an example and measure your own, and at 3.3 cubic feet a square foot the room behaves like about 583 cubic feet, which is past the top of the STEEL 11's range.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's STEEL manual gives a minimum sauna room height of 86.6 inches (2200 mm)\u003c\/b\u003e, with a regular height of 86.6 to 91 inches, and advises bringing a taller ceiling down into that range to reduce the volume.\u003c\/p\u003e\u003c\/div\u003e\n    \u003cp\u003eNot sure which way a borderline room goes? Our \u003ca href=\"\/pages\/find-your-sauna-heater\"\u003esauna heater finder\u003c\/a\u003e walks the same arithmetic, the \u003ca href=\"\/pages\/sauna-heater-buyers-guide\"\u003esauna heater buyers guide\u003c\/a\u003e explains what the numbers mean, or call and we will do it with you.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"design\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eWhat makes it a STEEL\u003c\/p\u003e\n    \u003ch2\u003eWhat the STEEL 11 is built around\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eThe STEEL wraps its stone in a stainless steel enclosure. HUUM describes it as a sleek design with small safety distances, and the manual's figures bear that out.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-block\"\u003e\n        \u003ch3\u003eA lot of stone for the size\u003c\/h3\u003e\n\u003cp\u003eIt holds about 330 lb (150 kg). HUUM describes the STEEL as holding a large amount of stone for gentle and long lasting steam.\u003c\/p\u003e\n\u003ch3\u003eOn the floor\u003c\/h3\u003e\n\u003cp\u003eThe heater is 12.6 in W x 12.6 in D x 38.4 in H. The 6, 9 and 11 stand on the floor on the adjustable legs in the carton and are anchored to the floor with brackets, fixed with a suitable screw, preferably at least 6 x 40 mm, according to HUUM's manual.\u003c\/p\u003e\n\u003ch3\u003eIt can be sunk into the bench\u003c\/h3\u003e\n\u003cp\u003eHUUM says the STEEL can be embedded into the sauna bench, with at least 21.7 inches (550 mm) of the heater above the bench surface. The \u003ca href=\"\/products\/huum-cliff-steel-embedding-flange\"\u003eCLIFF and STEEL embedding flange\u003c\/a\u003e covers the cut edge.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cfigure\u003e\u003cdiv class=\"hsteel11-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-11-studio.jpg?v=1790068960\u0026amp;width=1200\" alt=\"HUUM STEEL floor standing electric sauna heater filled with stones\" width=\"2048\" height=\"2048\" loading=\"eager\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe HUUM STEEL 11.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003ch3\u003eThe STEEL 11 against the CLIFF 11\u003c\/h3\u003e\n    \u003cp\u003eBoth give 11 kW for the same room range on the same circuit. The difference is the space around them and the stone in them. HUUM's manual asks for 3.94 inches to the side wall here and 20.5 inches wall to wall, against 15 and 40.5 inches for the CLIFF 11, and the STEEL holds about 330 pounds of stone to the CLIFF's 165.\u003c\/p\u003e\n\u003cp\u003eAbove 566 cubic feet the STEEL range stops, and a HIVE is the next step. On 208 volts this heater makes 8.5 kW for 265 to 424 cubic feet.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11-tinted\" id=\"parts\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n    \u003ch2\u003eWhat a working STEEL 11 takes, beyond the heater\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eA sauna heater is several purchases, and the others are easy to miss. Nothing here is padding: the heater will not run without them.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-tw\"\u003e\u003ctable class=\"hsteel11-spec\"\u003e\n      \u003ccaption\u003eRequired to operate\u003c\/caption\u003e\n      \u003ctr class=\"hsteel11-hl\"\u003e\n\u003cth\u003eThe heater\u003c\/th\u003e\n\u003ctd\u003eThis page.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eA certified control\u003c\/th\u003e\n\u003ctd\u003eThe control unit goes outside the hot room. HUUM's matched control is the UKU, and it is the controller the heater was certified with: the \u003ca href=\"\/products\/huum-uku-local-sauna-heater-control\"\u003eHUUM UKU Local control\u003c\/a\u003e or the \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU Wi-Fi control\u003c\/a\u003e.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \n      \u003ctr\u003e\n\u003cth\u003e10 boxes of stone\u003c\/th\u003e\n\u003ctd\u003eAbout 330 lb (150 kg), 1.2 to 1.9 inches (3 to 5 cm). \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eHUUM olivine diabase sauna stones\u003c\/a\u003e come in 33 pound boxes.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA guard is a code item, not an upsell\u003c\/h3\u003e\n    \u003cp\u003eThe International Residential Code asks for sauna heaters to be protected from accidental contact by a guard made of a material with low thermal conductivity, such as wood, without blocking the heat. You can build one or use the \u003ca href=\"\/products\/huum-steel-safety-rail\"\u003eSTEEL safety rail\u003c\/a\u003e HUUM makes for this heater. HUUM adds that when the guard is a flammable material such as wood, the heater's minimum safety distances still have to be kept to it. Check what your local code has adopted.\u003c\/p\u003e\n    \u003ch3\u003eOptional\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/huum-steel-reflector\"\u003ereflector panel\u003c\/a\u003e is the part HUUM makes for a tight space: HUUM states it halves the heater's safety distance to the walls, and the heater manual's own distances still decide the layout until your inspector agrees. The \u003ca href=\"\/products\/huum-cliff-steel-embedding-flange\"\u003eembedding flange\u003c\/a\u003e is only needed if the heater is sunk into a bench.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-warn\"\u003e\u003cp\u003eBuying the heater, the control and the stone together settles the order in one go: our \u003ca href=\"\/products\/huum-steel-11-sauna-heater-package\"\u003eHUUM STEEL 11 sauna heater package\u003c\/a\u003e is exactly that, priced at the parts added together. Or call and we will price the heater, control and stone together.\u003c\/p\u003e\u003c\/div\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hsteel11-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-11-with_rail.jpg?width=1200\" alt=\"HUUM STEEL heater with the HUUM safety rail fitted\" width=\"2048\" height=\"1365\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe heater with the safety rail HUUM lists for it, sold separately.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"electrical\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eElectrical\u003c\/p\u003e\n    \u003ch2\u003eThe breaker and wire size the HUUM STEEL 11 needs\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eSettle this before you buy, because it is the line item that surprises people. The heater is hardwired by a licensed electrician.\u003c\/p\u003e\n    \u003cp\u003eThe figures below are HUUM's, from its US manual. They are the manufacturer's minimum, not a design for your house: sauna heating is a continuous load, so the National Electrical Code can require a larger breaker and heavier conductors than the manual's figure, and local amendments differ. Your electrician sizes the circuit. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n    \n    \u003cdiv class=\"hsteel11-tw\"\u003e\u003ctable class=\"hsteel11-ladder hsteel11-rooms\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003cth\u003eWhat HUUM specifies\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hsteel11-on\"\u003e\n\u003ctd class=\"hsteel11-kw\"\u003e240 V\u003cspan class=\"hsteel11-tag\"\u003eMost homes\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e11 kW, 43.75 A, 50 A breaker, 8 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd class=\"hsteel11-kw\"\u003e208 V\u003c\/td\u003e\n\u003ctd\u003e8.5 kW, 37.98 A, 50 A breaker, 8 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e265 to 424 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhat the manual requires\u003c\/h3\u003e\n    \u003cp\u003eThe supply cable has to meet UL 62 in the United States or CSA 49 in Canada, and a means of disconnecting all poles, a circuit breaker, goes on the power circuit before the control. Cable with non heat resistant PVC insulation is not allowed, and the junction box must be waterproof and within 20 inches (50 cm) of the floor. HUUM's STEEL manual says any certified control panel may be used, and that the heater may be used only with a control unit that has a timer function.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM recommends connecting the heater without a GFCI breaker.\u003c\/b\u003e Its manual says it is recommended to connect the unit to the mains without one. Whether you can follow that depends on where the sauna goes and which edition of the electrical code your area has adopted: an outdoor sauna at a home may fall inside the Code's ground fault requirement for outdoor outlets at these ratings, depending on the edition adopted and how your inspector reads it, while an indoor hardwired heater usually is not caught. Where the manual and the adopted code disagree, the code and your inspector decide.\u003c\/p\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhy it is listed, and why that matters\u003c\/h3\u003e\n    \u003cp\u003eListed, but by SGS rather than UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and its certificate SGSNA\/20\/SUW\/00067X covers the STEEL 11 for the United States and Canada. SGS records conditions against that listing, and they are set out in full in the listing section above.\u003c\/p\u003e\n  \u003ch3\u003eWhy this page quotes two voltages\u003c\/h3\u003e\n\u003cp\u003eThere is nothing to pick here, and nothing on this page selects it. Almost every US home is supplied at 240 volts, while many commercial buildings and some apartment blocks are supplied at 208. It is the same heater either way, wired the same way: on 208 volts it draws less and makes less heat, so HUUM publishes a separate output and a smaller room range for it, which is why the rows under the Add to Cart button and the table below both give two. Your electrician reads the panel and tells you which row applies. Either way it is hardwired into the circuit, not plugged into an outlet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11-tinted\" id=\"install\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eClearances\u003c\/p\u003e\n    \u003ch2\u003eWhere the HUUM STEEL 11 can go\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eClearances are set per model and generally grow with output. These are this model's figures from HUUM's manual.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-tw\"\u003e\u003ctable class=\"hsteel11-spec\"\u003e\n      \u003ccaption\u003eMinimum distances, STEEL 11\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eTo the wall beside the heater\u003c\/th\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e20.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAbove the heater, to the ceiling\u003c\/th\u003e\n\u003ctd\u003e47.3 in (1200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e12.6 in W x 12.6 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e33.0 lb without stone\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eHUUM's manual has the 6, 9 and 11 anchored to the floor with brackets on the heater legs, fixed with a suitable screw, preferably at least 6 x 40 mm. SGS lists the CLIFF and STEEL on the condition that they are anchored.\u003c\/p\u003e\n    \u003cp\u003eThe room itself has to be built for a sauna, with an insulated shell, a reflective vapor barrier and supply and exhaust vents. Our \u003ca href=\"\/collections\/traditional-saunas\"\u003etraditional sauna rooms\u003c\/a\u003e arrive built that way.\u003c\/p\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hsteel11-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-11-in_sauna.jpg?width=1200\" alt=\"HUUM STEEL heater installed in the corner of a sauna\" width=\"1000\" height=\"1000\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eIn a finished sauna, with the clearances this page lists.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"stones\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eStone\u003c\/p\u003e\n    \u003ch2\u003eHow much stone the STEEL 11 takes, and how to lay it\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eThe stone is not a finishing touch. It is the thermal mass that turns 11 kW into steam, and the heater may not be switched on without it.\u003c\/p\u003e\n    \u003cp\u003eThis heater holds \u003cstrong\u003eabout 330 lb (150 kg)\u003c\/strong\u003e, which is \u003cstrong\u003e10 boxes\u003c\/strong\u003e of HUUM stone. HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across and supplies olivine diabase in 33 pound boxes.\u003c\/p\u003e\n    \u003ch3\u003eLaying it\u003c\/h3\u003e\n    \u003cp\u003eWash the stone first. Stack it loosely between the elements: HUUM's manual warns that stone packed too close makes the elements overheat, which shortens their life and slows the heating. The stone on the outer face goes close together, so no element is visible. HUUM recommends having a specialist lay the stone, and allows ceramic stones only at the user's own responsibility.\u003c\/p\u003e\n\u003cdiv class=\"hsteel11-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's manual requires the stone to hide the elements completely, and warns that a sparsely filled stone container is a fire hazard.\u003c\/b\u003e\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11-tinted\" id=\"costs\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eRunning cost\u003c\/p\u003e\n    \u003ch2\u003eWhat the STEEL 11 costs to run\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eA sauna heater draws its full rated power while it heats, then cycles on the thermostat to hold temperature. That makes the ceiling easy to calculate and the real figure lower.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-tw\"\u003e\u003ctable class=\"hsteel11-spec\"\u003e\n      \u003ccaption\u003eAt the US average residential price of 18.3 cents a kilowatt hour (EIA, June 2026)\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eFull output, one hour\u003c\/th\u003e\n\u003ctd\u003e11 kW x 0.183 = about 2.01 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree hours at full draw, heat up and a session\u003c\/th\u003e\n\u003ctd\u003eabout 6.04 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree of those a week\u003c\/th\u003e\n\u003ctd\u003eabout 18 dollars a week\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eThose are ceilings, not averages: once the room is at temperature the thermostat cycles the elements, so the real bill lands under these ceilings. Your own rate is on your utility bill and varies widely by state.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-warn\"\u003e\u003cp\u003e\u003cb\u003eInsulation controls this number, not the heater.\u003c\/b\u003e HUUM's manuals call for an insulated room so the heater can run at its regular output.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"crate\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n    \u003ch2\u003eIn the STEEL 11 carton\u003c\/h2\u003e\n    \u003cdiv class=\"hsteel11-pairup\"\u003e\n      \u003cdiv\u003e\n        \u003cul class=\"hsteel11-chk\"\u003e\n\u003cli\u003eElectric heater\u003c\/li\u003e\n\u003cli\u003e4 adjustable legs\u003c\/li\u003e\n\u003cli\u003eInstallation and operation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003ch3\u003eNot included\u003c\/h3\u003e\n        \u003cp\u003eThe control, the stone, and the electrical work. The control and 10 boxes of stone are required to operate the heater. The rail, reflector and embedding flange are optional.\u003c\/p\u003e\n        \u003ch3\u003eLead time\u003c\/h3\u003e\n        \u003cp\u003eDelivery estimates are shown on this page and at checkout. If you need a date before you commit, call us and we will confirm the current position with the distributor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11-tinted\" id=\"specs\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eReference\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL 11 specifications\u003c\/h2\u003e\n    \u003cdetails class=\"hsteel11-more\" open\u003e\n      \u003csummary\u003eFull specification tables\u003c\/summary\u003e\n      \u003cdiv class=\"hsteel11-tw\"\u003e\u003ctable class=\"hsteel11-spec\"\u003e\n\u003ccaption\u003eFrom the STEEL User Manual USA v9 (November 2025), Tables 1 to 3\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater output\u003c\/th\u003e\n\u003ctd\u003e11 kW at 240 V, 8.5 kW at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom volume\u003c\/th\u003e\n\u003ctd\u003e354 to 566 adjusted cu. ft. at 240 V, 265 to 424 cu. ft. at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum room height\u003c\/th\u003e\n\u003ctd\u003e86.6 in (2200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated current\u003c\/th\u003e\n\u003ctd\u003e43.75 A at 240 V, 37.98 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCircuit breaker\u003c\/th\u003e\n\u003ctd\u003e50 A at 240 V, 50 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum supply cable\u003c\/th\u003e\n\u003ctd\u003e8 AWG at 240 V, 8 AWG at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone capacity\u003c\/th\u003e\n\u003ctd\u003eAbout 330 lb (150 kg), 10 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone size\u003c\/th\u003e\n\u003ctd\u003e1.2 to 1.9 in (3 to 5 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e12.6 in W x 12.6 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the wall beside it\u003c\/th\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e20.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance above the heater\u003c\/th\u003e\n\u003ctd\u003e47.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eSeparate certified control required, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n      \u003cdiv class=\"hsteel11-tw\"\u003e\u003ctable class=\"hsteel11-spec\"\u003e\n\u003ccaption\u003ePart number, certification and warranty\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eH1006032\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e33.0 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003eSingle phase, 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eSGS Listed for North America (SGSNA\/20\/SUW\/00067X)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003eHUUM limited warranty, 3 years for private use and 1 year for commercial use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"compare\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eThe range\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL 11 against the rest of the STEEL range\u003c\/h2\u003e\n    \u003cp class=\"hsteel11-lead\"\u003eEvery figure below is HUUM's own, from its US manual, and the breaker column is the manufacturer's minimum rather than a design for your house.\u003c\/p\u003e\n    \u003cp\u003eScroll the table sideways to see every model.\u003c\/p\u003e\n    \u003cdiv class=\"hsteel11-tw hsteel11-tw--scroll\"\u003e\u003ctable class=\"hsteel11-cmp\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-mini-4-electric-sauna-heater\"\u003e\u003cspan class=\"hsteel11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel11-cmp-m\"\u003eSTEEL Mini 4\u003c\/span\u003e\u003cspan class=\"hsteel11-cmp-here\"\u003e4 kW, 106 to 177 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-6-electric-sauna-heater\"\u003e\u003cspan class=\"hsteel11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel11-cmp-m\"\u003eSTEEL 6\u003c\/span\u003e\u003cspan class=\"hsteel11-cmp-here\"\u003e6 kW, 177 to 318 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-steel-9-electric-sauna-heater\"\u003e\u003cspan class=\"hsteel11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel11-cmp-m\"\u003eSTEEL 9\u003c\/span\u003e\u003cspan class=\"hsteel11-cmp-here\"\u003e9 kW, 283 to 460 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth class=\"hsteel11-me\"\u003e\n\u003cspan class=\"hsteel11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hsteel11-cmp-m\"\u003eSTEEL 11\u003c\/span\u003e\u003cspan class=\"hsteel11-cmp-here\"\u003eYou are here\u003c\/span\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput at 240 V\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd class=\"hsteel11-me\"\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated room\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003ctd class=\"hsteel11-me\"\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent\u003c\/td\u003e\n\u003ctd\u003e14.58 A\u003c\/td\u003e\n\u003ctd\u003e25 A\u003c\/td\u003e\n\u003ctd\u003e37.5 A\u003c\/td\u003e\n\u003ctd class=\"hsteel11-me\"\u003e43.75 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaker\u003c\/td\u003e\n\u003ctd\u003e20 A\u003c\/td\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd class=\"hsteel11-me\"\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum cable\u003c\/td\u003e\n\u003ctd\u003e12 AWG\u003c\/td\u003e\n\u003ctd\u003e10 AWG\u003c\/td\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003ctd class=\"hsteel11-me\"\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTo the wall beside it\u003c\/td\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003ctd\u003e2.0 in\u003c\/td\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003ctd class=\"hsteel11-me\"\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd class=\"hsteel11-me\"\u003e10 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhen a STEEL is the wrong heater\u003c\/h3\u003e\n    \u003cp\u003eThe STEEL tops out at 11 kW and 566 cubic feet. If you want the stone on show, the CLIFF carries the same outputs in a slimmer 10.6 inch column. For a bigger room, a HIVE goes to 18 kW.\u003c\/p\u003e\n    \u003cp\u003eCompare the whole range on our \u003ca href=\"\/collections\/electric-sauna-heaters\"\u003eelectric sauna heaters\u003c\/a\u003e page, browse every \u003ca href=\"\/collections\/sauna-heaters\"\u003esauna heater\u003c\/a\u003e we carry, or see every model in our \u003ca href=\"\/collections\/huum\"\u003eHUUM sauna heaters\u003c\/a\u003e collection.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\"\u003e\n  \u003cdiv class=\"hsteel11-c\"\u003e\n    \u003cp class=\"hsteel11-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n    \u003ch2\u003eHUUM STEEL 11 questions buyers ask before ordering\u003c\/h2\u003e\n    \u003cdiv class=\"hsteel11-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat size sauna will the HUUM STEEL 11 heat?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003eHUUM rates it for 354 to 566 cubic feet on 240 volts, or 265 to 424 cubic feet on 208 volts. Measure length by width by height in feet, then add 3.3 cubic feet for every square foot of uninsulated glass, brick or tile wall, and size from that number.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL 11 come with a control?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003eNo. Every HUUM electric heater needs a separate certified control, bought separately, and the control unit goes outside the hot room. HUUM's matched control is the UKU, the controller this heater was certified with, in Local or Wi-Fi form.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many boxes of stone does the HUUM STEEL 11 need?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003e10 boxes. The heater holds about 330 lb (150 kg) and HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across. HUUM's own stone is olivine diabase in 33 pound boxes. The heater may not be run before it is properly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat breaker and wire does the HUUM STEEL 11 need?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003eOn 240 volts it draws 43.75 A and HUUM specifies a 50 A breaker with 8 AWG cable. On 208 volts it is 37.98 A, a 50 A breaker and 8 AWG. The cable must meet UL 62 in the United States or CSA 49 in Canada, and your electrician sizes the install to the National Electrical Code and to local amendments. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the HUUM STEEL 11 UL listed?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003eIt is listed by SGS, not by UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and it lists the STEEL 11 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install the HUUM STEEL 11 myself?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003eNot if you want the warranty. HUUM's warranty requires the heater to be installed and connected by a licensed electrician, with proof presented to HUUM, and HUUM recommends a specialist lays the stone. The heater is hardwired and the manual forbids cable with non heat resistant PVC insulation. Keep the electrician's invoice.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL 11 need a GFCI breaker?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003eHUUM's manual says it is recommended to connect the heater without one. Whether you can follow that depends on where the sauna goes and which edition of the electrical code your area has adopted. An outdoor sauna at a home may fall inside the Code's ground fault requirement for outdoor outlets at these ratings, depending on the edition adopted and how your inspector reads it, while an indoor hardwired heater usually is not caught. Where the manual and the adopted code disagree, the code and your inspector decide.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan the HUUM STEEL 11 be set into the bench?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003eYes, with the embedding flange. HUUM's condition is that at least 21.7 inches (550 mm) of the heater still stands above the bench surface once it is set in; the flange itself only covers the cut edge of the opening.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM STEEL 11 need a UKU extension box?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003eNo. The extension box is for HUUM heaters above 11 kW, which means the HIVE 12, 15 and 18. This heater runs from the UKU's main module on its own.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the HUUM STEEL 11?\u003c\/summary\u003e\u003cdiv class=\"hsteel11-fb\"\u003e\u003cp\u003eHUUM warrants its electric heaters, wood stoves and controls for 3 years in a private sauna and 1 year in a commercial one, from the date of purchase, with spare parts covered for 1 year. Heating elements, controller sensors, stones, HUUM accessories, and wood stove door glass and ash grates are excluded, and so is damage from unsuitable stones or from a heater sized wrong for the room. HUUM counts it as commercial use if a registered business uses the product commercially, if a private user uses it commercially, or if a private user runs it for more than 1,500 hours in a 12 month period. For the warranty to apply, the heater has to be installed and connected by a licensed electrician with proof presented to HUUM, installed and operated to HUUM's manual and to local building, electrical and fire codes, and installed complete. Damage found on delivery has to be reported to us within 48 hours of delivery, with photographs and before the heater is installed; that is our window, and because it is shorter than HUUM's 7 days, it is the one that applies to the HUUM warranty. Any defect has to be reported within 30 days of discovering it. Because elements are excluded, we stock them as \u003ca href=\"\/products\/huum-cliff-steel-heating-element\"\u003ereplacement parts\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsteel11-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsteel11-c\"\u003e\n\u003cp class=\"hsteel11-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the STEEL 11 is the right output?\u003c\/h2\u003e\n\u003cp\u003eTell us the room size and how the walls are built, and we will size it with you before you order. The stone and the UKU control sit on this page, above Add to Cart, so the whole order goes in together. If you would rather take it in one line, we build the same parts as a \u003ca href=\"\/collections\/sauna-heater-packages\"\u003esauna heater package\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"hsteel11-who\"\u003e\n\u003cimg class=\"hsteel11-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsteel11-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsteel11-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"Default Title","offer_id":53514387915119,"sku":"H1006032","price":2391.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-11-studio.jpg?v=1790068960"},{"product_id":"huum-steel-mini-4-sauna-heater-package","title":"HUUM STEEL Mini 4 Sauna Heater Package, 4 kW | UKU Control and Stones","description":"\u003cstyle\u003e.hsteelmini4pkg{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe 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var(--bright);outline-offset:-3px}.hsteelmini4pkg .hsteelmini4pkg-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.hsteelmini4pkg .hsteelmini4pkg-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.hsteelmini4pkg .hsteelmini4pkg-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}.hsteelmini4pkg .hsteelmini4pkg-close p.hsteelmini4pkg-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hsteelmini4pkg .hsteelmini4pkg-stat3 a{color:var(--bright)}.hsteelmini4pkg .hsteelmini4pkg-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hsteelmini4pkg .hsteelmini4pkg-cmp thead a .hsteelmini4pkg-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hsteelmini4pkg .hsteelmini4pkg-ladder.hsteelmini4pkg-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hsteelmini4pkg .hsteelmini4pkg-ladder.hsteelmini4pkg-out td:last-child::before{content:\"Output:\\00a0\"}}.hsteelmini4pkg .hsteelmini4pkg-tw + p,.hsteelmini4pkg .hsteelmini4pkg-tw + h3,.hsteelmini4pkg .hsteelmini4pkg-warn + p,.hsteelmini4pkg .hsteelmini4pkg-warn + h3,.hsteelmini4pkg .hsteelmini4pkg-more + p{margin-top:24px}.hsteelmini4pkg .hsteelmini4pkg-vid iframe{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark)}\u003c\/style\u003e\n\u003cdiv class=\"hsteelmini4pkg\"\u003e\n\u003csection id=\"overview\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n\u003cdetails class=\"hsteelmini4pkg-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hsteelmini4pkg-ct\"\u003e12 sections\u003c\/span\u003e\u003c\/summary\u003e\u003col\u003e\n\u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fit\"\u003eWill it fit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#heater\"\u003eThe heater\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#control\"\u003eThe control\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#electrical\"\u003eBreaker and wire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#stones\"\u003eStone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specs\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#compare\"\u003eHow it compares\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#crate\"\u003eWhat you get\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#delivery\"\u003eDelivery\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eQuestions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#order\"\u003eOrder\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/details\u003e\n\u003ch2\u003eHUUM STEEL Mini 4 Sauna Heater Package\u003c\/h2\u003e\n\u003cp class=\"hsteelmini4pkg-lead\"\u003eA HUUM heater carton holds the heater and its fixings. No control, no stone. This package is the STEEL Mini 4 with a UKU control and the 4 boxes of stone HUUM's manual asks for, so nothing is missing when the electrician arrives.\u003c\/p\u003e\n\u003cul class=\"hsteelmini4pkg-chk\"\u003e\n\u003cli\u003eThe HUUM STEEL Mini 4 sauna heater, 4 kW\u003c\/li\u003e\n\u003cli\u003eA HUUM UKU control, in the panel finish you pick above\u003c\/li\u003e\n\u003cli\u003e4 boxes of HUUM olivine diabase stone, 132 lb (60 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe package price is the component prices added together, at the manufacturer's own advertised prices. Nothing is added for bundling them, and there is no inflated compare at price. Buy the parts separately from us and you pay the same.\u003c\/p\u003e\n\u003cdiv class=\"hsteelmini4pkg-stat3\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteelmini4pkg-lbl\"\u003eOutput at 240 volts\u003c\/p\u003e\n\u003cp class=\"hsteelmini4pkg-big\"\u003e4 kW\u003c\/p\u003e\n\u003cp\u003eHUUM's rating on a 240 volt supply. On 208 volts the same heater makes 2.85 kW.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteelmini4pkg-lbl\"\u003eRoom it is rated for\u003c\/p\u003e\n\u003cp class=\"hsteelmini4pkg-big\"\u003e106 to 177 cu. ft.\u003c\/p\u003e\n\u003cp\u003eLength times width times height, with 3.3 cubic feet added for every square foot of uninsulated brick, tile or glass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteelmini4pkg-lbl\"\u003eStone included\u003c\/p\u003e\n\u003cp class=\"hsteelmini4pkg-big\"\u003e4 boxes\u003c\/p\u003e\n\u003cp\u003eHUUM olivine diabase in 33 pound boxes, covering the capacity HUUM publishes for this heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4pkg-tinted\" id=\"fit\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eSizing\u003c\/p\u003e\n\u003ch2\u003eWhich STEEL package suits your room\u003c\/h2\u003e\n\u003cp class=\"hsteelmini4pkg-lead\"\u003eEvery package in this series carries the same seven control choices and the same\ngrade of stone. What separates them is output, the room each one is rated for, and the stone load. There are 4 of them.\u003c\/p\u003e\n\u003cdiv class=\"hsteelmini4pkg-tw\"\u003e\u003ctable class=\"hsteelmini4pkg-ladder hsteelmini4pkg-rooms\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eStone included\u003c\/th\u003e\n\u003cth\u003eRated room at 240 V\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"hsteelmini4pkg-on\"\u003e\n\u003ctd class=\"hsteelmini4pkg-kw\"\u003eSTEEL Mini 4 \u003cspan class=\"hsteelmini4pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteelmini4pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-6-sauna-heater-package\"\u003eSTEEL 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteelmini4pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-9-sauna-heater-package\"\u003eSTEEL 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteelmini4pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-11-sauna-heater-package\"\u003eSTEEL 11\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003eMeasure the room first\u003c\/h3\u003e\n\u003cp\u003eOutput follows the volume of the room rather than its floor, so work in cubic feet: length times\nwidth times height, all in feet. Uninsulated brick, tile or glass pulls heat out of a room faster\nthan a timber wall does, and HUUM's manual answers that by counting an extra 3.3 cubic feet for\nevery square foot of such wall. HUUM does not say whether a glass door counts, so counting it is\nthe cautious choice. If the number lands between two packages, our\n\u003ca href=\"\/pages\/find-your-sauna-heater\"\u003eheater finder\u003c\/a\u003e walks the room with you, or call and we\nwill do it together.\u003c\/p\u003e\n\u003ch3\u003eWhat moves when you change size\u003c\/h3\u003e\n\u003cp\u003eOutput moves with the size and so does the circuit, which is the part people budget late. This\npackage is rated for 106 to 177 cubic feet on a 240 volt supply and 106 to 159 on 208 volts,\nand the breaker and cable HUUM calls for at both voltages are in the specifications below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"heater\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eThe heater\u003c\/p\u003e\n\u003ch2\u003eWhat the STEEL Mini 4 is rated for\u003c\/h2\u003e\n\u003cp class=\"hsteelmini4pkg-lead\"\u003eHUUM rates the \u003ca href=\"\/products\/huum-steel-mini-4-electric-sauna-heater\"\u003eSTEEL Mini 4 heater\u003c\/a\u003e for 106 to 177 cubic feet at 240 volts. It hangs on a wall bracket, and it measures 12.2 in wide, 6.3 in deep and 38.4 in tall. HUUM gives its stone capacity as about 132 lb (60 kg), and \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eits olivine diabase stone\u003c\/a\u003e comes in 33 pound boxes, so this package carries 4 of them.\u003c\/p\u003e\n\u003cp\u003eThe STEEL Mini hangs on a wall bracket in a stainless enclosure, and it is the lightest circuit in the HUUM range, which it shares with the CLIFF Mini 4. Against that heater the choice is mostly the look.\u003c\/p\u003e\n\u003cp\u003eOn a 208 volt supply the same heater makes 2.85 kW and is rated for 106 to 159 cubic feet.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteelmini4pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-mini-4-studio_bee5b36b-3d13-41f0-aff2-6413af6ae293.jpg?width=1200\" alt=\"HUUM STEEL Mini 4 sauna heater\" width=\"2048\" height=\"2048\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe heater in the package, before the stone goes in.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4pkg-tinted\" id=\"control\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eThe control\u003c\/p\u003e\n\u003ch2\u003eWhich UKU comes in the package\u003c\/h2\u003e\n\u003cp class=\"hsteelmini4pkg-lead\"\u003ePick the control at the top of this page and the price moves with it. Every choice is a HUUM UKU: the same control, in a different panel.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/huum-uku-local-sauna-heater-control\"\u003eUKU Local\u003c\/a\u003e runs the heater from the wall panel. The \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eUKU Wi-Fi\u003c\/a\u003e adds the phone app, so the room can be hot when you get home. Local comes in black or thermo-ash wood. Wi-Fi adds black glass, mirror and gold.\u003c\/p\u003e\n\u003cp\u003eThe control unit itself mounts outside the hot room, and the panel goes on the wall where you want it. HUUM's manual sets the cable runs, and the cables it needs are in the box.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteelmini4pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-uku-control-panels-and-app_bd2e8867-f7f6-47c5-ab45-6451a3279191.jpg?width=1200\" alt=\"HUUM UKU control panels and app, the control included in this package\" width=\"2000\" height=\"1559\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe UKU panel finishes, and the app the Wi-Fi control adds.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"electrical\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eThe circuit\u003c\/p\u003e\n\u003ch2\u003e14.58 amps at 240 volts\u003c\/h2\u003e\n\u003cp class=\"hsteelmini4pkg-lead\"\u003eThe STEEL Mini 4 draws 14.58 amps at 240 volts, and HUUM's manual calls for a 20 amp breaker on 12 AWG cable. It is hardwired, not plugged in.\u003c\/p\u003e\n\u003cp\u003eA sauna heater is a continuous load, so the National Electrical Code can call for a larger breaker and heavier conductors than the manual's figure, and local amendments differ. Your licensed electrician sizes the circuit and pulls the permit.\u003c\/p\u003e\n\u003ch3\u003eWhy this page quotes two voltages\u003c\/h3\u003e\n\u003cp\u003eThere is nothing to pick here, and nothing on this page selects it. Almost every US home is supplied at 240 volts, while many commercial buildings and some apartment blocks are supplied at 208. It is the same heater and the same part number either way: on 208 volts it draws less and makes less heat, so HUUM publishes a separate output and a smaller room range for it, and the specifications below list both. Your electrician reads the panel and tells you which row applies. At 208 volts HUUM gives 12.5 amps and 20 amps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4pkg-tinted\" id=\"stones\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eStone\u003c\/p\u003e\n\u003ch2\u003eThe stone is already in the order\u003c\/h2\u003e\n\u003cp class=\"hsteelmini4pkg-lead\"\u003eHUUM gives the STEEL Mini 4 a stone capacity of about 132 lb (60 kg). Its\n\u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eolivine diabase\u003c\/a\u003e is sold in 33 pound boxes, so this package carries 4 of\nthem, which covers it.\u003c\/p\u003e\n\u003ch3\u003eWhy the grade is on the label\u003c\/h3\u003e\n\u003cp\u003eThis heater takes stone 1.2 to 1.9 inches (3 to 5 cm) across, which is the range HUUM's manual publishes for it. The\nsize matters because the same manual asks for the stones to be laid loosely enough for air to move\nbetween them, and for the heating elements not to show once the bed is filled. HUUM prints a\nwarning that a too sparsely filled stone container is a fire hazard, so the bed has to be both\nfull and open, and stone outside the published range makes that harder to get right.\u003c\/p\u003e\n\u003ch3\u003eHow the stone travels\u003c\/h3\u003e\n\u003cp\u003eStone is heavy and it is the line most quotes get wrong. In this package it goes on the same\norder as the heater and carries no shipping charge to the contiguous 48 states; ordered on its own\nit is charged per box. That is the difference worth checking if you are weighing the package\nagainst the parts.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteelmini4pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-sauna-stones-olivine_eb67c44f-f019-4c4b-9a62-2a1de5182677_abff64f8-854a-4a0a-850a-f8056382e6b6.jpg?width=1200\" alt=\"HUUM olivine diabase sauna stones, included in the package\" width=\"2048\" height=\"1365\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eHUUM olivine diabase, the stone counted into this package.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"specs\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eSpecifications\u003c\/p\u003e\n\u003ch2\u003eWhat is in this package\u003c\/h2\u003e\n\u003cdiv class=\"hsteelmini4pkg-tw\"\u003e\u003ctable class=\"hsteelmini4pkg-spec\"\u003e\n\u003ccaption\u003eHUUM STEEL Mini 4 package reference\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater\u003c\/th\u003e\n\u003ctd\u003eHUUM STEEL Mini 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom at 240 V\u003c\/th\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 208 V\u003c\/th\u003e\n\u003ctd\u003e2.85 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom at 208 V\u003c\/th\u003e\n\u003ctd\u003e106 to 159 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCurrent at 240 V\u003c\/th\u003e\n\u003ctd\u003e14.58 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBreaker at 240 V\u003c\/th\u003e\n\u003ctd\u003e20 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable at 240 V\u003c\/th\u003e\n\u003ctd\u003e12 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBreaker at 208 V\u003c\/th\u003e\n\u003ctd\u003e20 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable at 208 V\u003c\/th\u003e\n\u003ctd\u003e12 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater size\u003c\/th\u003e\n\u003ctd\u003e12.2 x 6.3 x 38.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e32 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the side wall\u003c\/th\u003e\n\u003ctd\u003e2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum gap above\u003c\/th\u003e\n\u003ctd\u003e47.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone in the package\u003c\/th\u003e\n\u003ctd\u003e4 boxes, 132 lb (60 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl in the package\u003c\/th\u003e\n\u003ctd\u003eHUUM UKU, panel finish as selected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExtension box\u003c\/th\u003e\n\u003ctd\u003eNot needed at this output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eWall mounted with a special bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e16.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eEvery figure is HUUM's own, from the current US manual for this heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4pkg-tinted\" id=\"compare\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eThe alternatives\u003c\/p\u003e\n\u003ch2\u003eOther HUUM packages that cover a similar room\u003c\/h2\u003e\n\u003cp class=\"hsteelmini4pkg-lead\"\u003eA room of this size does not tie you to one heater. These HUUM packages have a rated range that overlaps the STEEL Mini 4. Overlapping is not the same as interchangeable: check your own cubic feet against each range before you switch, because HUUM ties the warranty to matching the heater to the room.\u003c\/p\u003e\n\u003cdiv class=\"hsteelmini4pkg-tw\"\u003e\u003ctable class=\"hsteelmini4pkg-ladder hsteelmini4pkg-rooms\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003cth\u003eStone included\u003c\/th\u003e\n\u003cth\u003eWhere it sits\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteelmini4pkg-kw\"\u003e\u003ca href=\"\/products\/huum-cliff-mini-4-sauna-heater-package\"\u003eCLIFF Mini 4\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003eWall mounted\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteelmini4pkg-on\"\u003e\n\u003ctd class=\"hsteelmini4pkg-kw\"\u003eSTEEL Mini 4 \u003cspan class=\"hsteelmini4pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003eWall mounted\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteelmini4pkg-kw\"\u003e\u003ca href=\"\/products\/huum-drop-4-sauna-heater-package\"\u003eDROP 4\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4.5 kW\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003eWall mounted\u003c\/td\u003e\n\u003ctd\u003e106 to 248 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch3\u003eReading the table\u003c\/h3\u003e\n\u003cp\u003eThese packages carry the same stone load and mount the same way, so the choice comes down to output against the room you measured.\u003c\/p\u003e\n\u003cp\u003eThe outputs, room ranges and mounting are HUUM's own figures from the current US manual for each\nheater. The box counts are ours, worked from the stone weight HUUM publishes and its 33 pound box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"crate\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n\u003ch2\u003eWhat arrives, and in how many boxes\u003c\/h2\u003e\n\u003cp class=\"hsteelmini4pkg-lead\"\u003eA package is three separate cartons rather than one, because the heater, the control and the stone are packed by HUUM as separate lines.\u003c\/p\u003e\n\u003cul class=\"hsteelmini4pkg-chk\"\u003e\n\u003cli\u003eThe heater, in HUUM's own carton with its fixings and manual\u003c\/li\u003e\n\u003cli\u003eThe UKU control, panel and module, in a separate carton\u003c\/li\u003e\n\u003cli\u003e4 boxes of stone at 33 pounds each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNothing else is needed to fire it once the electrician has made the connection. The rail, the drip tray and the embedding flange HUUM lists for this heater are optional and ordered separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteelmini4pkg-tinted\" id=\"delivery\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eDelivery\u003c\/p\u003e\n\u003ch2\u003eHow the package arrives\u003c\/h2\u003e\n\u003cp class=\"hsteelmini4pkg-lead\"\u003eThe heater ships palletized by freight. The carrier calls to book a window, someone has to sign for it, and the handover is curbside rather than inside, so plan on two people to move it. The stone travels in its own boxes, 4 of them at 33 pounds each, and the control comes in its own carton. They can arrive on different days.\u003c\/p\u003e\n\u003cp\u003eShipping is free to the contiguous 48 states. We do not ship HUUM to Alaska, Hawaii or Puerto Rico. Buying the stone inside a package is what keeps it free; ordered on its own it is charged per box.\u003c\/p\u003e\n\u003cp\u003eLead time runs about 7 to 14 days from order. Inspect the pallet before you sign, note any damage on the delivery paperwork, and tell us within 48 hours of delivery if anything is damaged, with photographs, so we can file the claim. Full terms are on our \u003ca href=\"\/pages\/huum-shipping-policy\"\u003eHUUM shipping policy\u003c\/a\u003e, with the \u003ca href=\"\/pages\/huum-warranty-policy\"\u003ewarranty\u003c\/a\u003e and \u003ca href=\"\/pages\/huum-return-policy\"\u003ereturns\u003c\/a\u003e pages alongside it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\"\u003eQuestions\u003c\/p\u003e\n\u003ch2\u003eQuestions buyers ask about this package\u003c\/h2\u003e\n\u003cdiv class=\"hsteelmini4pkg-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is in the HUUM STEEL Mini 4 package?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eThe STEEL Mini 4 heater, a HUUM UKU control in the panel finish you pick, and 4 boxes of HUUM olivine diabase stone, 132 lb (60 kg).\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the package cost more than buying the parts on their own?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eNo. The price is the component prices added together at the manufacturer's advertised prices, with nothing added for bundling.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat size room does the STEEL Mini 4 heat?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eHUUM rates it for 106 to 177 cubic feet at 240 volts, and 106 to 159 cubic feet at 208 volts. Add 3.3 cubic feet for every square foot of uninsulated brick, tile or glass in the room.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I choose a different control?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eYes. The package includes a UKU because that is the control HUUM was certified with, and you choose the panel above. HUUM's manual allows any certified sauna control panel, so if you already own one, buy the heater on its own instead.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many circuits does the STEEL Mini 4 need?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eOne. HUUM's manual calls for a 20 amp breaker on 12 AWG cable, hardwired by a licensed electrician.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the stone included, and is it enough?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eYes. HUUM gives the stone capacity as about 132 lb (60 kg), and stone comes in 33 pound boxes, so the package carries 4. Fill the heater as the manual shows: a sparsely filled stone bed is a fire hazard, and the heater must not be switched on until it is properly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install it myself?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eThe heater is hardwired, so a licensed electrician makes the connection. Doing it yourself puts the warranty at risk and usually fails inspection.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the STEEL Mini 4 listed for use in the United States?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eIt is listed by SGS, not by UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and it lists the STEEL Mini 4 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the package?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eHUUM's heater warranty runs 3 years in a private sauna and 1 year in commercial use. Heating elements are excluded, which is why we stock them as \u003ca href=\"\/products\/huum-cliff-steel-heating-element\"\u003eservice parts\u003c\/a\u003e, and we file any claim for you.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the stone ship free with the package?\u003c\/summary\u003e\u003cdiv class=\"hsteelmini4pkg-fb\"\u003e\u003cp\u003eYes, to the contiguous 48 states. Inside a package the stone carries no shipping charge; ordered on its own it is charged per box. We do not ship HUUM to Alaska, Hawaii or Puerto Rico.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsteelmini4pkg-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsteelmini4pkg-c\"\u003e\n\u003cp class=\"hsteelmini4pkg-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the STEEL Mini 4 is the right output?\u003c\/h2\u003e\n\u003cp\u003eTell us the room size and how the walls are built, and we will size it with you before you order. This package carries the heater, the UKU control and the stone in one price, so the only decision left is the output, and we would rather talk you down a size than sell you the bigger one.\u003c\/p\u003e\n\u003cdiv class=\"hsteelmini4pkg-who\"\u003e\n\u003cimg class=\"hsteelmini4pkg-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsteelmini4pkg-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsteelmini4pkg-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"UKU Local, black","offer_id":53520482304367,"sku":"HUUM-PKG-STEELMINI4-LB","price":2958.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local, thermo-ash wood","offer_id":53520482337135,"sku":"HUUM-PKG-STEELMINI4-LW","price":3271.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, black","offer_id":53520482369903,"sku":"HUUM-PKG-STEELMINI4-WB","price":3220.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, thermo-ash wood","offer_id":53520482402671,"sku":"HUUM-PKG-STEELMINI4-WW","price":3533.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, black glass","offer_id":53520482435439,"sku":"HUUM-PKG-STEELMINI4-WG","price":3620.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, mirror","offer_id":53520482468207,"sku":"HUUM-PKG-STEELMINI4-WMR","price":3883.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, gold","offer_id":53520482500975,"sku":"HUUM-PKG-STEELMINI4-WGD","price":3883.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-mini-4-sauna-heater-package-black-control.jpg?v=1790665859"},{"product_id":"huum-steel-6-sauna-heater-package","title":"HUUM STEEL 6 Sauna Heater Package, 6 kW | UKU Control and Stones","description":"\u003cstyle\u003e.hsteel6pkg{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--body);line-height:1.65;letter-spacing:normal;-webkit-font-smoothing:antialiased;background:#fff}.hsteel6pkg *{box-sizing:border-box}.hsteel6pkg .hsteel6pkg-c img{margin:0 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td:first-child{position:sticky;left:0;z-index:1;background:#fff;box-shadow:inset 0 -1px 0 var(--rule),1px 0 0 var(--rule)}.hsteel6pkg table.cmp thead th:first-child{position:sticky;left:0;z-index:2;background:var(--fill)}@media screen and (max-width:560px){.hsteel6pkg .hsteel6pkg-ladder td:last-child::before{content:\"Nameplate draw:\\00a0\";font-weight:700;color:var(--ink)}}@media screen and (max-width:480px){.hsteel6pkg table.hsteel6pkg-spec th,.hsteel6pkg table.hsteel6pkg-spec td{display:block;width:auto}.hsteel6pkg table.hsteel6pkg-spec th{border-bottom:0;padding-bottom:0}}.hsteel6pkg .hsteel6pkg-vid .video-wrapper{position:absolute !important;inset:0;width:100%;height:100%;padding:0 !important;margin:0}.hsteel6pkg .hsteel6pkg-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.hsteel6pkg .hsteel6pkg-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.hsteel6pkg 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td:last-child::before{content:\"Output:\\00a0\"}}.hsteel6pkg .hsteel6pkg-tw + p,.hsteel6pkg .hsteel6pkg-tw + h3,.hsteel6pkg .hsteel6pkg-warn + p,.hsteel6pkg .hsteel6pkg-warn + h3,.hsteel6pkg .hsteel6pkg-more + p{margin-top:24px}.hsteel6pkg .hsteel6pkg-vid iframe{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark)}\u003c\/style\u003e\n\u003cdiv class=\"hsteel6pkg\"\u003e\n\u003csection id=\"overview\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n\u003cdetails class=\"hsteel6pkg-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hsteel6pkg-ct\"\u003e13 sections\u003c\/span\u003e\u003c\/summary\u003e\u003col\u003e\n\u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#video\"\u003eVideo\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fit\"\u003eWill it fit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#heater\"\u003eThe heater\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#control\"\u003eThe control\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#electrical\"\u003eBreaker and wire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#stones\"\u003eStone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specs\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#compare\"\u003eHow it compares\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#crate\"\u003eWhat you get\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#delivery\"\u003eDelivery\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eQuestions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#order\"\u003eOrder\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/details\u003e\n\u003ch2\u003eHUUM STEEL 6 Sauna Heater Package\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003eA HUUM heater carton holds the heater and its fixings. No control, no stone. This package is the STEEL 6 with a UKU control and the 10 boxes of stone HUUM's manual asks for, so nothing is missing when the electrician arrives.\u003c\/p\u003e\n\u003cul class=\"hsteel6pkg-chk\"\u003e\n\u003cli\u003eThe HUUM STEEL 6 sauna heater, 6 kW\u003c\/li\u003e\n\u003cli\u003eA HUUM UKU control, in the panel finish you pick above\u003c\/li\u003e\n\u003cli\u003e10 boxes of HUUM olivine diabase stone, 330 lb (150 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe package price is the component prices added together, at the manufacturer's own advertised prices. Nothing is added for bundling them, and there is no inflated compare at price. Buy the parts separately from us and you pay the same.\u003c\/p\u003e\n\u003cdiv class=\"hsteel6pkg-stat3\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteel6pkg-lbl\"\u003eOutput at 240 volts\u003c\/p\u003e\n\u003cp class=\"hsteel6pkg-big\"\u003e6 kW\u003c\/p\u003e\n\u003cp\u003eHUUM's rating on a 240 volt supply. On 208 volts the same heater makes 4.8 kW.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteel6pkg-lbl\"\u003eRoom it is rated for\u003c\/p\u003e\n\u003cp class=\"hsteel6pkg-big\"\u003e177 to 318 cu. ft.\u003c\/p\u003e\n\u003cp\u003eLength times width times height, with 3.3 cubic feet added for every square foot of uninsulated brick, tile or glass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteel6pkg-lbl\"\u003eStone included\u003c\/p\u003e\n\u003cp class=\"hsteel6pkg-big\"\u003e10 boxes\u003c\/p\u003e\n\u003cp\u003eHUUM olivine diabase in 33 pound boxes, covering the capacity HUUM publishes for this heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6pkg-tinted\" id=\"video\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eWatch\u003c\/p\u003e\n\u003cdiv class=\"hsteel6pkg-vidrow\"\u003e\n\u003cdiv class=\"hsteel6pkg-vid\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/_XxhQ8VFWJk\" title=\"Building it into the bench, HUUM\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv class=\"hsteel6pkg-vidbody\"\u003e\n\u003ch2\u003eBuilding it into the bench\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003eThe optional embedding flange, from bench cut-out to finished edge.\u003c\/p\u003e\n\u003cp\u003eHUUM filmed this one itself. Its heater installation films are made for Europe and show European wiring, so we do not use them; the sauna side of the job is the same, but the electrical side is not.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"fit\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eSizing\u003c\/p\u003e\n\u003ch2\u003eWhich STEEL package suits your room\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003eEvery package in this series carries the same seven control choices and the same\ngrade of stone. What separates them is output, the room each one is rated for, and the stone load. There are 4 of them.\u003c\/p\u003e\n\u003cdiv class=\"hsteel6pkg-tw\"\u003e\u003ctable class=\"hsteel6pkg-ladder hsteel6pkg-rooms\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eStone included\u003c\/th\u003e\n\u003cth\u003eRated room at 240 V\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-mini-4-sauna-heater-package\"\u003eSTEEL Mini 4\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteel6pkg-on\"\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003eSTEEL 6 \u003cspan class=\"hsteel6pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-9-sauna-heater-package\"\u003eSTEEL 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-11-sauna-heater-package\"\u003eSTEEL 11\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003eMeasure the room first\u003c\/h3\u003e\n\u003cp\u003eOutput follows the volume of the room rather than its floor, so work in cubic feet: length times\nwidth times height, all in feet. Uninsulated brick, tile or glass pulls heat out of a room faster\nthan a timber wall does, and HUUM's manual answers that by counting an extra 3.3 cubic feet for\nevery square foot of such wall. HUUM does not say whether a glass door counts, so counting it is\nthe cautious choice. If the number lands between two packages, our\n\u003ca href=\"\/pages\/find-your-sauna-heater\"\u003eheater finder\u003c\/a\u003e walks the room with you, or call and we\nwill do it together.\u003c\/p\u003e\n\u003ch3\u003eWhat moves when you change size\u003c\/h3\u003e\n\u003cp\u003eOutput moves with the size and so does the circuit, which is the part people budget late. This\npackage is rated for 177 to 318 cubic feet on a 240 volt supply and 142 to 248 on 208 volts,\nand the breaker and cable HUUM calls for at both voltages are in the specifications below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6pkg-tinted\" id=\"heater\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eThe heater\u003c\/p\u003e\n\u003ch2\u003eWhat the STEEL 6 is rated for\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003eHUUM rates the \u003ca href=\"\/products\/huum-steel-6-electric-sauna-heater\"\u003eSTEEL 6 heater\u003c\/a\u003e for 177 to 318 cubic feet at 240 volts. It stands on the floor in a stainless enclosure, and it measures 12.6 in wide, 12.6 in deep and 38.4 in tall. HUUM gives its stone capacity as about 330 lb (150 kg), and \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eits olivine diabase stone\u003c\/a\u003e comes in 33 pound boxes, so this package carries 10 of them.\u003c\/p\u003e\n\u003cp\u003eThe STEEL wraps its stone in a stainless enclosure. Against a CLIFF of the same output it carries twice the stone, and on the 9 and the 11 it needs far less room to the side wall.\u003c\/p\u003e\n\u003cp\u003eOn a 208 volt supply the same heater makes 4.8 kW and is rated for 142 to 248 cubic feet.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteel6pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-6-studio_a03995c4-29ca-4f8e-89bc-2d459eb4ca5e.jpg?width=1200\" alt=\"HUUM STEEL 6 sauna heater\" width=\"2048\" height=\"2048\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe heater in the package, before the stone goes in.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"control\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eThe control\u003c\/p\u003e\n\u003ch2\u003eWhich UKU comes in the package\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003ePick the control at the top of this page and the price moves with it. Every choice is a HUUM UKU: the same control, in a different panel.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/huum-uku-local-sauna-heater-control\"\u003eUKU Local\u003c\/a\u003e runs the heater from the wall panel. The \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eUKU Wi-Fi\u003c\/a\u003e adds the phone app, so the room can be hot when you get home. Local comes in black or thermo-ash wood. Wi-Fi adds black glass, mirror and gold.\u003c\/p\u003e\n\u003cp\u003eThe control unit itself mounts outside the hot room, and the panel goes on the wall where you want it. HUUM's manual sets the cable runs, and the cables it needs are in the box.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteel6pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-uku-control-panels-and-app_be3f6fa2-b1c8-4df8-898c-54f38f6c56d5.jpg?width=1200\" alt=\"HUUM UKU control panels and app, the control included in this package\" width=\"2000\" height=\"1559\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe UKU panel finishes, and the app the Wi-Fi control adds.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6pkg-tinted\" id=\"electrical\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eThe circuit\u003c\/p\u003e\n\u003ch2\u003e25 amps at 240 volts\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003eThe STEEL 6 draws 25 amps at 240 volts, and HUUM's manual calls for a 30 amp breaker on 10 AWG cable. It is hardwired, not plugged in.\u003c\/p\u003e\n\u003cp\u003eA sauna heater is a continuous load, so the National Electrical Code can call for a larger breaker and heavier conductors than the manual's figure, and local amendments differ. Your licensed electrician sizes the circuit and pulls the permit. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n\u003ch3\u003eWhy this page quotes two voltages\u003c\/h3\u003e\n\u003cp\u003eThere is nothing to pick here, and nothing on this page selects it. Almost every US home is supplied at 240 volts, while many commercial buildings and some apartment blocks are supplied at 208. It is the same heater and the same part number either way: on 208 volts it draws less and makes less heat, so HUUM publishes a separate output and a smaller room range for it, and the specifications below list both. Your electrician reads the panel and tells you which row applies. At 208 volts HUUM gives 21.63 amps and 30 amps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"stones\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eStone\u003c\/p\u003e\n\u003ch2\u003eThe stone is already in the order\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003eHUUM gives the STEEL 6 a stone capacity of about 330 lb (150 kg). Its\n\u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eolivine diabase\u003c\/a\u003e is sold in 33 pound boxes, so this package carries 10 of\nthem, which covers it.\u003c\/p\u003e\n\u003ch3\u003eWhy the grade is on the label\u003c\/h3\u003e\n\u003cp\u003eThis heater takes stone 1.2 to 1.9 inches (3 to 5 cm) across, which is the range HUUM's manual publishes for it. The\nsize matters because the same manual asks for the stones to be laid loosely enough for air to move\nbetween them, and for the heating elements not to show once the bed is filled. HUUM prints a\nwarning that a too sparsely filled stone container is a fire hazard, so the bed has to be both\nfull and open, and stone outside the published range makes that harder to get right.\u003c\/p\u003e\n\u003ch3\u003eHow the stone travels\u003c\/h3\u003e\n\u003cp\u003eStone is heavy and it is the line most quotes get wrong. In this package it goes on the same\norder as the heater and carries no shipping charge to the contiguous 48 states; ordered on its own\nit is charged per box. That is the difference worth checking if you are weighing the package\nagainst the parts.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteel6pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-sauna-stones-olivine_eb67c44f-f019-4c4b-9a62-2a1de5182677_f47cb7f3-ecb8-4d75-bc02-6d52e96d38cc.jpg?width=1200\" alt=\"HUUM olivine diabase sauna stones, included in the package\" width=\"2048\" height=\"1365\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eHUUM olivine diabase, the stone counted into this package.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6pkg-tinted\" id=\"specs\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eSpecifications\u003c\/p\u003e\n\u003ch2\u003eWhat is in this package\u003c\/h2\u003e\n\u003cdiv class=\"hsteel6pkg-tw\"\u003e\u003ctable class=\"hsteel6pkg-spec\"\u003e\n\u003ccaption\u003eHUUM STEEL 6 package reference\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater\u003c\/th\u003e\n\u003ctd\u003eHUUM STEEL 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom at 240 V\u003c\/th\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 208 V\u003c\/th\u003e\n\u003ctd\u003e4.8 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom at 208 V\u003c\/th\u003e\n\u003ctd\u003e142 to 248 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCurrent at 240 V\u003c\/th\u003e\n\u003ctd\u003e25 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBreaker at 240 V\u003c\/th\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable at 240 V\u003c\/th\u003e\n\u003ctd\u003e10 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBreaker at 208 V\u003c\/th\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable at 208 V\u003c\/th\u003e\n\u003ctd\u003e10 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater size\u003c\/th\u003e\n\u003ctd\u003e12.6 x 12.6 x 38.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e33 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the side wall\u003c\/th\u003e\n\u003ctd\u003e2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum gap above\u003c\/th\u003e\n\u003ctd\u003e47.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone in the package\u003c\/th\u003e\n\u003ctd\u003e10 boxes, 330 lb (150 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl in the package\u003c\/th\u003e\n\u003ctd\u003eHUUM UKU, panel finish as selected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExtension box\u003c\/th\u003e\n\u003ctd\u003eNot needed at this output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e16.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eEvery figure is HUUM's own, from the current US manual for this heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"compare\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eThe alternatives\u003c\/p\u003e\n\u003ch2\u003eOther HUUM packages that cover a similar room\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003eA room of this size does not tie you to one heater. These HUUM packages have a rated range that overlaps the STEEL 6. Those are the 5 closest of 11; the rest are in our \u003ca href=\"\/collections\/sauna-heater-packages\"\u003esauna heater packages\u003c\/a\u003e collection. Overlapping is not the same as interchangeable: check your own cubic feet against each range before you switch, because HUUM ties the warranty to matching the heater to the room.\u003c\/p\u003e\n\u003cdiv class=\"hsteel6pkg-tw\"\u003e\u003ctable class=\"hsteel6pkg-ladder hsteel6pkg-rooms\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003cth\u003eStone included\u003c\/th\u003e\n\u003cth\u003eWhere it sits\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-drop-4-sauna-heater-package\"\u003eDROP 4\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4.5 kW\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003eWall mounted\u003c\/td\u003e\n\u003ctd\u003e106 to 248 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-cliff-6-sauna-heater-package\"\u003eCLIFF 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003ctd\u003e5 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-drop-6-sauna-heater-package\"\u003eDROP 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003eWall mounted\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-hive-mini-6-sauna-heater-package\"\u003eHIVE Mini 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteel6pkg-on\"\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003eSTEEL 6 \u003cspan class=\"hsteel6pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-core-6-sauna-heater-package\"\u003eCORE 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e6.5 kW\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch3\u003eReading the stone column\u003c\/h3\u003e\n\u003cp\u003eTwo heaters of the same output can carry very different stone loads, and HUUM describes its large stone loads as the source of a gentle, long lasting steam. Neither way is better. Where there is a real tie breaker it is usually the last thing on the list, whether the heater hangs on the wall or stands on the floor, which is the Where it sits column.\u003c\/p\u003e\n\u003cp\u003eThe outputs, room ranges and mounting are HUUM's own figures from the current US manual for each\nheater. The box counts are ours, worked from the stone weight HUUM publishes and its 33 pound box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6pkg-tinted\" id=\"crate\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n\u003ch2\u003eWhat arrives, and in how many boxes\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003eA package is three separate cartons rather than one, because the heater, the control and the stone are packed by HUUM as separate lines.\u003c\/p\u003e\n\u003cul class=\"hsteel6pkg-chk\"\u003e\n\u003cli\u003eThe heater, in HUUM's own carton with its fixings and manual\u003c\/li\u003e\n\u003cli\u003eThe UKU control, panel and module, in a separate carton\u003c\/li\u003e\n\u003cli\u003e10 boxes of stone at 33 pounds each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNothing else is needed to fire it once the electrician has made the connection. The rail, the drip tray and the embedding flange HUUM lists for this heater are optional and ordered separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"delivery\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eDelivery\u003c\/p\u003e\n\u003ch2\u003eHow the package arrives\u003c\/h2\u003e\n\u003cp class=\"hsteel6pkg-lead\"\u003eThe heater ships palletized by freight. The carrier calls to book a window, someone has to sign for it, and the handover is curbside rather than inside, so plan on two people to move it. The stone travels in its own boxes, 10 of them at 33 pounds each, and the control comes in its own carton. They can arrive on different days.\u003c\/p\u003e\n\u003cp\u003eShipping is free to the contiguous 48 states. We do not ship HUUM to Alaska, Hawaii or Puerto Rico. Buying the stone inside a package is what keeps it free; ordered on its own it is charged per box.\u003c\/p\u003e\n\u003cp\u003eLead time runs about 7 to 14 days from order. Inspect the pallet before you sign, note any damage on the delivery paperwork, and tell us within 48 hours of delivery if anything is damaged, with photographs, so we can file the claim. Full terms are on our \u003ca href=\"\/pages\/huum-shipping-policy\"\u003eHUUM shipping policy\u003c\/a\u003e, with the \u003ca href=\"\/pages\/huum-warranty-policy\"\u003ewarranty\u003c\/a\u003e and \u003ca href=\"\/pages\/huum-return-policy\"\u003ereturns\u003c\/a\u003e pages alongside it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel6pkg-tinted\" id=\"faq\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\"\u003eQuestions\u003c\/p\u003e\n\u003ch2\u003eQuestions buyers ask about this package\u003c\/h2\u003e\n\u003cdiv class=\"hsteel6pkg-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is in the HUUM STEEL 6 package?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eThe STEEL 6 heater, a HUUM UKU control in the panel finish you pick, and 10 boxes of HUUM olivine diabase stone, 330 lb (150 kg).\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the package cost more than buying the parts on their own?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eNo. The price is the component prices added together at the manufacturer's advertised prices, with nothing added for bundling.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat size room does the STEEL 6 heat?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eHUUM rates it for 177 to 318 cubic feet at 240 volts, and 142 to 248 cubic feet at 208 volts. Add 3.3 cubic feet for every square foot of uninsulated brick, tile or glass in the room.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I choose a different control?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eYes. The package includes a UKU because that is the control HUUM was certified with, and you choose the panel above. HUUM's manual allows any certified sauna control panel, so if you already own one, buy the heater on its own instead.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many circuits does the STEEL 6 need?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eOne. HUUM's manual calls for a 30 amp breaker on 10 AWG cable, hardwired by a licensed electrician.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the stone included, and is it enough?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eYes. HUUM gives the stone capacity as about 330 lb (150 kg), and stone comes in 33 pound boxes, so the package carries 10. Fill the heater as the manual shows: a sparsely filled stone bed is a fire hazard, and the heater must not be switched on until it is properly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install it myself?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eThe heater is hardwired, so a licensed electrician makes the connection. Doing it yourself puts the warranty at risk and usually fails inspection.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the STEEL 6 listed for use in the United States?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eIt is listed by SGS, not by UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and it lists the STEEL 6 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the package?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eHUUM's heater warranty runs 3 years in a private sauna and 1 year in commercial use. Heating elements are excluded, which is why we stock them as \u003ca href=\"\/products\/huum-cliff-steel-heating-element\"\u003eservice parts\u003c\/a\u003e, and we file any claim for you.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the stone ship free with the package?\u003c\/summary\u003e\u003cdiv class=\"hsteel6pkg-fb\"\u003e\u003cp\u003eYes, to the contiguous 48 states. Inside a package the stone carries no shipping charge; ordered on its own it is charged per box. We do not ship HUUM to Alaska, Hawaii or Puerto Rico.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsteel6pkg-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsteel6pkg-c\"\u003e\n\u003cp class=\"hsteel6pkg-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the STEEL 6 is the right output?\u003c\/h2\u003e\n\u003cp\u003eTell us the room size and how the walls are built, and we will size it with you before you order. This package carries the heater, the UKU control and the stone in one price, so the only decision left is the output, and we would rather talk you down a size than sell you the bigger one.\u003c\/p\u003e\n\u003cdiv class=\"hsteel6pkg-who\"\u003e\n\u003cimg class=\"hsteel6pkg-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsteel6pkg-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsteel6pkg-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"UKU Local, black","offer_id":53520482566511,"sku":"HUUM-PKG-STEEL6-LB","price":3895.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local, thermo-ash wood","offer_id":53520482599279,"sku":"HUUM-PKG-STEEL6-LW","price":4208.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, black","offer_id":53520482632047,"sku":"HUUM-PKG-STEEL6-WB","price":4157.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, thermo-ash wood","offer_id":53520482664815,"sku":"HUUM-PKG-STEEL6-WW","price":4470.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, black glass","offer_id":53520482697583,"sku":"HUUM-PKG-STEEL6-WG","price":4557.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, mirror","offer_id":53520482730351,"sku":"HUUM-PKG-STEEL6-WMR","price":4820.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, gold","offer_id":53520482763119,"sku":"HUUM-PKG-STEEL6-WGD","price":4820.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-6-sauna-heater-package-black-control.jpg?v=1790665818"},{"product_id":"huum-steel-9-sauna-heater-package","title":"HUUM STEEL 9 Sauna Heater Package, 9 kW | UKU Control and Stones","description":"\u003cstyle\u003e.hsteel9pkg{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--body);line-height:1.65;letter-spacing:normal;-webkit-font-smoothing:antialiased;background:#fff}.hsteel9pkg *{box-sizing:border-box}.hsteel9pkg .hsteel9pkg-c img{margin:0 !important;border:0}.hsteel9pkg 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td:first-child{position:sticky;left:0;z-index:1;background:#fff;box-shadow:inset 0 -1px 0 var(--rule),1px 0 0 var(--rule)}.hsteel9pkg table.cmp thead th:first-child{position:sticky;left:0;z-index:2;background:var(--fill)}@media screen and (max-width:560px){.hsteel9pkg .hsteel9pkg-ladder td:last-child::before{content:\"Nameplate draw:\\00a0\";font-weight:700;color:var(--ink)}}@media screen and (max-width:480px){.hsteel9pkg table.hsteel9pkg-spec th,.hsteel9pkg table.hsteel9pkg-spec td{display:block;width:auto}.hsteel9pkg table.hsteel9pkg-spec th{border-bottom:0;padding-bottom:0}}.hsteel9pkg .hsteel9pkg-vid .video-wrapper{position:absolute !important;inset:0;width:100%;height:100%;padding:0 !important;margin:0}.hsteel9pkg .hsteel9pkg-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.hsteel9pkg .hsteel9pkg-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.hsteel9pkg .hsteel9pkg-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.hsteel9pkg .hsteel9pkg-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.hsteel9pkg .hsteel9pkg-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}.hsteel9pkg .hsteel9pkg-close p.hsteel9pkg-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hsteel9pkg .hsteel9pkg-stat3 a{color:var(--bright)}.hsteel9pkg .hsteel9pkg-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hsteel9pkg .hsteel9pkg-cmp thead a .hsteel9pkg-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hsteel9pkg .hsteel9pkg-ladder.hsteel9pkg-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hsteel9pkg .hsteel9pkg-ladder.hsteel9pkg-out td:last-child::before{content:\"Output:\\00a0\"}}.hsteel9pkg .hsteel9pkg-tw + p,.hsteel9pkg .hsteel9pkg-tw + h3,.hsteel9pkg .hsteel9pkg-warn + p,.hsteel9pkg .hsteel9pkg-warn + h3,.hsteel9pkg .hsteel9pkg-more + p{margin-top:24px}.hsteel9pkg .hsteel9pkg-vid iframe{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark)}\u003c\/style\u003e\n\u003cdiv class=\"hsteel9pkg\"\u003e\n\u003csection id=\"overview\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n\u003cdetails class=\"hsteel9pkg-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hsteel9pkg-ct\"\u003e13 sections\u003c\/span\u003e\u003c\/summary\u003e\u003col\u003e\n\u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#video\"\u003eVideo\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fit\"\u003eWill it fit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#heater\"\u003eThe heater\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#control\"\u003eThe control\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#electrical\"\u003eBreaker and wire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#stones\"\u003eStone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specs\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#compare\"\u003eHow it compares\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#crate\"\u003eWhat you get\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#delivery\"\u003eDelivery\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eQuestions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#order\"\u003eOrder\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/details\u003e\n\u003ch2\u003eHUUM STEEL 9 Sauna Heater Package\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003eA HUUM heater carton holds the heater and its fixings. No control, no stone. This package is the STEEL 9 with a UKU control and the 10 boxes of stone HUUM's manual asks for, so nothing is missing when the electrician arrives.\u003c\/p\u003e\n\u003cul class=\"hsteel9pkg-chk\"\u003e\n\u003cli\u003eThe HUUM STEEL 9 sauna heater, 9 kW\u003c\/li\u003e\n\u003cli\u003eA HUUM UKU control, in the panel finish you pick above\u003c\/li\u003e\n\u003cli\u003e10 boxes of HUUM olivine diabase stone, 330 lb (150 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe package price is the component prices added together, at the manufacturer's own advertised prices. Nothing is added for bundling them, and there is no inflated compare at price. Buy the parts separately from us and you pay the same.\u003c\/p\u003e\n\u003cdiv class=\"hsteel9pkg-stat3\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteel9pkg-lbl\"\u003eOutput at 240 volts\u003c\/p\u003e\n\u003cp class=\"hsteel9pkg-big\"\u003e9 kW\u003c\/p\u003e\n\u003cp\u003eHUUM's rating on a 240 volt supply. On 208 volts the same heater makes 7.1 kW.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteel9pkg-lbl\"\u003eRoom it is rated for\u003c\/p\u003e\n\u003cp class=\"hsteel9pkg-big\"\u003e283 to 460 cu. ft.\u003c\/p\u003e\n\u003cp\u003eLength times width times height, with 3.3 cubic feet added for every square foot of uninsulated brick, tile or glass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteel9pkg-lbl\"\u003eStone included\u003c\/p\u003e\n\u003cp class=\"hsteel9pkg-big\"\u003e10 boxes\u003c\/p\u003e\n\u003cp\u003eHUUM olivine diabase in 33 pound boxes, covering the capacity HUUM publishes for this heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9pkg-tinted\" id=\"video\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eWatch\u003c\/p\u003e\n\u003cdiv class=\"hsteel9pkg-vidrow\"\u003e\n\u003cdiv class=\"hsteel9pkg-vid\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/_XxhQ8VFWJk\" title=\"Building it into the bench, HUUM\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv class=\"hsteel9pkg-vidbody\"\u003e\n\u003ch2\u003eBuilding it into the bench\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003eThe optional embedding flange, from bench cut-out to finished edge.\u003c\/p\u003e\n\u003cp\u003eHUUM filmed this one itself. Its heater installation films are made for Europe and show European wiring, so we do not use them; the sauna side of the job is the same, but the electrical side is not.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"fit\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eSizing\u003c\/p\u003e\n\u003ch2\u003eWhich STEEL package suits your room\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003eEvery package in this series carries the same seven control choices and the same\ngrade of stone. What separates them is output, the room each one is rated for, and the stone load. There are 4 of them.\u003c\/p\u003e\n\u003cdiv class=\"hsteel9pkg-tw\"\u003e\u003ctable class=\"hsteel9pkg-ladder hsteel9pkg-rooms\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eStone included\u003c\/th\u003e\n\u003cth\u003eRated room at 240 V\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-mini-4-sauna-heater-package\"\u003eSTEEL Mini 4\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-6-sauna-heater-package\"\u003eSTEEL 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteel9pkg-on\"\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003eSTEEL 9 \u003cspan class=\"hsteel9pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-11-sauna-heater-package\"\u003eSTEEL 11\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003eMeasure the room first\u003c\/h3\u003e\n\u003cp\u003eOutput follows the volume of the room rather than its floor, so work in cubic feet: length times\nwidth times height, all in feet. Uninsulated brick, tile or glass pulls heat out of a room faster\nthan a timber wall does, and HUUM's manual answers that by counting an extra 3.3 cubic feet for\nevery square foot of such wall. HUUM does not say whether a glass door counts, so counting it is\nthe cautious choice. If the number lands between two packages, our\n\u003ca href=\"\/pages\/find-your-sauna-heater\"\u003eheater finder\u003c\/a\u003e walks the room with you, or call and we\nwill do it together.\u003c\/p\u003e\n\u003ch3\u003eWhat moves when you change size\u003c\/h3\u003e\n\u003cp\u003eOutput moves with the size and so does the circuit, which is the part people budget late. This\npackage is rated for 283 to 460 cubic feet on a 240 volt supply and 212 to 354 on 208 volts,\nand the breaker and cable HUUM calls for at both voltages are in the specifications below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9pkg-tinted\" id=\"heater\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eThe heater\u003c\/p\u003e\n\u003ch2\u003eWhat the STEEL 9 is rated for\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003eHUUM rates the \u003ca href=\"\/products\/huum-steel-9-electric-sauna-heater\"\u003eSTEEL 9 heater\u003c\/a\u003e for 283 to 460 cubic feet at 240 volts. It stands on the floor in a stainless enclosure, and it measures 12.6 in wide, 12.6 in deep and 38.4 in tall. HUUM gives its stone capacity as about 330 lb (150 kg), and \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eits olivine diabase stone\u003c\/a\u003e comes in 33 pound boxes, so this package carries 10 of them.\u003c\/p\u003e\n\u003cp\u003eThe STEEL wraps its stone in a stainless enclosure. Against a CLIFF of the same output it carries twice the stone, and on the 9 and the 11 it needs far less room to the side wall.\u003c\/p\u003e\n\u003cp\u003eOn a 208 volt supply the same heater makes 7.1 kW and is rated for 212 to 354 cubic feet.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteel9pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-9-studio_e9771aa7-8d4e-463f-a556-99b46e5b4613.jpg?width=1200\" alt=\"HUUM STEEL 9 sauna heater\" width=\"2048\" height=\"2048\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe heater in the package, before the stone goes in.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"control\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eThe control\u003c\/p\u003e\n\u003ch2\u003eWhich UKU comes in the package\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003ePick the control at the top of this page and the price moves with it. Every choice is a HUUM UKU: the same control, in a different panel.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/huum-uku-local-sauna-heater-control\"\u003eUKU Local\u003c\/a\u003e runs the heater from the wall panel. The \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eUKU Wi-Fi\u003c\/a\u003e adds the phone app, so the room can be hot when you get home. Local comes in black or thermo-ash wood. Wi-Fi adds black glass, mirror and gold.\u003c\/p\u003e\n\u003cp\u003eThe control unit itself mounts outside the hot room, and the panel goes on the wall where you want it. HUUM's manual sets the cable runs, and the cables it needs are in the box.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteel9pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-uku-control-panels-and-app_8fd5b742-c0b0-4617-8180-5d31746236ad.jpg?width=1200\" alt=\"HUUM UKU control panels and app, the control included in this package\" width=\"2000\" height=\"1559\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe UKU panel finishes, and the app the Wi-Fi control adds.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9pkg-tinted\" id=\"electrical\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eThe circuit\u003c\/p\u003e\n\u003ch2\u003e37.5 amps at 240 volts\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003eThe STEEL 9 draws 37.5 amps at 240 volts, and HUUM's manual calls for a 50 amp breaker on 8 AWG cable. It is hardwired, not plugged in.\u003c\/p\u003e\n\u003cp\u003eA sauna heater is a continuous load, so the National Electrical Code can call for a larger breaker and heavier conductors than the manual's figure, and local amendments differ. Your licensed electrician sizes the circuit and pulls the permit. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n\u003ch3\u003eWhy this page quotes two voltages\u003c\/h3\u003e\n\u003cp\u003eThere is nothing to pick here, and nothing on this page selects it. Almost every US home is supplied at 240 volts, while many commercial buildings and some apartment blocks are supplied at 208. It is the same heater and the same part number either way: on 208 volts it draws less and makes less heat, so HUUM publishes a separate output and a smaller room range for it, and the specifications below list both. Your electrician reads the panel and tells you which row applies. At 208 volts HUUM gives 32.45 amps and 40 amps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"stones\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eStone\u003c\/p\u003e\n\u003ch2\u003eThe stone is already in the order\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003eHUUM gives the STEEL 9 a stone capacity of about 330 lb (150 kg). Its\n\u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eolivine diabase\u003c\/a\u003e is sold in 33 pound boxes, so this package carries 10 of\nthem, which covers it.\u003c\/p\u003e\n\u003ch3\u003eWhy the grade is on the label\u003c\/h3\u003e\n\u003cp\u003eThis heater takes stone 1.2 to 1.9 inches (3 to 5 cm) across, which is the range HUUM's manual publishes for it. The\nsize matters because the same manual asks for the stones to be laid loosely enough for air to move\nbetween them, and for the heating elements not to show once the bed is filled. HUUM prints a\nwarning that a too sparsely filled stone container is a fire hazard, so the bed has to be both\nfull and open, and stone outside the published range makes that harder to get right.\u003c\/p\u003e\n\u003ch3\u003eHow the stone travels\u003c\/h3\u003e\n\u003cp\u003eStone is heavy and it is the line most quotes get wrong. In this package it goes on the same\norder as the heater and carries no shipping charge to the contiguous 48 states; ordered on its own\nit is charged per box. That is the difference worth checking if you are weighing the package\nagainst the parts.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteel9pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-sauna-stones-olivine_eb67c44f-f019-4c4b-9a62-2a1de5182677_cfc52fe2-9802-4f2e-8181-e52e88511450.jpg?width=1200\" alt=\"HUUM olivine diabase sauna stones, included in the package\" width=\"2048\" height=\"1365\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eHUUM olivine diabase, the stone counted into this package.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9pkg-tinted\" id=\"specs\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eSpecifications\u003c\/p\u003e\n\u003ch2\u003eWhat is in this package\u003c\/h2\u003e\n\u003cdiv class=\"hsteel9pkg-tw\"\u003e\u003ctable class=\"hsteel9pkg-spec\"\u003e\n\u003ccaption\u003eHUUM STEEL 9 package reference\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater\u003c\/th\u003e\n\u003ctd\u003eHUUM STEEL 9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom at 240 V\u003c\/th\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 208 V\u003c\/th\u003e\n\u003ctd\u003e7.1 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom at 208 V\u003c\/th\u003e\n\u003ctd\u003e212 to 354 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCurrent at 240 V\u003c\/th\u003e\n\u003ctd\u003e37.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBreaker at 240 V\u003c\/th\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable at 240 V\u003c\/th\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBreaker at 208 V\u003c\/th\u003e\n\u003ctd\u003e40 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable at 208 V\u003c\/th\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater size\u003c\/th\u003e\n\u003ctd\u003e12.6 x 12.6 x 38.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e33 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the side wall\u003c\/th\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum gap above\u003c\/th\u003e\n\u003ctd\u003e47.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone in the package\u003c\/th\u003e\n\u003ctd\u003e10 boxes, 330 lb (150 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl in the package\u003c\/th\u003e\n\u003ctd\u003eHUUM UKU, panel finish as selected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExtension box\u003c\/th\u003e\n\u003ctd\u003eNot needed at this output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e20.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eEvery figure is HUUM's own, from the current US manual for this heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"compare\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eThe alternatives\u003c\/p\u003e\n\u003ch2\u003eOther HUUM packages that cover a similar room\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003eA room of this size does not tie you to one heater. These HUUM packages have a rated range that overlaps the STEEL 9. Those are the 5 closest of 15; the rest are in our \u003ca href=\"\/collections\/sauna-heater-packages\"\u003esauna heater packages\u003c\/a\u003e collection. Overlapping is not the same as interchangeable: check your own cubic feet against each range before you switch, because HUUM ties the warranty to matching the heater to the room.\u003c\/p\u003e\n\u003cdiv class=\"hsteel9pkg-tw\"\u003e\u003ctable class=\"hsteel9pkg-ladder hsteel9pkg-rooms\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003cth\u003eStone included\u003c\/th\u003e\n\u003cth\u003eWhere it sits\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-drop-7-sauna-heater-package\"\u003eDROP 7\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e7.5 kW\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003eWall mounted\u003c\/td\u003e\n\u003ctd\u003e248 to 389 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-cliff-9-sauna-heater-package\"\u003eCLIFF 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e5 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-drop-9-sauna-heater-package\"\u003eDROP 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003eWall mounted\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-hive-mini-9-sauna-heater-package\"\u003eHIVE Mini 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-core-9-sauna-heater-package\"\u003eCORE 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteel9pkg-on\"\u003e\n\u003ctd class=\"hsteel9pkg-kw\"\u003eSTEEL 9 \u003cspan class=\"hsteel9pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch3\u003eReading the stone column\u003c\/h3\u003e\n\u003cp\u003eTwo heaters of the same output can carry very different stone loads, and HUUM describes its large stone loads as the source of a gentle, long lasting steam. Neither way is better. Where there is a real tie breaker it is usually the last thing on the list, whether the heater hangs on the wall or stands on the floor, which is the Where it sits column.\u003c\/p\u003e\n\u003cp\u003eThe outputs, room ranges and mounting are HUUM's own figures from the current US manual for each\nheater. The box counts are ours, worked from the stone weight HUUM publishes and its 33 pound box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9pkg-tinted\" id=\"crate\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n\u003ch2\u003eWhat arrives, and in how many boxes\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003eA package is three separate cartons rather than one, because the heater, the control and the stone are packed by HUUM as separate lines.\u003c\/p\u003e\n\u003cul class=\"hsteel9pkg-chk\"\u003e\n\u003cli\u003eThe heater, in HUUM's own carton with its fixings and manual\u003c\/li\u003e\n\u003cli\u003eThe UKU control, panel and module, in a separate carton\u003c\/li\u003e\n\u003cli\u003e10 boxes of stone at 33 pounds each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNothing else is needed to fire it once the electrician has made the connection. The rail, the drip tray and the embedding flange HUUM lists for this heater are optional and ordered separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"delivery\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eDelivery\u003c\/p\u003e\n\u003ch2\u003eHow the package arrives\u003c\/h2\u003e\n\u003cp class=\"hsteel9pkg-lead\"\u003eThe heater ships palletized by freight. The carrier calls to book a window, someone has to sign for it, and the handover is curbside rather than inside, so plan on two people to move it. The stone travels in its own boxes, 10 of them at 33 pounds each, and the control comes in its own carton. They can arrive on different days.\u003c\/p\u003e\n\u003cp\u003eShipping is free to the contiguous 48 states. We do not ship HUUM to Alaska, Hawaii or Puerto Rico. Buying the stone inside a package is what keeps it free; ordered on its own it is charged per box.\u003c\/p\u003e\n\u003cp\u003eLead time runs about 7 to 14 days from order. Inspect the pallet before you sign, note any damage on the delivery paperwork, and tell us within 48 hours of delivery if anything is damaged, with photographs, so we can file the claim. Full terms are on our \u003ca href=\"\/pages\/huum-shipping-policy\"\u003eHUUM shipping policy\u003c\/a\u003e, with the \u003ca href=\"\/pages\/huum-warranty-policy\"\u003ewarranty\u003c\/a\u003e and \u003ca href=\"\/pages\/huum-return-policy\"\u003ereturns\u003c\/a\u003e pages alongside it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel9pkg-tinted\" id=\"faq\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\"\u003eQuestions\u003c\/p\u003e\n\u003ch2\u003eQuestions buyers ask about this package\u003c\/h2\u003e\n\u003cdiv class=\"hsteel9pkg-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is in the HUUM STEEL 9 package?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eThe STEEL 9 heater, a HUUM UKU control in the panel finish you pick, and 10 boxes of HUUM olivine diabase stone, 330 lb (150 kg).\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the package cost more than buying the parts on their own?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eNo. The price is the component prices added together at the manufacturer's advertised prices, with nothing added for bundling.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat size room does the STEEL 9 heat?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eHUUM rates it for 283 to 460 cubic feet at 240 volts, and 212 to 354 cubic feet at 208 volts. Add 3.3 cubic feet for every square foot of uninsulated brick, tile or glass in the room.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I choose a different control?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eYes. The package includes a UKU because that is the control HUUM was certified with, and you choose the panel above. HUUM's manual allows any certified sauna control panel, so if you already own one, buy the heater on its own instead.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many circuits does the STEEL 9 need?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eOne. HUUM's manual calls for a 50 amp breaker on 8 AWG cable, hardwired by a licensed electrician.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the stone included, and is it enough?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eYes. HUUM gives the stone capacity as about 330 lb (150 kg), and stone comes in 33 pound boxes, so the package carries 10. Fill the heater as the manual shows: a sparsely filled stone bed is a fire hazard, and the heater must not be switched on until it is properly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install it myself?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eThe heater is hardwired, so a licensed electrician makes the connection. Doing it yourself puts the warranty at risk and usually fails inspection.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the STEEL 9 listed for use in the United States?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eIt is listed by SGS, not by UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and it lists the STEEL 9 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the package?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eHUUM's heater warranty runs 3 years in a private sauna and 1 year in commercial use. Heating elements are excluded, which is why we stock them as \u003ca href=\"\/products\/huum-cliff-steel-heating-element\"\u003eservice parts\u003c\/a\u003e, and we file any claim for you.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the stone ship free with the package?\u003c\/summary\u003e\u003cdiv class=\"hsteel9pkg-fb\"\u003e\u003cp\u003eYes, to the contiguous 48 states. Inside a package the stone carries no shipping charge; ordered on its own it is charged per box. We do not ship HUUM to Alaska, Hawaii or Puerto Rico.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsteel9pkg-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsteel9pkg-c\"\u003e\n\u003cp class=\"hsteel9pkg-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the STEEL 9 is the right output?\u003c\/h2\u003e\n\u003cp\u003eTell us the room size and how the walls are built, and we will size it with you before you order. This package carries the heater, the UKU control and the stone in one price, so the only decision left is the output, and we would rather talk you down a size than sell you the bigger one.\u003c\/p\u003e\n\u003cdiv class=\"hsteel9pkg-who\"\u003e\n\u003cimg class=\"hsteel9pkg-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsteel9pkg-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsteel9pkg-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"UKU Local, black","offer_id":53520482926959,"sku":"HUUM-PKG-STEEL9-LB","price":4086.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local, thermo-ash wood","offer_id":53520482959727,"sku":"HUUM-PKG-STEEL9-LW","price":4399.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, black","offer_id":53520482992495,"sku":"HUUM-PKG-STEEL9-WB","price":4348.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, thermo-ash wood","offer_id":53520483025263,"sku":"HUUM-PKG-STEEL9-WW","price":4661.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, black glass","offer_id":53520483058031,"sku":"HUUM-PKG-STEEL9-WG","price":4748.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, mirror","offer_id":53520483090799,"sku":"HUUM-PKG-STEEL9-WMR","price":5011.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, 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td{display:block;width:auto}.hsteel11pkg table.hsteel11pkg-spec th{border-bottom:0;padding-bottom:0}}.hsteel11pkg .hsteel11pkg-vid .video-wrapper{position:absolute !important;inset:0;width:100%;height:100%;padding:0 !important;margin:0}.hsteel11pkg .hsteel11pkg-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.hsteel11pkg .hsteel11pkg-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.hsteel11pkg .hsteel11pkg-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.hsteel11pkg .hsteel11pkg-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.hsteel11pkg .hsteel11pkg-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}.hsteel11pkg .hsteel11pkg-close p.hsteel11pkg-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hsteel11pkg .hsteel11pkg-stat3 a{color:var(--bright)}.hsteel11pkg .hsteel11pkg-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hsteel11pkg .hsteel11pkg-cmp thead a .hsteel11pkg-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hsteel11pkg .hsteel11pkg-ladder.hsteel11pkg-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hsteel11pkg .hsteel11pkg-ladder.hsteel11pkg-out td:last-child::before{content:\"Output:\\00a0\"}}.hsteel11pkg .hsteel11pkg-tw + p,.hsteel11pkg .hsteel11pkg-tw + h3,.hsteel11pkg .hsteel11pkg-warn + p,.hsteel11pkg .hsteel11pkg-warn + h3,.hsteel11pkg .hsteel11pkg-more + p{margin-top:24px}.hsteel11pkg .hsteel11pkg-vid iframe{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark)}\u003c\/style\u003e\n\u003cdiv class=\"hsteel11pkg\"\u003e\n\u003csection id=\"overview\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n\u003cdetails class=\"hsteel11pkg-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hsteel11pkg-ct\"\u003e13 sections\u003c\/span\u003e\u003c\/summary\u003e\u003col\u003e\n\u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#video\"\u003eVideo\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fit\"\u003eWill it fit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#heater\"\u003eThe heater\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#control\"\u003eThe control\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#electrical\"\u003eBreaker and wire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#stones\"\u003eStone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specs\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#compare\"\u003eHow it compares\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#crate\"\u003eWhat you get\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#delivery\"\u003eDelivery\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eQuestions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#order\"\u003eOrder\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/details\u003e\n\u003ch2\u003eHUUM STEEL 11 Sauna Heater Package\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003eA HUUM heater carton holds the heater and its fixings. No control, no stone. This package is the STEEL 11 with a UKU control and the 10 boxes of stone HUUM's manual asks for, so nothing is missing when the electrician arrives.\u003c\/p\u003e\n\u003cul class=\"hsteel11pkg-chk\"\u003e\n\u003cli\u003eThe HUUM STEEL 11 sauna heater, 11 kW\u003c\/li\u003e\n\u003cli\u003eA HUUM UKU control, in the panel finish you pick above\u003c\/li\u003e\n\u003cli\u003e10 boxes of HUUM olivine diabase stone, 330 lb (150 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe package price is the component prices added together, at the manufacturer's own advertised prices. Nothing is added for bundling them, and there is no inflated compare at price. Buy the parts separately from us and you pay the same.\u003c\/p\u003e\n\u003cdiv class=\"hsteel11pkg-stat3\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteel11pkg-lbl\"\u003eOutput at 240 volts\u003c\/p\u003e\n\u003cp class=\"hsteel11pkg-big\"\u003e11 kW\u003c\/p\u003e\n\u003cp\u003eHUUM's rating on a 240 volt supply. On 208 volts the same heater makes 8.5 kW.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteel11pkg-lbl\"\u003eRoom it is rated for\u003c\/p\u003e\n\u003cp class=\"hsteel11pkg-big\"\u003e354 to 566 cu. ft.\u003c\/p\u003e\n\u003cp\u003eLength times width times height, with 3.3 cubic feet added for every square foot of uninsulated brick, tile or glass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hsteel11pkg-lbl\"\u003eStone included\u003c\/p\u003e\n\u003cp class=\"hsteel11pkg-big\"\u003e10 boxes\u003c\/p\u003e\n\u003cp\u003eHUUM olivine diabase in 33 pound boxes, covering the capacity HUUM publishes for this heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11pkg-tinted\" id=\"video\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eWatch\u003c\/p\u003e\n\u003cdiv class=\"hsteel11pkg-vidrow\"\u003e\n\u003cdiv class=\"hsteel11pkg-vid\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/_XxhQ8VFWJk\" title=\"Building it into the bench, HUUM\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv class=\"hsteel11pkg-vidbody\"\u003e\n\u003ch2\u003eBuilding it into the bench\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003eThe optional embedding flange, from bench cut-out to finished edge.\u003c\/p\u003e\n\u003cp\u003eHUUM filmed this one itself. Its heater installation films are made for Europe and show European wiring, so we do not use them; the sauna side of the job is the same, but the electrical side is not.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"fit\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eSizing\u003c\/p\u003e\n\u003ch2\u003eWhich STEEL package suits your room\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003eEvery package in this series carries the same seven control choices and the same\ngrade of stone. What separates them is output, the room each one is rated for, and the stone load. There are 4 of them.\u003c\/p\u003e\n\u003cdiv class=\"hsteel11pkg-tw\"\u003e\u003ctable class=\"hsteel11pkg-ladder hsteel11pkg-rooms\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eStone included\u003c\/th\u003e\n\u003cth\u003eRated room at 240 V\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-mini-4-sauna-heater-package\"\u003eSTEEL Mini 4\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-6-sauna-heater-package\"\u003eSTEEL 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-9-sauna-heater-package\"\u003eSTEEL 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteel11pkg-on\"\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003eSTEEL 11 \u003cspan class=\"hsteel11pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003eMeasure the room first\u003c\/h3\u003e\n\u003cp\u003eOutput follows the volume of the room rather than its floor, so work in cubic feet: length times\nwidth times height, all in feet. Uninsulated brick, tile or glass pulls heat out of a room faster\nthan a timber wall does, and HUUM's manual answers that by counting an extra 3.3 cubic feet for\nevery square foot of such wall. HUUM does not say whether a glass door counts, so counting it is\nthe cautious choice. If the number lands between two packages, our\n\u003ca href=\"\/pages\/find-your-sauna-heater\"\u003eheater finder\u003c\/a\u003e walks the room with you, or call and we\nwill do it together.\u003c\/p\u003e\n\u003ch3\u003eWhat moves when you change size\u003c\/h3\u003e\n\u003cp\u003eOutput moves with the size and so does the circuit, which is the part people budget late. This\npackage is rated for 354 to 566 cubic feet on a 240 volt supply and 265 to 424 on 208 volts,\nand the breaker and cable HUUM calls for at both voltages are in the specifications below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11pkg-tinted\" id=\"heater\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eThe heater\u003c\/p\u003e\n\u003ch2\u003eWhat the STEEL 11 is rated for\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003eHUUM rates the \u003ca href=\"\/products\/huum-steel-11-electric-sauna-heater\"\u003eSTEEL 11 heater\u003c\/a\u003e for 354 to 566 cubic feet at 240 volts. It stands on the floor in a stainless enclosure, and it measures 12.6 in wide, 12.6 in deep and 38.4 in tall. HUUM gives its stone capacity as about 330 lb (150 kg), and \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eits olivine diabase stone\u003c\/a\u003e comes in 33 pound boxes, so this package carries 10 of them.\u003c\/p\u003e\n\u003cp\u003eThe STEEL wraps its stone in a stainless enclosure. Against a CLIFF of the same output it carries twice the stone, and on the 9 and the 11 it needs far less room to the side wall.\u003c\/p\u003e\n\u003cp\u003eOn a 208 volt supply the same heater makes 8.5 kW and is rated for 265 to 424 cubic feet.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteel11pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-11-studio_e950050b-2d80-478c-bcb2-bfbff2f5b63e.jpg?width=1200\" alt=\"HUUM STEEL 11 sauna heater\" width=\"2048\" height=\"2048\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe heater in the package, before the stone goes in.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"control\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eThe control\u003c\/p\u003e\n\u003ch2\u003eWhich UKU comes in the package\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003ePick the control at the top of this page and the price moves with it. Every choice is a HUUM UKU: the same control, in a different panel.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/huum-uku-local-sauna-heater-control\"\u003eUKU Local\u003c\/a\u003e runs the heater from the wall panel. The \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eUKU Wi-Fi\u003c\/a\u003e adds the phone app, so the room can be hot when you get home. Local comes in black or thermo-ash wood. Wi-Fi adds black glass, mirror and gold.\u003c\/p\u003e\n\u003cp\u003eThe control unit itself mounts outside the hot room, and the panel goes on the wall where you want it. HUUM's manual sets the cable runs, and the cables it needs are in the box.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteel11pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-uku-control-panels-and-app_7fe27574-20ce-4e67-b7b4-b51ab79a7f51.jpg?width=1200\" alt=\"HUUM UKU control panels and app, the control included in this package\" width=\"2000\" height=\"1559\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe UKU panel finishes, and the app the Wi-Fi control adds.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11pkg-tinted\" id=\"electrical\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eThe circuit\u003c\/p\u003e\n\u003ch2\u003e43.75 amps at 240 volts\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003eThe STEEL 11 draws 43.75 amps at 240 volts, and HUUM's manual calls for a 50 amp breaker on 8 AWG cable. It is hardwired, not plugged in.\u003c\/p\u003e\n\u003cp\u003eA sauna heater is a continuous load, so the National Electrical Code can call for a larger breaker and heavier conductors than the manual's figure, and local amendments differ. Your licensed electrician sizes the circuit and pulls the permit. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n\u003ch3\u003eWhy this page quotes two voltages\u003c\/h3\u003e\n\u003cp\u003eThere is nothing to pick here, and nothing on this page selects it. Almost every US home is supplied at 240 volts, while many commercial buildings and some apartment blocks are supplied at 208. It is the same heater and the same part number either way: on 208 volts it draws less and makes less heat, so HUUM publishes a separate output and a smaller room range for it, and the specifications below list both. Your electrician reads the panel and tells you which row applies. At 208 volts HUUM gives 37.98 amps and 50 amps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"stones\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eStone\u003c\/p\u003e\n\u003ch2\u003eThe stone is already in the order\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003eHUUM gives the STEEL 11 a stone capacity of about 330 lb (150 kg). Its\n\u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eolivine diabase\u003c\/a\u003e is sold in 33 pound boxes, so this package carries 10 of\nthem, which covers it.\u003c\/p\u003e\n\u003ch3\u003eWhy the grade is on the label\u003c\/h3\u003e\n\u003cp\u003eThis heater takes stone 1.2 to 1.9 inches (3 to 5 cm) across, which is the range HUUM's manual publishes for it. The\nsize matters because the same manual asks for the stones to be laid loosely enough for air to move\nbetween them, and for the heating elements not to show once the bed is filled. HUUM prints a\nwarning that a too sparsely filled stone container is a fire hazard, so the bed has to be both\nfull and open, and stone outside the published range makes that harder to get right.\u003c\/p\u003e\n\u003ch3\u003eHow the stone travels\u003c\/h3\u003e\n\u003cp\u003eStone is heavy and it is the line most quotes get wrong. In this package it goes on the same\norder as the heater and carries no shipping charge to the contiguous 48 states; ordered on its own\nit is charged per box. That is the difference worth checking if you are weighing the package\nagainst the parts.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hsteel11pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-sauna-stones-olivine_eb67c44f-f019-4c4b-9a62-2a1de5182677_0bfca128-b64e-425a-a684-3f4a3111e2ea.jpg?width=1200\" alt=\"HUUM olivine diabase sauna stones, included in the package\" width=\"2048\" height=\"1365\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eHUUM olivine diabase, the stone counted into this package.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11pkg-tinted\" id=\"specs\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eSpecifications\u003c\/p\u003e\n\u003ch2\u003eWhat is in this package\u003c\/h2\u003e\n\u003cdiv class=\"hsteel11pkg-tw\"\u003e\u003ctable class=\"hsteel11pkg-spec\"\u003e\n\u003ccaption\u003eHUUM STEEL 11 package reference\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater\u003c\/th\u003e\n\u003ctd\u003eHUUM STEEL 11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom at 240 V\u003c\/th\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 208 V\u003c\/th\u003e\n\u003ctd\u003e8.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom at 208 V\u003c\/th\u003e\n\u003ctd\u003e265 to 424 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCurrent at 240 V\u003c\/th\u003e\n\u003ctd\u003e43.75 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBreaker at 240 V\u003c\/th\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable at 240 V\u003c\/th\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBreaker at 208 V\u003c\/th\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable at 208 V\u003c\/th\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater size\u003c\/th\u003e\n\u003ctd\u003e12.6 x 12.6 x 38.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e33 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the side wall\u003c\/th\u003e\n\u003ctd\u003e3.94 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum gap above\u003c\/th\u003e\n\u003ctd\u003e47.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone in the package\u003c\/th\u003e\n\u003ctd\u003e10 boxes, 330 lb (150 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl in the package\u003c\/th\u003e\n\u003ctd\u003eHUUM UKU, panel finish as selected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExtension box\u003c\/th\u003e\n\u003ctd\u003eNot needed at this output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e20.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eEvery figure is HUUM's own, from the current US manual for this heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"compare\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eThe alternatives\u003c\/p\u003e\n\u003ch2\u003eOther HUUM packages that cover a similar room\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003eA room of this size does not tie you to one heater. These HUUM packages have a rated range that overlaps the STEEL 11. Those are the 5 closest of 11; the rest are in our \u003ca href=\"\/collections\/sauna-heater-packages\"\u003esauna heater packages\u003c\/a\u003e collection. Overlapping is not the same as interchangeable: check your own cubic feet against each range before you switch, because HUUM ties the warranty to matching the heater to the room.\u003c\/p\u003e\n\u003cdiv class=\"hsteel11pkg-tw\"\u003e\u003ctable class=\"hsteel11pkg-ladder hsteel11pkg-rooms\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003cth\u003eStone included\u003c\/th\u003e\n\u003cth\u003eWhere it sits\u003c\/th\u003e\n\u003cth\u003eRated room\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-cliff-9-sauna-heater-package\"\u003eCLIFF 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e5 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-core-11-sauna-heater-package\"\u003eCORE 11\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10.5 kW\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-hive-mini-11-sauna-heater-package\"\u003eHIVE Mini 11\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10.6 kW\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-cliff-11-sauna-heater-package\"\u003eCLIFF 11\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003ctd\u003e5 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hsteel11pkg-on\"\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003eSTEEL 11 \u003cspan class=\"hsteel11pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003ctd\u003e10 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hsteel11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-hive-12-sauna-heater-package\"\u003eHIVE 12\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003ctd\u003e16 boxes\u003c\/td\u003e\n\u003ctd\u003eFloor standing\u003c\/td\u003e\n\u003ctd\u003e424 to 636 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eOne caveat on the table. The HIVE 12 draws more than the UKU main module carries on its own, so that package also includes the UKU extension box and asks the electrician for two supply circuits rather than one.\u003c\/p\u003e\n\u003ch3\u003eReading the stone column\u003c\/h3\u003e\n\u003cp\u003eTwo heaters of the same output can carry very different stone loads, and HUUM describes its large stone loads as the source of a gentle, long lasting steam. Neither way is better. Where there is a real tie breaker it is usually the last thing on the list, whether the heater hangs on the wall or stands on the floor, which is the Where it sits column.\u003c\/p\u003e\n\u003cp\u003eThe outputs, room ranges and mounting are HUUM's own figures from the current US manual for each\nheater. The box counts are ours, worked from the stone weight HUUM publishes and its 33 pound box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11pkg-tinted\" id=\"crate\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n\u003ch2\u003eWhat arrives, and in how many boxes\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003eA package is three separate cartons rather than one, because the heater, the control and the stone are packed by HUUM as separate lines.\u003c\/p\u003e\n\u003cul class=\"hsteel11pkg-chk\"\u003e\n\u003cli\u003eThe heater, in HUUM's own carton with its fixings and manual\u003c\/li\u003e\n\u003cli\u003eThe UKU control, panel and module, in a separate carton\u003c\/li\u003e\n\u003cli\u003e10 boxes of stone at 33 pounds each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNothing else is needed to fire it once the electrician has made the connection. The rail, the drip tray and the embedding flange HUUM lists for this heater are optional and ordered separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"delivery\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eDelivery\u003c\/p\u003e\n\u003ch2\u003eHow the package arrives\u003c\/h2\u003e\n\u003cp class=\"hsteel11pkg-lead\"\u003eThe heater ships palletized by freight. The carrier calls to book a window, someone has to sign for it, and the handover is curbside rather than inside, so plan on two people to move it. The stone travels in its own boxes, 10 of them at 33 pounds each, and the control comes in its own carton. They can arrive on different days.\u003c\/p\u003e\n\u003cp\u003eShipping is free to the contiguous 48 states. We do not ship HUUM to Alaska, Hawaii or Puerto Rico. Buying the stone inside a package is what keeps it free; ordered on its own it is charged per box.\u003c\/p\u003e\n\u003cp\u003eLead time runs about 7 to 14 days from order. Inspect the pallet before you sign, note any damage on the delivery paperwork, and tell us within 48 hours of delivery if anything is damaged, with photographs, so we can file the claim. Full terms are on our \u003ca href=\"\/pages\/huum-shipping-policy\"\u003eHUUM shipping policy\u003c\/a\u003e, with the \u003ca href=\"\/pages\/huum-warranty-policy\"\u003ewarranty\u003c\/a\u003e and \u003ca href=\"\/pages\/huum-return-policy\"\u003ereturns\u003c\/a\u003e pages alongside it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hsteel11pkg-tinted\" id=\"faq\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\"\u003eQuestions\u003c\/p\u003e\n\u003ch2\u003eQuestions buyers ask about this package\u003c\/h2\u003e\n\u003cdiv class=\"hsteel11pkg-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is in the HUUM STEEL 11 package?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eThe STEEL 11 heater, a HUUM UKU control in the panel finish you pick, and 10 boxes of HUUM olivine diabase stone, 330 lb (150 kg).\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the package cost more than buying the parts on their own?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eNo. The price is the component prices added together at the manufacturer's advertised prices, with nothing added for bundling.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat size room does the STEEL 11 heat?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eHUUM rates it for 354 to 566 cubic feet at 240 volts, and 265 to 424 cubic feet at 208 volts. Add 3.3 cubic feet for every square foot of uninsulated brick, tile or glass in the room.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I choose a different control?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eYes. The package includes a UKU because that is the control HUUM was certified with, and you choose the panel above. HUUM's manual allows any certified sauna control panel, so if you already own one, buy the heater on its own instead.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many circuits does the STEEL 11 need?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eOne. HUUM's manual calls for a 50 amp breaker on 8 AWG cable, hardwired by a licensed electrician.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the stone included, and is it enough?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eYes. HUUM gives the stone capacity as about 330 lb (150 kg), and stone comes in 33 pound boxes, so the package carries 10. Fill the heater as the manual shows: a sparsely filled stone bed is a fire hazard, and the heater must not be switched on until it is properly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install it myself?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eThe heater is hardwired, so a licensed electrician makes the connection. Doing it yourself puts the warranty at risk and usually fails inspection.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the STEEL 11 listed for use in the United States?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eIt is listed by SGS, not by UL. SGS North America is on OSHA's list of nationally recognized testing laboratories, and it lists the STEEL 11 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the package?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eHUUM's heater warranty runs 3 years in a private sauna and 1 year in commercial use. Heating elements are excluded, which is why we stock them as \u003ca href=\"\/products\/huum-cliff-steel-heating-element\"\u003eservice parts\u003c\/a\u003e, and we file any claim for you.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the stone ship free with the package?\u003c\/summary\u003e\u003cdiv class=\"hsteel11pkg-fb\"\u003e\u003cp\u003eYes, to the contiguous 48 states. Inside a package the stone carries no shipping charge; ordered on its own it is charged per box. We do not ship HUUM to Alaska, Hawaii or Puerto Rico.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hsteel11pkg-close\" id=\"order\"\u003e\n\u003cdiv class=\"hsteel11pkg-c\"\u003e\n\u003cp class=\"hsteel11pkg-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the STEEL 11 is the right output?\u003c\/h2\u003e\n\u003cp\u003eTell us the room size and how the walls are built, and we will size it with you before you order. This package carries the heater, the UKU control and the stone in one price, so the only decision left is the output, and we would rather talk you down a size than sell you the bigger one.\u003c\/p\u003e\n\u003cdiv class=\"hsteel11pkg-who\"\u003e\n\u003cimg class=\"hsteel11pkg-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Chaddy, sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\" loading=\"lazy\"\u003e\n\u003cp\u003e\u003cb\u003eChaddy\u003c\/b\u003e\u003cspan\u003eSauna specialist, Recovery Room Direct\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca class=\"hsteel11pkg-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hsteel11pkg-up\" href=\"#MainContent\"\u003eReady to order? Scroll up to the buy box\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"UKU Local, black","offer_id":53520483189103,"sku":"HUUM-PKG-STEEL11-LB","price":4253.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local, thermo-ash wood","offer_id":53520483221871,"sku":"HUUM-PKG-STEEL11-LW","price":4566.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, black","offer_id":53520483254639,"sku":"HUUM-PKG-STEEL11-WB","price":4515.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, thermo-ash wood","offer_id":53520483287407,"sku":"HUUM-PKG-STEEL11-WW","price":4828.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, black glass","offer_id":53520483320175,"sku":"HUUM-PKG-STEEL11-WG","price":4915.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, mirror","offer_id":53520483352943,"sku":"HUUM-PKG-STEEL11-WMR","price":5178.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wi-Fi, gold","offer_id":53520483385711,"sku":"HUUM-PKG-STEEL11-WGD","price":5178.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-steel-11-sauna-heater-package-black-control.jpg?v=1790665795"}],"url":"https:\/\/recoveryroomdirect.com\/collections\/huum-steel.oembed","provider":"Recovery Room Direct","version":"1.0","type":"link"}