{"title":"HUUM CORE Sauna Heaters","description":"\u003cp\u003eCORE keeps the controls outside the room and the heater inside it. Useful where the sauna is shared, or where nobody should be adjusting it from the bench.\u003c\/p\u003e[split]","products":[{"product_id":"huum-core-6-electric-sauna-heater","title":"HUUM CORE 6 Electric Sauna Heater, 6.5 kW","description":"\u003cstyle\u003e.hcore6{--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}.hcore6 *{box-sizing:border-box}.hcore6 .hcore6-c img{margin:0 !important;border:0}.hcore6 .hcore6-c{max-width:1000px;margin:0 auto;padding:0 20px}.hcore6 section{padding:52px 0}.hcore6 section:first-of-type{padding-top:26px}.hcore6 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th{border-bottom:0;padding-bottom:0}}.hcore6 .hcore6-vid .video-wrapper{position:absolute !important;inset:0;width:100%;height:100%;padding:0 !important;margin:0}.hcore6 .hcore6-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.hcore6 .hcore6-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.hcore6 .hcore6-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.hcore6 .hcore6-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.hcore6 .hcore6-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}.hcore6 .hcore6-close p.hcore6-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hcore6 .hcore6-stat3 a{color:var(--bright)}.hcore6 .hcore6-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hcore6 .hcore6-cmp thead a .hcore6-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hcore6 .hcore6-ladder.hcore6-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hcore6 .hcore6-ladder.hcore6-out td:last-child::before{content:\"Output:\\00a0\"}}.hcore6 .hcore6-tw + p,.hcore6 .hcore6-tw + h3,.hcore6 .hcore6-warn + p,.hcore6 .hcore6-warn + h3,.hcore6 .hcore6-more + p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hcore6\"\u003e\n\u003csection id=\"overview\"\u003e\n  \u003cdiv class=\"hcore6-c\"\u003e\n    \u003cdetails class=\"hcore6-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hcore6-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=\"hcore6-eyebrow\"\u003eThe smallest CORE\u003c\/p\u003e\n    \u003ch2\u003eThe HUUM CORE 6 is a 6.5 kW floor standing electric sauna heater for rooms of 177 to 318 cubic feet\u003c\/h2\u003e\n    \u003cp class=\"hcore6-lead\"\u003e6.5 kilowatts for rooms of 177 to 318 cubic feet, in a square floor standing heater you can leave black, clad in HUUM's wood panels, or finish yourself.\u003c\/p\u003e\n    \u003cdiv class=\"hcore6-stat3\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hcore6-lbl\"\u003eThe room\u003c\/p\u003e\n        \u003cp class=\"hcore6-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=\"hcore6-lbl\"\u003eRated current\u003c\/p\u003e\n        \u003cp class=\"hcore6-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=\"hcore6-lbl\"\u003eThe rest of the order\u003c\/p\u003e\n        \u003cp class=\"hcore6-big\"\u003eControl and 3 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 the heater holds about 88.2 lb of \u003ca href=\"\/products\/huum-sauna-stones-5-10-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=\"hcore6-tinted\" id=\"fit\"\u003e\n  \u003cdiv class=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eSizing\u003c\/p\u003e\n    \u003ch2\u003eWill the HUUM CORE 6 heat your sauna?\u003c\/h2\u003e\n    \u003cp class=\"hcore6-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 CORE 6 for \u003cstrong\u003e177 to 318 cubic feet\u003c\/strong\u003e on a 240 volt supply, and its manual warns that the warranty is not valid if the heater output does not match the calculated room volume.\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=\"hcore6-tw\"\u003e\u003ctable class=\"hcore6-ladder hcore6-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=\"hcore6-on\"\u003e\n\u003ctd class=\"hcore6-kw\"\u003eCORE 6 \u003cspan class=\"hcore6-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\u003e6.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hcore6-kw\"\u003eCORE 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=\"hcore6-kw\"\u003eCORE 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\u003e10.5 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 CORE 6\u003c\/h3\u003e\n    \u003cp\u003eTake a room 7 feet by 6 feet with a 7 foot ceiling: 42 square feet of floor and 294 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 337 cubic feet, which is past the CORE 6 and into CORE 9 territory.\u003c\/p\u003e\n    \u003cdiv class=\"hcore6-warn\"\u003e\u003cp\u003e\u003cb\u003eThe minimum sauna room height for a CORE is 80 inches (2030 mm).\u003c\/b\u003e HUUM recommends 80 to 91 inches and asks for 44 to 51 inches between the top bench and the ceiling. For a taller room, HUUM advises lowering the ceiling 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=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eFive exteriors, two trims\u003c\/p\u003e\n    \u003ch2\u003eChoosing the exterior of the CORE 6\u003c\/h2\u003e\n    \u003cp class=\"hcore6-lead\"\u003eThe CORE is a square heater with its stone in an open top. HUUM makes it in a black metal case, or without a case to clad in ceramic tile, stone, glass or wood, as HUUM puts it, and HUUM lists it as a European Product Design Award winner.\u003c\/p\u003e\n    \u003cdiv class=\"hcore6-block\"\u003e\n        \u003ch3\u003eBlack\u003c\/h3\u003e\n        \u003cp\u003eHUUM's finished version, in what it calls a sleek black metal casing. It comes with a black top trim only.\u003c\/p\u003e\n        \u003ch3\u003eUnfinished, to finish yourself\u003c\/h3\u003e\n        \u003cp\u003eThe caseless CORE, which HUUM describes as allowing easy customization. It ships with 4 unfinished metal shields, 4 cover strips and their screws, and the manual's two appendices show slat finishes and tile. Choose a black or stainless steel top trim.\u003c\/p\u003e\n        \u003ch3\u003eAlder, aspen or thermo-aspen\u003c\/h3\u003e\n        \u003cp\u003eThe unfinished CORE with HUUM's own wood panels. The 4 panels and their fastening screws come in the box and fit to the metal shields. Each comes with a black or stainless steel top trim.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cfigure\u003e\u003cdiv class=\"hcore6-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black.jpg?v=1790070143\u0026amp;width=1200\" alt=\"HUUM CORE floor standing electric sauna heater, Black exterior, with its stones laid\" width=\"1084\" height=\"1084\" loading=\"eager\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe HUUM CORE in its Black exterior.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003cdiv class=\"hcore6-warn\"\u003e\u003cp\u003e\u003cb\u003eFinishing it yourself has rules.\u003c\/b\u003e HUUM's manual limits one side panel, finish included, to 44.1 lb (20 kg), caps the fixing screw diameter at 4.2 mm, and asks for at least a 1 inch (25 mm) air gap under the heater. It also advises connecting the wiring and checking the heater works before you fit the finish, because a finished CORE is heavy and hard to turn. Use a material suitable for the sauna, and ask a specialist about fasteners. The horizontal finish and tile route in the manual's Appendix 2 fixes to mounting brackets that HUUM sells as an accessory.\u003c\/p\u003e\u003c\/div\u003e\n    \u003ch3\u003eIt can be sunk into the bench\u003c\/h3\u003e\n    \u003cp\u003eHUUM says the CORE may be embedded into the sauna bench in its full length, and describes its safety distances as small enough for various placement options. The manual's 2 in (50 mm) clearance to flammable material still applies, so keep that gap to the bench on every side.\u003c\/p\u003e\n    \u003ch3\u003eWhat the CORE 6 is for\u003c\/h3\u003e\n    \u003cp\u003eIt is the smallest CORE and runs on a 30 amp breaker with 10 AWG cable in HUUM's manual. All three sizes share one body, one set of clearances and one stone load, so choosing between them is purely the room volume and the circuit.\u003c\/p\u003e\n\u003cp\u003eOn a 208 volt supply it makes 4.8 kW and is rated for 142 to 248 cubic feet.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hcore6-tinted\" id=\"parts\"\u003e\n  \u003cdiv class=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n    \u003ch2\u003eWhat a working CORE 6 takes, beyond the heater\u003c\/h2\u003e\n    \u003cp class=\"hcore6-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=\"hcore6-tw\"\u003e\u003ctable class=\"hcore6-spec\"\u003e\n      \u003ccaption\u003eRequired to operate\u003c\/caption\u003e\n      \u003ctr class=\"hcore6-hl\"\u003e\n\u003cth\u003eThe heater\u003c\/th\u003e\n\u003ctd\u003eThis page, in the exterior and trim you choose.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eA certified control\u003c\/th\u003e\n\u003ctd\u003eHUUM's manual says any certified control panel may be used, and that it must have a timer function. HUUM's matched control is the UKU: 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      \u003ctr\u003e\n\u003cth\u003e3 boxes of stone\u003c\/th\u003e\n\u003ctd\u003eThe heater holds about 88.2 lb (40 kg), 2 to 4 inches (5 to 10 cm). \u003ca href=\"\/products\/huum-sauna-stones-5-10-cm\"\u003eHUUM olivine diabase sauna stones\u003c\/a\u003e come in 33 pound boxes, so 3 boxes covers it with a little to spare.\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's manual recommends a guard rail of a material with low heat capacity and poor thermal conductivity, and says the heater's minimum safety distances still have to be kept to a flammable guard. Check what your local code has adopted.\u003c\/p\u003e\n    \u003cdiv class=\"hcore6-warn\"\u003e\u003cp\u003eBuying the heater, the control and the stone together settles the order in one go. 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=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eElectrical\u003c\/p\u003e\n    \u003ch2\u003eThe breaker and wire size the HUUM CORE 6 needs\u003c\/h2\u003e\n    \u003cp class=\"hcore6-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    \u003cdiv class=\"hcore6-tw\"\u003e\u003ctable class=\"hcore6-ladder hcore6-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=\"hcore6-on\"\u003e\n\u003ctd class=\"hcore6-kw\"\u003e240 V\u003cspan class=\"hcore6-tag\"\u003eMost homes\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e6.5 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=\"hcore6-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\u003eA means of disconnecting all poles, a circuit breaker, goes on the power circuit before the sauna control. Crimping the cable ends is mandatory, cable with non heat resistant PVC insulation is not allowed, and a junction box in the sauna room must be waterproof and no higher than 19 11\/16 inches (50 cm) from the floor. The power cable enters through the bottom cover.\u003c\/p\u003e\n    \u003cdiv class=\"hcore6-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\/25\/SUW\/00121X covers the CORE 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=\"hcore6-tinted\" id=\"install\"\u003e\n  \u003cdiv class=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eClearances\u003c\/p\u003e\n    \u003ch2\u003eWhere the HUUM CORE 6 can go\u003c\/h2\u003e\n    \u003cp class=\"hcore6-lead\"\u003eAll three CORE sizes share one set of clearances in HUUM's manual, and they are small.\u003c\/p\u003e\n    \u003cdiv class=\"hcore6-tw\"\u003e\u003ctable class=\"hcore6-spec\"\u003e\n      \u003ccaption\u003eMinimum distances, CORE 6\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eTo the walls around the heater\u003c\/th\u003e\n\u003ctd\u003e2 in (50 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAbove the heater, to the ceiling\u003c\/th\u003e\n\u003ctd\u003e43.3 in (1100 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAir gap under the heater\u003c\/th\u003e\n\u003ctd\u003e1 in (25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eHeater size, HUUM's table\u003c\/th\u003e\n\u003ctd\u003e15.16 in W x 15.16 in D x 32.7 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e41.9 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 brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eHUUM's manual has the CORE anchored to the floor with brackets on the heater legs, fixed with a suitable screw, preferably at least 6 x 40 mm. On the unfinished and wood versions, the final outside size depends on the exterior fitted.\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=\"hcore6-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black-in-sauna.jpg?width=1200\" alt=\"HUUM CORE Black in a barrel sauna\" width=\"896\" height=\"896\" 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=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eStone\u003c\/p\u003e\n    \u003ch2\u003eHow much stone the CORE 6 takes, and how to lay it\u003c\/h2\u003e\n    \u003cp class=\"hcore6-lead\"\u003eThe stone is not a finishing touch. It is the thermal mass that turns 6.5 kW into steam, and the heater may be used only when it has been correctly filled.\u003c\/p\u003e\n    \u003cp\u003eHUUM's manual says the heater holds about \u003cstrong\u003e88.2 lb (40 kg)\u003c\/strong\u003e of stone 2 to 4 inches (5 to 10 cm) across. That is \u003cstrong\u003e3 boxes\u003c\/strong\u003e of HUUM's 33 pound olivine diabase, with a little left over.\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 surface goes close together, and no element may be left visible. HUUM strongly recommends having a specialist lay the stone, and allows ceramic stones only at your own risk.\u003c\/p\u003e\n    \u003cdiv class=\"hcore6-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's manual warns that a too sparsely filled stone container causes a fire hazard,\u003c\/b\u003e and that defects caused by unsuitable stone are not covered by the warranty.\u003c\/p\u003e\u003c\/div\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hcore6-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black-top.jpg?width=1200\" alt=\"Stones in the top of a HUUM CORE Black\" width=\"800\" height=\"800\" 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=\"hcore6-tinted\" id=\"costs\"\u003e\n  \u003cdiv class=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eRunning cost\u003c\/p\u003e\n    \u003ch2\u003eWhat the CORE 6 costs to run\u003c\/h2\u003e\n    \u003cp class=\"hcore6-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=\"hcore6-tw\"\u003e\u003ctable class=\"hcore6-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\u003e6.5 kW x 0.183 = about 1.19 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 3.57 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree of those a week\u003c\/th\u003e\n\u003ctd\u003eabout 11 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=\"hcore6-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=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n    \u003ch2\u003eIn the CORE 6 carton\u003c\/h2\u003e\n    \u003cdiv class=\"hcore6-pairup\"\u003e\n      \u003cdiv\u003e\n        \u003cul class=\"hcore6-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\u003cli\u003eUnfinished and wood versions: 4 unfinished metal shields, 4 cover strips and their screws\u003c\/li\u003e\n\u003cli\u003eWood versions: 4 wood panels and their fastening screws\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 3 boxes of stone are required to operate the heater. On the unfinished version, the exterior is yours to supply.\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=\"hcore6-tinted\" id=\"specs\"\u003e\n  \u003cdiv class=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eReference\u003c\/p\u003e\n    \u003ch2\u003eHUUM CORE 6 specifications\u003c\/h2\u003e\n    \u003cdetails class=\"hcore6-more\" open\u003e\n      \u003csummary\u003eFull specification tables\u003c\/summary\u003e\n      \u003cdiv class=\"hcore6-tw\"\u003e\u003ctable class=\"hcore6-spec\"\u003e\n\u003ccaption\u003eFrom the CORE user manual US v9 (November 2025), Tables 1 to 3\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater output\u003c\/th\u003e\n\u003ctd\u003e6.5 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 cu. ft. at 240 V, 142 to 248 cu. ft. at 208 V (after the cold-wall adjustment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum room height\u003c\/th\u003e\n\u003ctd\u003e80 in (2030 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 88.2 lb (40 kg), 3 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone size\u003c\/th\u003e\n\u003ctd\u003e2 to 4 in (5 to 10 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater size\u003c\/th\u003e\n\u003ctd\u003e15.16 in W x 15.16 in D x 32.7 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the walls\u003c\/th\u003e\n\u003ctd\u003e2 in (50 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance above the heater\u003c\/th\u003e\n\u003ctd\u003e43.3 in (1100 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAir gap under the heater\u003c\/th\u003e\n\u003ctd\u003e1 in (25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eSeparate certified control with a timer function, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n      \u003cdiv class=\"hcore6-tw\"\u003e\u003ctable class=\"hcore6-spec\"\u003e\n\u003ccaption\u003eOptions, certification and warranty\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eExteriors\u003c\/th\u003e\n\u003ctd\u003eBlack, unfinished, alder, aspen, thermo-aspen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTop trim\u003c\/th\u003e\n\u003ctd\u003eBlack or stainless steel (Black exterior: black only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e41.9 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e240 V or 208 V, 50\/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\/25\/SUW\/00121X)\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=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eThe range\u003c\/p\u003e\n    \u003ch2\u003eHUUM CORE 6 against the rest of the CORE range\u003c\/h2\u003e\n    \u003cp class=\"hcore6-lead\"\u003eAll three share one body, one set of clearances, one stone load and the same five exteriors. Every 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=\"hcore6-tw hcore6-tw--scroll\"\u003e\u003ctable class=\"hcore6-cmp\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth class=\"hcore6-me\"\u003e\n\u003cspan class=\"hcore6-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcore6-cmp-m\"\u003eCORE 6\u003c\/span\u003e\u003cspan class=\"hcore6-cmp-here\"\u003eYou are here\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-core-9-electric-sauna-heater\"\u003e\u003cspan class=\"hcore6-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcore6-cmp-m\"\u003eCORE 9\u003c\/span\u003e\u003cspan class=\"hcore6-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-core-11-electric-sauna-heater\"\u003e\u003cspan class=\"hcore6-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcore6-cmp-m\"\u003eCORE 11\u003c\/span\u003e\u003cspan class=\"hcore6-cmp-here\"\u003e10.5 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=\"hcore6-me\"\u003e6.5 kW\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e10.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated room\u003c\/td\u003e\n\u003ctd class=\"hcore6-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 class=\"hcore6-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 class=\"hcore6-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 class=\"hcore6-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\u003eStone\u003c\/td\u003e\n\u003ctd class=\"hcore6-me\"\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhen a CORE is the wrong heater\u003c\/h3\u003e\n    \u003cp\u003eThe CORE tops out at 10.5 kW and 566 cubic feet. For a bigger room, the \u003ca href=\"\/products\/huum-hive-12-electric-sauna-heater\"\u003eHUUM HIVE\u003c\/a\u003e goes to 18 kW. Compare 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=\"hcore6-c\"\u003e\n    \u003cp class=\"hcore6-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n    \u003ch2\u003eHUUM CORE 6 questions buyers ask before ordering\u003c\/h2\u003e\n    \u003cdiv class=\"hcore6-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat size sauna will the HUUM CORE 6 heat?\u003c\/summary\u003e\u003cdiv class=\"hcore6-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\u003eWhich CORE exterior should I choose?\u003c\/summary\u003e\u003cdiv class=\"hcore6-fb\"\u003e\u003cp\u003eBlack is HUUM's finished black metal case, with a black top trim. Unfinished is the caseless heater you clad yourself in wood slats, tile, stone or glass, following the manual's finishing appendices. Alder, aspen and thermo-aspen are the unfinished heater with HUUM's wood panels in the box. The unfinished and wood versions come with a black or stainless steel top trim.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM CORE 6 come with a control?\u003c\/summary\u003e\u003cdiv class=\"hcore6-fb\"\u003e\u003cp\u003eNo. It needs a separate certified control with a timer function, bought separately. HUUM's matched control is the UKU, in Local or Wi-Fi form, and at this output it runs from the UKU's main module without the extension box.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many boxes of stone does the HUUM CORE 6 need?\u003c\/summary\u003e\u003cdiv class=\"hcore6-fb\"\u003e\u003cp\u003e3 boxes. HUUM's manual says the heater holds about 88.2 lb (40 kg) of stone 2 to 4 inches across, and HUUM's olivine diabase comes in 33 pound boxes. The heater may be used only when it has been correctly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat breaker and wire does the HUUM CORE 6 need?\u003c\/summary\u003e\u003cdiv class=\"hcore6-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. 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 CORE 6 UL listed?\u003c\/summary\u003e\u003cdiv class=\"hcore6-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 CORE 6 for the United States and Canada under certificate SGSNA\/25\/SUW\/00121X, 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 powered and controlled by a certified controller and the wiring to that controller follows the National Electrical Code. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the SGS directory record for it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I finish the unfinished CORE myself?\u003c\/summary\u003e\u003cdiv class=\"hcore6-fb\"\u003e\u003cp\u003eYes, that is what it is for. HUUM's manual limits each side panel, finish included, to 44.1 lb (20 kg), caps the screw diameter at 4.2 mm, and asks for a 1 inch (25 mm) air gap under the heater. Use a material suitable for the sauna, and connect and test the wiring before you fit the finish.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install the HUUM CORE 6 myself?\u003c\/summary\u003e\u003cdiv class=\"hcore6-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 strongly recommends a specialist lays the stone. The heater is hardwired, crimped cable ends are mandatory 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 CORE 6 need a GFCI breaker?\u003c\/summary\u003e\u003cdiv class=\"hcore6-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\u003eWhat warranty comes with the HUUM CORE 6?\u003c\/summary\u003e\u003cdiv class=\"hcore6-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.\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=\"hcore6-close\" id=\"order\"\u003e\n\u003cdiv class=\"hcore6-c\"\u003e\n\u003cp class=\"hcore6-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the CORE 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=\"hcore6-who\"\u003e\n\u003cimg class=\"hcore6-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=\"hcore6-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hcore6-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":"Black","offer_id":53514525671791,"sku":"H1013072","price":2081.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim","offer_id":53514525770095,"sku":"H1013012+H3013011","price":2820.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, stainless trim","offer_id":53514525802863,"sku":"H1013042+H3013011","price":2820.0,"currency_code":"USD","in_stock":true},{"title":"Aspen wood, black trim","offer_id":53514525835631,"sku":"H1013012+H3013031","price":2820.0,"currency_code":"USD","in_stock":true},{"title":"Aspen wood, stainless trim","offer_id":53514525868399,"sku":"H1013042+H3013031","price":2820.0,"currency_code":"USD","in_stock":true},{"title":"Thermo-Aspen wood, black trim","offer_id":53514525901167,"sku":"H1013012+H3013021","price":2942.0,"currency_code":"USD","in_stock":true},{"title":"Thermo-Aspen wood, stainless trim","offer_id":53514525933935,"sku":"H1013042+H3013021","price":2942.0,"currency_code":"USD","in_stock":true},{"title":"Unfinished, black trim","offer_id":53514525704559,"sku":"H1013012","price":1880.0,"currency_code":"USD","in_stock":true},{"title":"Unfinished, stainless trim","offer_id":53514525737327,"sku":"H1013042","price":1880.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black.jpg?v=1790070143"},{"product_id":"huum-core-9-electric-sauna-heater","title":"HUUM CORE 9 Electric Sauna Heater, 9 kW","description":"\u003cstyle\u003e.hcore9{--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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td,.hcore9 .hcore9-hl th,.hcore9 .hcore9-ladder tr.hcore9-on td,.hcore9 table.hcore9-cmp td.hcore9-me{border-bottom-color:var(--edge)}@media screen and (max-width:840px){.hcore9 table.hcore9-cmp thead a{min-height:44px;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:2px}}.rte .hcore9 table th,.rte .hcore9 table td{padding:11px var(--gut)}.hcore9 .hcore9-ladder th:last-child,.hcore9 .hcore9-ladder td:last-child{text-align:left;white-space:normal;overflow-wrap:anywhere}.hcore9 .hcore9-buy{align-items:start}.hcore9 .hcore9-buy li span a{display:inline-block;padding:16px 0;margin:-16px 0}.hcore9 table.hcore9-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)}.hcore9 table.hcore9-cmp thead th:first-child{position:sticky;left:0;z-index:2;background:var(--fill)}@media screen and (max-width:560px){.hcore9 .hcore9-ladder td:last-child::before{content:\"Nameplate draw:\\00a0\";font-weight:700;color:var(--ink)}}@media screen and (max-width:480px){.hcore9 table.hcore9-spec th,.hcore9 table.hcore9-spec td{display:block;width:auto}.hcore9 table.hcore9-spec th{border-bottom:0;padding-bottom:0}}.hcore9 .hcore9-vid .video-wrapper{position:absolute !important;inset:0;width:100%;height:100%;padding:0 !important;margin:0}.hcore9 .hcore9-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.hcore9 .hcore9-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.hcore9 .hcore9-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.hcore9 .hcore9-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.hcore9 .hcore9-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}.hcore9 .hcore9-close p.hcore9-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hcore9 .hcore9-stat3 a{color:var(--bright)}.hcore9 .hcore9-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hcore9 .hcore9-cmp thead a .hcore9-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hcore9 .hcore9-ladder.hcore9-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hcore9 .hcore9-ladder.hcore9-out td:last-child::before{content:\"Output:\\00a0\"}}.hcore9 .hcore9-tw + p,.hcore9 .hcore9-tw + h3,.hcore9 .hcore9-warn + p,.hcore9 .hcore9-warn + h3,.hcore9 .hcore9-more + p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hcore9\"\u003e\n\u003csection id=\"overview\"\u003e\n  \u003cdiv class=\"hcore9-c\"\u003e\n    \u003cdetails class=\"hcore9-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hcore9-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=\"hcore9-eyebrow\"\u003eNine kilowatts\u003c\/p\u003e\n    \u003ch2\u003eThe HUUM CORE 9 is a 9 kW floor standing electric sauna heater for rooms of 283 to 460 cubic feet\u003c\/h2\u003e\n    \u003cp class=\"hcore9-lead\"\u003eThe CORE 9 heats rooms of 283 to 460 cubic feet from the same 15.16 inch square body as the CORE 6.\u003c\/p\u003e\n    \u003cdiv class=\"hcore9-stat3\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hcore9-lbl\"\u003eThe room\u003c\/p\u003e\n        \u003cp class=\"hcore9-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=\"hcore9-lbl\"\u003eRated current\u003c\/p\u003e\n        \u003cp class=\"hcore9-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. 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=\"hcore9-lbl\"\u003eThe rest of the order\u003c\/p\u003e\n        \u003cp class=\"hcore9-big\"\u003eControl and 3 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 the heater holds about 88.2 lb of \u003ca href=\"\/products\/huum-sauna-stones-5-10-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=\"hcore9-tinted\" id=\"fit\"\u003e\n  \u003cdiv class=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eSizing\u003c\/p\u003e\n    \u003ch2\u003eWill the HUUM CORE 9 heat your sauna?\u003c\/h2\u003e\n    \u003cp class=\"hcore9-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 CORE 9 for \u003cstrong\u003e283 to 460 cubic feet\u003c\/strong\u003e on a 240 volt supply, and its manual warns that the warranty is not valid if the heater output does not match the calculated room volume.\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=\"hcore9-tw\"\u003e\u003ctable class=\"hcore9-ladder hcore9-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=\"hcore9-kw\"\u003eCORE 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\u003e6.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hcore9-on\"\u003e\n\u003ctd class=\"hcore9-kw\"\u003eCORE 9 \u003cspan class=\"hcore9-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=\"hcore9-kw\"\u003eCORE 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\u003e10.5 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 CORE 9\u003c\/h3\u003e\n    \u003cp\u003eTake a room 9 feet by 7 feet with a 7 foot ceiling: 63 square feet of floor and 441 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 484 cubic feet, which is past the CORE 9 and into CORE 11 territory.\u003c\/p\u003e\n    \u003cdiv class=\"hcore9-warn\"\u003e\u003cp\u003e\u003cb\u003eThe minimum sauna room height for a CORE is 80 inches (2030 mm).\u003c\/b\u003e HUUM recommends 80 to 91 inches and asks for 44 to 51 inches between the top bench and the ceiling. For a taller room, HUUM advises lowering the ceiling 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=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eFive exteriors, two trims\u003c\/p\u003e\n    \u003ch2\u003eChoosing the exterior of the CORE 9\u003c\/h2\u003e\n    \u003cp class=\"hcore9-lead\"\u003eThe CORE is a square heater with its stone in an open top. HUUM makes it in a black metal case, or without a case to clad in ceramic tile, stone, glass or wood, as HUUM puts it, and HUUM lists it as a European Product Design Award winner.\u003c\/p\u003e\n    \u003cdiv class=\"hcore9-block\"\u003e\n        \u003ch3\u003eBlack\u003c\/h3\u003e\n        \u003cp\u003eHUUM's finished version, in what it calls a sleek black metal casing. It comes with a black top trim only.\u003c\/p\u003e\n        \u003ch3\u003eUnfinished, to finish yourself\u003c\/h3\u003e\n        \u003cp\u003eThe caseless CORE, which HUUM describes as allowing easy customization. It ships with 4 unfinished metal shields, 4 cover strips and their screws, and the manual's two appendices show slat finishes and tile. Choose a black or stainless steel top trim.\u003c\/p\u003e\n        \u003ch3\u003eAlder, aspen or thermo-aspen\u003c\/h3\u003e\n        \u003cp\u003eThe unfinished CORE with HUUM's own wood panels. The 4 panels and their fastening screws come in the box and fit to the metal shields. Each comes with a black or stainless steel top trim.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cfigure\u003e\u003cdiv class=\"hcore9-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black_d5956cba-c849-44d2-8a9f-928a92ed9274.jpg?v=1790070185\u0026amp;width=1200\" alt=\"HUUM CORE floor standing electric sauna heater, Black exterior, with its stones laid\" width=\"1084\" height=\"1084\" loading=\"eager\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe HUUM CORE in its Black exterior.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003cdiv class=\"hcore9-warn\"\u003e\u003cp\u003e\u003cb\u003eFinishing it yourself has rules.\u003c\/b\u003e HUUM's manual limits one side panel, finish included, to 44.1 lb (20 kg), caps the fixing screw diameter at 4.2 mm, and asks for at least a 1 inch (25 mm) air gap under the heater. It also advises connecting the wiring and checking the heater works before you fit the finish, because a finished CORE is heavy and hard to turn. Use a material suitable for the sauna, and ask a specialist about fasteners. The horizontal finish and tile route in the manual's Appendix 2 fixes to mounting brackets that HUUM sells as an accessory.\u003c\/p\u003e\u003c\/div\u003e\n    \u003ch3\u003eIt can be sunk into the bench\u003c\/h3\u003e\n    \u003cp\u003eHUUM says the CORE may be embedded into the sauna bench in its full length, and describes its safety distances as small enough for various placement options. The manual's 2 in (50 mm) clearance to flammable material still applies, so keep that gap to the bench on every side.\u003c\/p\u003e\n    \u003ch3\u003eWhat changes at 9 kW\u003c\/h3\u003e\n    \u003cp\u003eThe output, the rated room and the circuit. HUUM's manual calls for a 50 amp breaker with 8 AWG cable, against 30 amps and 10 AWG for the CORE 6. The clearances, the body and the stone load stay the same.\u003c\/p\u003e\n\u003cp\u003eOn 208 volts it makes 6.75 kW for 212 to 354 cubic feet.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hcore9-tinted\" id=\"parts\"\u003e\n  \u003cdiv class=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n    \u003ch2\u003eWhat a working CORE 9 takes, beyond the heater\u003c\/h2\u003e\n    \u003cp class=\"hcore9-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=\"hcore9-tw\"\u003e\u003ctable class=\"hcore9-spec\"\u003e\n      \u003ccaption\u003eRequired to operate\u003c\/caption\u003e\n      \u003ctr class=\"hcore9-hl\"\u003e\n\u003cth\u003eThe heater\u003c\/th\u003e\n\u003ctd\u003eThis page, in the exterior and trim you choose.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eA certified control\u003c\/th\u003e\n\u003ctd\u003eHUUM's manual says any certified control panel may be used, and that it must have a timer function. HUUM's matched control is the UKU: 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      \u003ctr\u003e\n\u003cth\u003e3 boxes of stone\u003c\/th\u003e\n\u003ctd\u003eThe heater holds about 88.2 lb (40 kg), 2 to 4 inches (5 to 10 cm). \u003ca href=\"\/products\/huum-sauna-stones-5-10-cm\"\u003eHUUM olivine diabase sauna stones\u003c\/a\u003e come in 33 pound boxes, so 3 boxes covers it with a little to spare.\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's manual recommends a guard rail of a material with low heat capacity and poor thermal conductivity, and says the heater's minimum safety distances still have to be kept to a flammable guard. Check what your local code has adopted.\u003c\/p\u003e\n    \u003cdiv class=\"hcore9-warn\"\u003e\u003cp\u003eBuying the heater, the control and the stone together settles the order in one go. 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=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eElectrical\u003c\/p\u003e\n    \u003ch2\u003eThe breaker and wire size the HUUM CORE 9 needs\u003c\/h2\u003e\n    \u003cp class=\"hcore9-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    \u003cdiv class=\"hcore9-tw\"\u003e\u003ctable class=\"hcore9-ladder hcore9-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=\"hcore9-on\"\u003e\n\u003ctd class=\"hcore9-kw\"\u003e240 V\u003cspan class=\"hcore9-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=\"hcore9-kw\"\u003e208 V\u003c\/td\u003e\n\u003ctd\u003e6.75 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\u003eA means of disconnecting all poles, a circuit breaker, goes on the power circuit before the sauna control. Crimping the cable ends is mandatory, cable with non heat resistant PVC insulation is not allowed, and a junction box in the sauna room must be waterproof and no higher than 19 11\/16 inches (50 cm) from the floor. The power cable enters through the bottom cover.\u003c\/p\u003e\n    \u003cdiv class=\"hcore9-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\/25\/SUW\/00121X covers the CORE 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=\"hcore9-tinted\" id=\"install\"\u003e\n  \u003cdiv class=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eClearances\u003c\/p\u003e\n    \u003ch2\u003eWhere the HUUM CORE 9 can go\u003c\/h2\u003e\n    \u003cp class=\"hcore9-lead\"\u003eAll three CORE sizes share one set of clearances in HUUM's manual, and they are small.\u003c\/p\u003e\n    \u003cdiv class=\"hcore9-tw\"\u003e\u003ctable class=\"hcore9-spec\"\u003e\n      \u003ccaption\u003eMinimum distances, CORE 9\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eTo the walls around the heater\u003c\/th\u003e\n\u003ctd\u003e2 in (50 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAbove the heater, to the ceiling\u003c\/th\u003e\n\u003ctd\u003e43.3 in (1100 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAir gap under the heater\u003c\/th\u003e\n\u003ctd\u003e1 in (25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eHeater size, HUUM's table\u003c\/th\u003e\n\u003ctd\u003e15.16 in W x 15.16 in D x 32.7 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e41.9 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 brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eHUUM's manual has the CORE anchored to the floor with brackets on the heater legs, fixed with a suitable screw, preferably at least 6 x 40 mm. On the unfinished and wood versions, the final outside size depends on the exterior fitted.\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=\"hcore9-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black-in-sauna_712c1722-805e-4968-b5f9-ce74170faee3.jpg?width=1200\" alt=\"HUUM CORE Black in a barrel sauna\" width=\"896\" height=\"896\" 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=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eStone\u003c\/p\u003e\n    \u003ch2\u003eHow much stone the CORE 9 takes, and how to lay it\u003c\/h2\u003e\n    \u003cp class=\"hcore9-lead\"\u003eThe stone is not a finishing touch. It is the thermal mass that turns 9 kW into steam, and the heater may be used only when it has been correctly filled.\u003c\/p\u003e\n    \u003cp\u003eHUUM's manual says the heater holds about \u003cstrong\u003e88.2 lb (40 kg)\u003c\/strong\u003e of stone 2 to 4 inches (5 to 10 cm) across. That is \u003cstrong\u003e3 boxes\u003c\/strong\u003e of HUUM's 33 pound olivine diabase, with a little left over.\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 surface goes close together, and no element may be left visible. HUUM strongly recommends having a specialist lay the stone, and allows ceramic stones only at your own risk.\u003c\/p\u003e\n    \u003cdiv class=\"hcore9-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's manual warns that a too sparsely filled stone container causes a fire hazard,\u003c\/b\u003e and that defects caused by unsuitable stone are not covered by the warranty.\u003c\/p\u003e\u003c\/div\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hcore9-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black-top_00ba0ce2-e739-4caf-b919-4e2884bfbfe8.jpg?width=1200\" alt=\"Stones in the top of a HUUM CORE Black\" width=\"800\" height=\"800\" 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=\"hcore9-tinted\" id=\"costs\"\u003e\n  \u003cdiv class=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eRunning cost\u003c\/p\u003e\n    \u003ch2\u003eWhat the CORE 9 costs to run\u003c\/h2\u003e\n    \u003cp class=\"hcore9-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=\"hcore9-tw\"\u003e\u003ctable class=\"hcore9-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=\"hcore9-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=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n    \u003ch2\u003eIn the CORE 9 carton\u003c\/h2\u003e\n    \u003cdiv class=\"hcore9-pairup\"\u003e\n      \u003cdiv\u003e\n        \u003cul class=\"hcore9-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\u003cli\u003eUnfinished and wood versions: 4 unfinished metal shields, 4 cover strips and their screws\u003c\/li\u003e\n\u003cli\u003eWood versions: 4 wood panels and their fastening screws\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 3 boxes of stone are required to operate the heater. On the unfinished version, the exterior is yours to supply.\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=\"hcore9-tinted\" id=\"specs\"\u003e\n  \u003cdiv class=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eReference\u003c\/p\u003e\n    \u003ch2\u003eHUUM CORE 9 specifications\u003c\/h2\u003e\n    \u003cdetails class=\"hcore9-more\" open\u003e\n      \u003csummary\u003eFull specification tables\u003c\/summary\u003e\n      \u003cdiv class=\"hcore9-tw\"\u003e\u003ctable class=\"hcore9-spec\"\u003e\n\u003ccaption\u003eFrom the CORE user manual US 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, 6.75 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 cu. ft. at 240 V, 212 to 354 cu. ft. at 208 V (after the cold-wall adjustment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum room height\u003c\/th\u003e\n\u003ctd\u003e80 in (2030 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 88.2 lb (40 kg), 3 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone size\u003c\/th\u003e\n\u003ctd\u003e2 to 4 in (5 to 10 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater size\u003c\/th\u003e\n\u003ctd\u003e15.16 in W x 15.16 in D x 32.7 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the walls\u003c\/th\u003e\n\u003ctd\u003e2 in (50 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance above the heater\u003c\/th\u003e\n\u003ctd\u003e43.3 in (1100 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAir gap under the heater\u003c\/th\u003e\n\u003ctd\u003e1 in (25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eSeparate certified control with a timer function, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n      \u003cdiv class=\"hcore9-tw\"\u003e\u003ctable class=\"hcore9-spec\"\u003e\n\u003ccaption\u003eOptions, certification and warranty\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eExteriors\u003c\/th\u003e\n\u003ctd\u003eBlack, unfinished, alder, aspen, thermo-aspen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTop trim\u003c\/th\u003e\n\u003ctd\u003eBlack or stainless steel (Black exterior: black only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e41.9 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e240 V or 208 V, 50\/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\/25\/SUW\/00121X)\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=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eThe range\u003c\/p\u003e\n    \u003ch2\u003eHUUM CORE 9 against the rest of the CORE range\u003c\/h2\u003e\n    \u003cp class=\"hcore9-lead\"\u003eAll three share one body, one set of clearances, one stone load and the same five exteriors. Every 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=\"hcore9-tw hcore9-tw--scroll\"\u003e\u003ctable class=\"hcore9-cmp\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-core-6-electric-sauna-heater\"\u003e\u003cspan class=\"hcore9-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcore9-cmp-m\"\u003eCORE 6\u003c\/span\u003e\u003cspan class=\"hcore9-cmp-here\"\u003e6.5 kW, 177 to 318 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth class=\"hcore9-me\"\u003e\n\u003cspan class=\"hcore9-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcore9-cmp-m\"\u003eCORE 9\u003c\/span\u003e\u003cspan class=\"hcore9-cmp-here\"\u003eYou are here\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-core-11-electric-sauna-heater\"\u003e\u003cspan class=\"hcore9-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcore9-cmp-m\"\u003eCORE 11\u003c\/span\u003e\u003cspan class=\"hcore9-cmp-here\"\u003e10.5 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\u003e6.5 kW\u003c\/td\u003e\n\u003ctd class=\"hcore9-me\"\u003e9 kW\u003c\/td\u003e\n\u003ctd\u003e10.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated room\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003ctd class=\"hcore9-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\u003e25 A\u003c\/td\u003e\n\u003ctd class=\"hcore9-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\u003e30 A\u003c\/td\u003e\n\u003ctd class=\"hcore9-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\u003e10 AWG\u003c\/td\u003e\n\u003ctd class=\"hcore9-me\"\u003e8 AWG\u003c\/td\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd class=\"hcore9-me\"\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhen a CORE is the wrong heater\u003c\/h3\u003e\n    \u003cp\u003eThe CORE tops out at 10.5 kW and 566 cubic feet. For a bigger room, the \u003ca href=\"\/products\/huum-hive-12-electric-sauna-heater\"\u003eHUUM HIVE\u003c\/a\u003e goes to 18 kW. Compare 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=\"hcore9-c\"\u003e\n    \u003cp class=\"hcore9-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n    \u003ch2\u003eHUUM CORE 9 questions buyers ask before ordering\u003c\/h2\u003e\n    \u003cdiv class=\"hcore9-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat size sauna will the HUUM CORE 9 heat?\u003c\/summary\u003e\u003cdiv class=\"hcore9-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\u003eWhich CORE exterior should I choose?\u003c\/summary\u003e\u003cdiv class=\"hcore9-fb\"\u003e\u003cp\u003eBlack is HUUM's finished black metal case, with a black top trim. Unfinished is the caseless heater you clad yourself in wood slats, tile, stone or glass, following the manual's finishing appendices. Alder, aspen and thermo-aspen are the unfinished heater with HUUM's wood panels in the box. The unfinished and wood versions come with a black or stainless steel top trim.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM CORE 9 come with a control?\u003c\/summary\u003e\u003cdiv class=\"hcore9-fb\"\u003e\u003cp\u003eNo. It needs a separate certified control with a timer function, bought separately. HUUM's matched control is the UKU, in Local or Wi-Fi form, and at this output it runs from the UKU's main module without the extension box.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many boxes of stone does the HUUM CORE 9 need?\u003c\/summary\u003e\u003cdiv class=\"hcore9-fb\"\u003e\u003cp\u003e3 boxes. HUUM's manual says the heater holds about 88.2 lb (40 kg) of stone 2 to 4 inches across, and HUUM's olivine diabase comes in 33 pound boxes. The heater may be used only when it has been correctly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat breaker and wire does the HUUM CORE 9 need?\u003c\/summary\u003e\u003cdiv class=\"hcore9-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. 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 CORE 9 UL listed?\u003c\/summary\u003e\u003cdiv class=\"hcore9-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 CORE 9 for the United States and Canada under certificate SGSNA\/25\/SUW\/00121X, 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 powered and controlled by a certified controller and the wiring to that controller follows the National Electrical Code. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the SGS directory record for it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I finish the unfinished CORE myself?\u003c\/summary\u003e\u003cdiv class=\"hcore9-fb\"\u003e\u003cp\u003eYes, that is what it is for. HUUM's manual limits each side panel, finish included, to 44.1 lb (20 kg), caps the screw diameter at 4.2 mm, and asks for a 1 inch (25 mm) air gap under the heater. Use a material suitable for the sauna, and connect and test the wiring before you fit the finish.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install the HUUM CORE 9 myself?\u003c\/summary\u003e\u003cdiv class=\"hcore9-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 strongly recommends a specialist lays the stone. The heater is hardwired, crimped cable ends are mandatory 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 CORE 9 need a GFCI breaker?\u003c\/summary\u003e\u003cdiv class=\"hcore9-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\u003eWhat warranty comes with the HUUM CORE 9?\u003c\/summary\u003e\u003cdiv class=\"hcore9-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.\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=\"hcore9-close\" id=\"order\"\u003e\n\u003cdiv class=\"hcore9-c\"\u003e\n\u003cp class=\"hcore9-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the CORE 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=\"hcore9-who\"\u003e\n\u003cimg class=\"hcore9-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=\"hcore9-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hcore9-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":"Black","offer_id":53514543333743,"sku":"H1013082","price":2195.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim","offer_id":53514543432047,"sku":"H1013022+H3013011","price":2940.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, stainless trim","offer_id":53514543464815,"sku":"H1013052+H3013011","price":2940.0,"currency_code":"USD","in_stock":true},{"title":"Aspen wood, black trim","offer_id":53514543497583,"sku":"H1013022+H3013031","price":2940.0,"currency_code":"USD","in_stock":true},{"title":"Aspen wood, stainless trim","offer_id":53514543530351,"sku":"H1013052+H3013031","price":2940.0,"currency_code":"USD","in_stock":true},{"title":"Thermo-Aspen wood, black trim","offer_id":53514543563119,"sku":"H1013022+H3013021","price":3062.0,"currency_code":"USD","in_stock":true},{"title":"Thermo-Aspen wood, stainless trim","offer_id":53514543923567,"sku":"H1013052+H3013021","price":3062.0,"currency_code":"USD","in_stock":true},{"title":"Unfinished, black trim","offer_id":53514543366511,"sku":"H1013022","price":2000.0,"currency_code":"USD","in_stock":true},{"title":"Unfinished, stainless trim","offer_id":53514543399279,"sku":"H1013052","price":2000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black_d5956cba-c849-44d2-8a9f-928a92ed9274.jpg?v=1790070185"},{"product_id":"huum-core-11-electric-sauna-heater","title":"HUUM CORE 11 Electric Sauna Heater, 10.5 kW","description":"\u003cstyle\u003e.hcore11{--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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(max-width:560px){.hcore11 .hcore11-ladder thead{position:absolute;left:-9999px}.hcore11 .hcore11-ladder tr{display:block;border-bottom:1px solid var(--rule);padding:14px var(--gut)}.hcore11 .hcore11-ladder tr.hcore11-on{background:var(--hl)}.hcore11 .hcore11-ladder td{display:block;border:0;padding:0}.hcore11 .hcore11-ladder td:last-child{text-align:left;font-size:15.5px;margin-top:8px}}.hcore11 .hcore11-hl td,.hcore11 .hcore11-hl th,.hcore11 .hcore11-ladder tr.hcore11-on td,.hcore11 table.hcore11-cmp td.hcore11-me{border-bottom-color:var(--edge)}@media screen and (max-width:840px){.hcore11 table.hcore11-cmp thead a{min-height:44px;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:2px}}.rte .hcore11 table th,.rte .hcore11 table td{padding:11px var(--gut)}.hcore11 .hcore11-ladder th:last-child,.hcore11 .hcore11-ladder td:last-child{text-align:left;white-space:normal;overflow-wrap:anywhere}.hcore11 .hcore11-buy{align-items:start}.hcore11 .hcore11-buy li span a{display:inline-block;padding:16px 0;margin:-16px 0}.hcore11 table.hcore11-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)}.hcore11 table.hcore11-cmp thead th:first-child{position:sticky;left:0;z-index:2;background:var(--fill)}@media screen and (max-width:560px){.hcore11 .hcore11-ladder td:last-child::before{content:\"Nameplate draw:\\00a0\";font-weight:700;color:var(--ink)}}@media screen and (max-width:480px){.hcore11 table.hcore11-spec th,.hcore11 table.hcore11-spec td{display:block;width:auto}.hcore11 table.hcore11-spec th{border-bottom:0;padding-bottom:0}}.hcore11 .hcore11-vid .video-wrapper{position:absolute !important;inset:0;width:100%;height:100%;padding:0 !important;margin:0}.hcore11 .hcore11-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.hcore11 .hcore11-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.hcore11 .hcore11-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.hcore11 .hcore11-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.hcore11 .hcore11-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}.hcore11 .hcore11-close p.hcore11-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hcore11 .hcore11-stat3 a{color:var(--bright)}.hcore11 .hcore11-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hcore11 .hcore11-cmp thead a .hcore11-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hcore11 .hcore11-ladder.hcore11-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hcore11 .hcore11-ladder.hcore11-out td:last-child::before{content:\"Output:\\00a0\"}}.hcore11 .hcore11-tw + p,.hcore11 .hcore11-tw + h3,.hcore11 .hcore11-warn + p,.hcore11 .hcore11-warn + h3,.hcore11 .hcore11-more + p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hcore11\"\u003e\n\u003csection id=\"overview\"\u003e\n  \u003cdiv class=\"hcore11-c\"\u003e\n    \u003cdetails class=\"hcore11-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hcore11-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=\"hcore11-eyebrow\"\u003eThe largest CORE\u003c\/p\u003e\n    \u003ch2\u003eThe HUUM CORE 11 is a 10.5 kW floor standing electric sauna heater for rooms of 354 to 566 cubic feet\u003c\/h2\u003e\n    \u003cp class=\"hcore11-lead\"\u003e10.5 kilowatts for rooms of 354 to 566 cubic feet, the top of the CORE range, still on one circuit and still inside what the UKU control's main module carries on its own.\u003c\/p\u003e\n    \u003cdiv class=\"hcore11-stat3\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hcore11-lbl\"\u003eThe room\u003c\/p\u003e\n        \u003cp class=\"hcore11-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=\"hcore11-lbl\"\u003eRated current\u003c\/p\u003e\n        \u003cp class=\"hcore11-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. 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=\"hcore11-lbl\"\u003eThe rest of the order\u003c\/p\u003e\n        \u003cp class=\"hcore11-big\"\u003eControl and 3 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 the heater holds about 88.2 lb of \u003ca href=\"\/products\/huum-sauna-stones-5-10-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=\"hcore11-tinted\" id=\"fit\"\u003e\n  \u003cdiv class=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eSizing\u003c\/p\u003e\n    \u003ch2\u003eWill the HUUM CORE 11 heat your sauna?\u003c\/h2\u003e\n    \u003cp class=\"hcore11-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 CORE 11 for \u003cstrong\u003e354 to 566 cubic feet\u003c\/strong\u003e on a 240 volt supply, and its manual warns that the warranty is not valid if the heater output does not match the calculated room volume.\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=\"hcore11-tw\"\u003e\u003ctable class=\"hcore11-ladder hcore11-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=\"hcore11-kw\"\u003eCORE 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\u003e6.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hcore11-kw\"\u003eCORE 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=\"hcore11-on\"\u003e\n\u003ctd class=\"hcore11-kw\"\u003eCORE 11 \u003cspan class=\"hcore11-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\u003e10.5 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 CORE 11\u003c\/h3\u003e\n    \u003cp\u003eTake a room 10 feet by 7.5 feet with a 7 foot ceiling: 75 square feet of floor and 525 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 568 cubic feet, which is past the top of the CORE 11's range.\u003c\/p\u003e\n    \u003cdiv class=\"hcore11-warn\"\u003e\u003cp\u003e\u003cb\u003eThe minimum sauna room height for a CORE is 80 inches (2030 mm).\u003c\/b\u003e HUUM recommends 80 to 91 inches and asks for 44 to 51 inches between the top bench and the ceiling. For a taller room, HUUM advises lowering the ceiling 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=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eFive exteriors, two trims\u003c\/p\u003e\n    \u003ch2\u003eChoosing the exterior of the CORE 11\u003c\/h2\u003e\n    \u003cp class=\"hcore11-lead\"\u003eThe CORE is a square heater with its stone in an open top. HUUM makes it in a black metal case, or without a case to clad in ceramic tile, stone, glass or wood, as HUUM puts it, and HUUM lists it as a European Product Design Award winner.\u003c\/p\u003e\n    \u003cdiv class=\"hcore11-block\"\u003e\n        \u003ch3\u003eBlack\u003c\/h3\u003e\n        \u003cp\u003eHUUM's finished version, in what it calls a sleek black metal casing. It comes with a black top trim only.\u003c\/p\u003e\n        \u003ch3\u003eUnfinished, to finish yourself\u003c\/h3\u003e\n        \u003cp\u003eThe caseless CORE, which HUUM describes as allowing easy customization. It ships with 4 unfinished metal shields, 4 cover strips and their screws, and the manual's two appendices show slat finishes and tile. Choose a black or stainless steel top trim.\u003c\/p\u003e\n        \u003ch3\u003eAlder, aspen or thermo-aspen\u003c\/h3\u003e\n        \u003cp\u003eThe unfinished CORE with HUUM's own wood panels. The 4 panels and their fastening screws come in the box and fit to the metal shields. Each comes with a black or stainless steel top trim.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cfigure\u003e\u003cdiv class=\"hcore11-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black_d799308c-ffe8-40d9-984b-79269c986b10.jpg?v=1790070226\u0026amp;width=1200\" alt=\"HUUM CORE floor standing electric sauna heater, Black exterior, with its stones laid\" width=\"1084\" height=\"1084\" loading=\"eager\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe HUUM CORE in its Black exterior.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003cdiv class=\"hcore11-warn\"\u003e\u003cp\u003e\u003cb\u003eFinishing it yourself has rules.\u003c\/b\u003e HUUM's manual limits one side panel, finish included, to 44.1 lb (20 kg), caps the fixing screw diameter at 4.2 mm, and asks for at least a 1 inch (25 mm) air gap under the heater. It also advises connecting the wiring and checking the heater works before you fit the finish, because a finished CORE is heavy and hard to turn. Use a material suitable for the sauna, and ask a specialist about fasteners. The horizontal finish and tile route in the manual's Appendix 2 fixes to mounting brackets that HUUM sells as an accessory.\u003c\/p\u003e\u003c\/div\u003e\n    \u003ch3\u003eIt can be sunk into the bench\u003c\/h3\u003e\n    \u003cp\u003eHUUM says the CORE may be embedded into the sauna bench in its full length, and describes its safety distances as small enough for various placement options. The manual's 2 in (50 mm) clearance to flammable material still applies, so keep that gap to the bench on every side.\u003c\/p\u003e\n    \u003ch3\u003eWhere the CORE 11 sits\u003c\/h3\u003e\n    \u003cp\u003eAt 10.5 kW it stays under the 11 kW the UKU's main module carries, so it needs no extension box. HUUM's manual calls for a 50 amp breaker with 8 AWG cable.\u003c\/p\u003e\n\u003cp\u003eOn 208 volts it makes 7.9 kW for 265 to 424 cubic feet.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hcore11-tinted\" id=\"parts\"\u003e\n  \u003cdiv class=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n    \u003ch2\u003eWhat a working CORE 11 takes, beyond the heater\u003c\/h2\u003e\n    \u003cp class=\"hcore11-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=\"hcore11-tw\"\u003e\u003ctable class=\"hcore11-spec\"\u003e\n      \u003ccaption\u003eRequired to operate\u003c\/caption\u003e\n      \u003ctr class=\"hcore11-hl\"\u003e\n\u003cth\u003eThe heater\u003c\/th\u003e\n\u003ctd\u003eThis page, in the exterior and trim you choose.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eA certified control\u003c\/th\u003e\n\u003ctd\u003eHUUM's manual says any certified control panel may be used, and that it must have a timer function. HUUM's matched control is the UKU: 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      \u003ctr\u003e\n\u003cth\u003e3 boxes of stone\u003c\/th\u003e\n\u003ctd\u003eThe heater holds about 88.2 lb (40 kg), 2 to 4 inches (5 to 10 cm). \u003ca href=\"\/products\/huum-sauna-stones-5-10-cm\"\u003eHUUM olivine diabase sauna stones\u003c\/a\u003e come in 33 pound boxes, so 3 boxes covers it with a little to spare.\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's manual recommends a guard rail of a material with low heat capacity and poor thermal conductivity, and says the heater's minimum safety distances still have to be kept to a flammable guard. Check what your local code has adopted.\u003c\/p\u003e\n    \u003cdiv class=\"hcore11-warn\"\u003e\u003cp\u003eBuying the heater, the control and the stone together settles the order in one go. 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=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eElectrical\u003c\/p\u003e\n    \u003ch2\u003eThe breaker and wire size the HUUM CORE 11 needs\u003c\/h2\u003e\n    \u003cp class=\"hcore11-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    \u003cdiv class=\"hcore11-tw\"\u003e\u003ctable class=\"hcore11-ladder hcore11-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=\"hcore11-on\"\u003e\n\u003ctd class=\"hcore11-kw\"\u003e240 V\u003cspan class=\"hcore11-tag\"\u003eMost homes\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e10.5 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=\"hcore11-kw\"\u003e208 V\u003c\/td\u003e\n\u003ctd\u003e7.9 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\u003eA means of disconnecting all poles, a circuit breaker, goes on the power circuit before the sauna control. Crimping the cable ends is mandatory, cable with non heat resistant PVC insulation is not allowed, and a junction box in the sauna room must be waterproof and no higher than 19 11\/16 inches (50 cm) from the floor. The power cable enters through the bottom cover.\u003c\/p\u003e\n    \u003cdiv class=\"hcore11-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\/25\/SUW\/00121X covers the CORE 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=\"hcore11-tinted\" id=\"install\"\u003e\n  \u003cdiv class=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eClearances\u003c\/p\u003e\n    \u003ch2\u003eWhere the HUUM CORE 11 can go\u003c\/h2\u003e\n    \u003cp class=\"hcore11-lead\"\u003eAll three CORE sizes share one set of clearances in HUUM's manual, and they are small.\u003c\/p\u003e\n    \u003cdiv class=\"hcore11-tw\"\u003e\u003ctable class=\"hcore11-spec\"\u003e\n      \u003ccaption\u003eMinimum distances, CORE 11\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eTo the walls around the heater\u003c\/th\u003e\n\u003ctd\u003e2 in (50 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAbove the heater, to the ceiling\u003c\/th\u003e\n\u003ctd\u003e43.3 in (1100 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAir gap under the heater\u003c\/th\u003e\n\u003ctd\u003e1 in (25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eHeater size, HUUM's table\u003c\/th\u003e\n\u003ctd\u003e15.16 in W x 15.16 in D x 32.7 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e41.9 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 brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eHUUM's manual has the CORE anchored to the floor with brackets on the heater legs, fixed with a suitable screw, preferably at least 6 x 40 mm. On the unfinished and wood versions, the final outside size depends on the exterior fitted.\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=\"hcore11-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black-in-sauna_f8b1767a-2bab-4cf5-aca7-b67373563baa.jpg?width=1200\" alt=\"HUUM CORE Black in a barrel sauna\" width=\"896\" height=\"896\" 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=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eStone\u003c\/p\u003e\n    \u003ch2\u003eHow much stone the CORE 11 takes, and how to lay it\u003c\/h2\u003e\n    \u003cp class=\"hcore11-lead\"\u003eThe stone is not a finishing touch. It is the thermal mass that turns 10.5 kW into steam, and the heater may be used only when it has been correctly filled.\u003c\/p\u003e\n    \u003cp\u003eHUUM's manual says the heater holds about \u003cstrong\u003e88.2 lb (40 kg)\u003c\/strong\u003e of stone 2 to 4 inches (5 to 10 cm) across. That is \u003cstrong\u003e3 boxes\u003c\/strong\u003e of HUUM's 33 pound olivine diabase, with a little left over.\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 surface goes close together, and no element may be left visible. HUUM strongly recommends having a specialist lay the stone, and allows ceramic stones only at your own risk.\u003c\/p\u003e\n    \u003cdiv class=\"hcore11-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's manual warns that a too sparsely filled stone container causes a fire hazard,\u003c\/b\u003e and that defects caused by unsuitable stone are not covered by the warranty.\u003c\/p\u003e\u003c\/div\u003e\n  \u003cfigure\u003e\u003cdiv class=\"hcore11-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black-top_5f82e77d-fefa-4674-8666-4f50d1bb456a.jpg?width=1200\" alt=\"Stones in the top of a HUUM CORE Black\" width=\"800\" height=\"800\" 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=\"hcore11-tinted\" id=\"costs\"\u003e\n  \u003cdiv class=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eRunning cost\u003c\/p\u003e\n    \u003ch2\u003eWhat the CORE 11 costs to run\u003c\/h2\u003e\n    \u003cp class=\"hcore11-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=\"hcore11-tw\"\u003e\u003ctable class=\"hcore11-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\u003e10.5 kW x 0.183 = about 1.92 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 5.76 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree of those a week\u003c\/th\u003e\n\u003ctd\u003eabout 17 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=\"hcore11-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=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n    \u003ch2\u003eIn the CORE 11 carton\u003c\/h2\u003e\n    \u003cdiv class=\"hcore11-pairup\"\u003e\n      \u003cdiv\u003e\n        \u003cul class=\"hcore11-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\u003cli\u003eUnfinished and wood versions: 4 unfinished metal shields, 4 cover strips and their screws\u003c\/li\u003e\n\u003cli\u003eWood versions: 4 wood panels and their fastening screws\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 3 boxes of stone are required to operate the heater. On the unfinished version, the exterior is yours to supply.\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=\"hcore11-tinted\" id=\"specs\"\u003e\n  \u003cdiv class=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eReference\u003c\/p\u003e\n    \u003ch2\u003eHUUM CORE 11 specifications\u003c\/h2\u003e\n    \u003cdetails class=\"hcore11-more\" open\u003e\n      \u003csummary\u003eFull specification tables\u003c\/summary\u003e\n      \u003cdiv class=\"hcore11-tw\"\u003e\u003ctable class=\"hcore11-spec\"\u003e\n\u003ccaption\u003eFrom the CORE user manual US v9 (November 2025), Tables 1 to 3\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater output\u003c\/th\u003e\n\u003ctd\u003e10.5 kW at 240 V, 7.9 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 cu. ft. at 240 V, 265 to 424 cu. ft. at 208 V (after the cold-wall adjustment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum room height\u003c\/th\u003e\n\u003ctd\u003e80 in (2030 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 88.2 lb (40 kg), 3 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone size\u003c\/th\u003e\n\u003ctd\u003e2 to 4 in (5 to 10 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater size\u003c\/th\u003e\n\u003ctd\u003e15.16 in W x 15.16 in D x 32.7 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the walls\u003c\/th\u003e\n\u003ctd\u003e2 in (50 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance above the heater\u003c\/th\u003e\n\u003ctd\u003e43.3 in (1100 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAir gap under the heater\u003c\/th\u003e\n\u003ctd\u003e1 in (25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eSeparate certified control with a timer function, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n      \u003cdiv class=\"hcore11-tw\"\u003e\u003ctable class=\"hcore11-spec\"\u003e\n\u003ccaption\u003eOptions, certification and warranty\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eExteriors\u003c\/th\u003e\n\u003ctd\u003eBlack, unfinished, alder, aspen, thermo-aspen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTop trim\u003c\/th\u003e\n\u003ctd\u003eBlack or stainless steel (Black exterior: black only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e41.9 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e240 V or 208 V, 50\/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\/25\/SUW\/00121X)\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=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eThe range\u003c\/p\u003e\n    \u003ch2\u003eHUUM CORE 11 against the rest of the CORE range\u003c\/h2\u003e\n    \u003cp class=\"hcore11-lead\"\u003eAll three share one body, one set of clearances, one stone load and the same five exteriors. Every 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=\"hcore11-tw hcore11-tw--scroll\"\u003e\u003ctable class=\"hcore11-cmp\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-core-6-electric-sauna-heater\"\u003e\u003cspan class=\"hcore11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcore11-cmp-m\"\u003eCORE 6\u003c\/span\u003e\u003cspan class=\"hcore11-cmp-here\"\u003e6.5 kW, 177 to 318 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-core-9-electric-sauna-heater\"\u003e\u003cspan class=\"hcore11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcore11-cmp-m\"\u003eCORE 9\u003c\/span\u003e\u003cspan class=\"hcore11-cmp-here\"\u003e9 kW, 283 to 460 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth class=\"hcore11-me\"\u003e\n\u003cspan class=\"hcore11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcore11-cmp-m\"\u003eCORE 11\u003c\/span\u003e\u003cspan class=\"hcore11-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\u003e6.5 kW\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd class=\"hcore11-me\"\u003e10.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated room\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=\"hcore11-me\"\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent\u003c\/td\u003e\n\u003ctd\u003e25 A\u003c\/td\u003e\n\u003ctd\u003e37.5 A\u003c\/td\u003e\n\u003ctd class=\"hcore11-me\"\u003e43.75 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaker\u003c\/td\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd class=\"hcore11-me\"\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum cable\u003c\/td\u003e\n\u003ctd\u003e10 AWG\u003c\/td\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003ctd class=\"hcore11-me\"\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd class=\"hcore11-me\"\u003e3 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhen a CORE is the wrong heater\u003c\/h3\u003e\n    \u003cp\u003eThe CORE tops out at 10.5 kW and 566 cubic feet. For a bigger room, the \u003ca href=\"\/products\/huum-hive-12-electric-sauna-heater\"\u003eHUUM HIVE\u003c\/a\u003e goes to 18 kW. Compare 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=\"hcore11-c\"\u003e\n    \u003cp class=\"hcore11-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n    \u003ch2\u003eHUUM CORE 11 questions buyers ask before ordering\u003c\/h2\u003e\n    \u003cdiv class=\"hcore11-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat size sauna will the HUUM CORE 11 heat?\u003c\/summary\u003e\u003cdiv class=\"hcore11-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\u003eWhich CORE exterior should I choose?\u003c\/summary\u003e\u003cdiv class=\"hcore11-fb\"\u003e\u003cp\u003eBlack is HUUM's finished black metal case, with a black top trim. Unfinished is the caseless heater you clad yourself in wood slats, tile, stone or glass, following the manual's finishing appendices. Alder, aspen and thermo-aspen are the unfinished heater with HUUM's wood panels in the box. The unfinished and wood versions come with a black or stainless steel top trim.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM CORE 11 come with a control?\u003c\/summary\u003e\u003cdiv class=\"hcore11-fb\"\u003e\u003cp\u003eNo. It needs a separate certified control with a timer function, bought separately. HUUM's matched control is the UKU, in Local or Wi-Fi form, and at this output it runs from the UKU's main module without the extension box.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many boxes of stone does the HUUM CORE 11 need?\u003c\/summary\u003e\u003cdiv class=\"hcore11-fb\"\u003e\u003cp\u003e3 boxes. HUUM's manual says the heater holds about 88.2 lb (40 kg) of stone 2 to 4 inches across, and HUUM's olivine diabase comes in 33 pound boxes. The heater may be used only when it has been correctly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat breaker and wire does the HUUM CORE 11 need?\u003c\/summary\u003e\u003cdiv class=\"hcore11-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. 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 CORE 11 UL listed?\u003c\/summary\u003e\u003cdiv class=\"hcore11-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 CORE 11 for the United States and Canada under certificate SGSNA\/25\/SUW\/00121X, 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 powered and controlled by a certified controller and the wiring to that controller follows the National Electrical Code. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the SGS directory record for it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I finish the unfinished CORE myself?\u003c\/summary\u003e\u003cdiv class=\"hcore11-fb\"\u003e\u003cp\u003eYes, that is what it is for. HUUM's manual limits each side panel, finish included, to 44.1 lb (20 kg), caps the screw diameter at 4.2 mm, and asks for a 1 inch (25 mm) air gap under the heater. Use a material suitable for the sauna, and connect and test the wiring before you fit the finish.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install the HUUM CORE 11 myself?\u003c\/summary\u003e\u003cdiv class=\"hcore11-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 strongly recommends a specialist lays the stone. The heater is hardwired, crimped cable ends are mandatory 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 CORE 11 need a GFCI breaker?\u003c\/summary\u003e\u003cdiv class=\"hcore11-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\u003eWhat warranty comes with the HUUM CORE 11?\u003c\/summary\u003e\u003cdiv class=\"hcore11-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.\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=\"hcore11-close\" id=\"order\"\u003e\n\u003cdiv class=\"hcore11-c\"\u003e\n\u003cp class=\"hcore11-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the CORE 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=\"hcore11-who\"\u003e\n\u003cimg class=\"hcore11-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=\"hcore11-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hcore11-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":"Black","offer_id":53514564141423,"sku":"H1013092","price":2343.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim","offer_id":53514564239727,"sku":"H1013032+H3013011","price":3075.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, stainless trim","offer_id":53514564272495,"sku":"H1013062+H3013011","price":3075.0,"currency_code":"USD","in_stock":true},{"title":"Aspen wood, black trim","offer_id":53514564305263,"sku":"H1013032+H3013031","price":3075.0,"currency_code":"USD","in_stock":true},{"title":"Aspen wood, stainless trim","offer_id":53514564338031,"sku":"H1013062+H3013031","price":3075.0,"currency_code":"USD","in_stock":true},{"title":"Thermo-Aspen wood, black trim","offer_id":53514564370799,"sku":"H1013032+H3013021","price":3197.0,"currency_code":"USD","in_stock":true},{"title":"Thermo-Aspen wood, stainless trim","offer_id":53514564403567,"sku":"H1013062+H3013021","price":3197.0,"currency_code":"USD","in_stock":true},{"title":"Unfinished, black trim","offer_id":53514564174191,"sku":"H1013032","price":2135.0,"currency_code":"USD","in_stock":true},{"title":"Unfinished, stainless trim","offer_id":53514564206959,"sku":"H1013062","price":2135.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black_d799308c-ffe8-40d9-984b-79269c986b10.jpg?v=1790070226"},{"product_id":"huum-core-6-sauna-heater-package","title":"HUUM CORE 6 Sauna Heater Package, 6.5 kW | Exterior, UKU Control and 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and (max-width:560px){.hcore6pkg .hcore6pkg-ladder.hcore6pkg-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hcore6pkg .hcore6pkg-ladder.hcore6pkg-out td:last-child::before{content:\"Output:\\00a0\"}}.hcore6pkg .hcore6pkg-tw + p,.hcore6pkg .hcore6pkg-tw + h3,.hcore6pkg .hcore6pkg-warn + p,.hcore6pkg .hcore6pkg-warn + h3,.hcore6pkg .hcore6pkg-more + p{margin-top:24px}.hcore6pkg .hcore6pkg-vid iframe{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark)}\u003c\/style\u003e\n\u003cdiv class=\"hcore6pkg\"\u003e\n\u003csection id=\"overview\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n\u003cdetails class=\"hcore6pkg-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hcore6pkg-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=\"#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=\"#exterior\"\u003eThe case\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 CORE 6 Sauna Heater Package\u003c\/h2\u003e\n\u003cp class=\"hcore6pkg-lead\"\u003eA HUUM heater carton holds the heater and its fixings. No control, no stone. This package is the CORE 6 with a UKU control and the 3 boxes of stone HUUM's manual asks for, so nothing is missing when the electrician arrives.\u003c\/p\u003e\n\u003cul class=\"hcore6pkg-chk\"\u003e\n\u003cli\u003eThe HUUM CORE 6 sauna heater, 6.5 kW\u003c\/li\u003e\n\u003cli\u003eA HUUM UKU control, in the panel finish you pick above\u003c\/li\u003e\n\u003cli\u003e3 boxes of HUUM olivine diabase stone, 88.2 lb (40 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=\"hcore6pkg-stat3\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hcore6pkg-lbl\"\u003eOutput at 240 volts\u003c\/p\u003e\n\u003cp class=\"hcore6pkg-big\"\u003e6.5 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=\"hcore6pkg-lbl\"\u003eRoom it is rated for\u003c\/p\u003e\n\u003cp class=\"hcore6pkg-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=\"hcore6pkg-lbl\"\u003eStone included\u003c\/p\u003e\n\u003cp class=\"hcore6pkg-big\"\u003e3 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=\"hcore6pkg-tinted\" id=\"fit\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eSizing\u003c\/p\u003e\n\u003ch2\u003eWhich CORE package suits your room\u003c\/h2\u003e\n\u003cp class=\"hcore6pkg-lead\"\u003eEvery package in this series carries the same seven control choices and the same\ngrade of stone. What separates them is output and the room each one is rated for. The stone load is the same across the series, so a bigger package is more heat rather than more mass. There are 3 of them.\u003c\/p\u003e\n\u003cdiv class=\"hcore6pkg-tw\"\u003e\u003ctable class=\"hcore6pkg-ladder hcore6pkg-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=\"hcore6pkg-on\"\u003e\n\u003ctd class=\"hcore6pkg-kw\"\u003eCORE 6 \u003cspan class=\"hcore6pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hcore6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-core-9-sauna-heater-package\"\u003eCORE 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hcore6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-core-11-sauna-heater-package\"\u003eCORE 11\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e3 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 id=\"heater\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eThe heater\u003c\/p\u003e\n\u003ch2\u003eWhat the CORE 6 is rated for\u003c\/h2\u003e\n\u003cp class=\"hcore6pkg-lead\"\u003eHUUM rates the \u003ca href=\"\/products\/huum-core-6-electric-sauna-heater\"\u003eCORE 6 heater\u003c\/a\u003e for 177 to 318 cubic feet at 240 volts. It stands on the floor, and it measures 15.16 in wide, 15.16 in deep and 32.7 in tall. HUUM gives its stone capacity as 88.2 lb (40 kg), and \u003ca href=\"\/products\/huum-sauna-stones-5-10-cm\"\u003eits olivine diabase stone\u003c\/a\u003e comes in 33 pound boxes, so this package carries 3 of them.\u003c\/p\u003e\n\u003cp\u003eThe CORE is the only HUUM heater you finish yourself: black, one of three wood panel sets, or bare shields you clad in tile, stone, glass or timber. Underneath the case every CORE is the same heater.\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=\"hcore6pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black_da19f5a1-3faa-4757-a409-858604dde773.jpg?width=1200\" alt=\"HUUM CORE 6 sauna heater\" width=\"1084\" height=\"1084\" 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=\"hcore6pkg-tinted\" id=\"exterior\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eThe case\u003c\/p\u003e\n\u003ch2\u003eNine ways to finish the CORE 6\u003c\/h2\u003e\n\u003cp\u003eThe CORE is the only HUUM heater you case yourself. Pick the exterior at the top of this page and the price moves with it: black is HUUM's finished steel case, the wood options are 4 panels that fasten over the metal shields, and unfinished is 4 bare shields with cover strips, ready for the tile, stone, glass or timber you fit. The manual's finishing appendix sets out what the heater will take.\u003c\/p\u003e\n\u003cp\u003eThe top trim is the cover strip along the top rim, in black or stainless, and it costs the same either way. Black is the one exterior that comes with a black trim only. Whatever you choose, the heater underneath is the same, and so is the stone it holds and the circuit it needs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"control\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eThe control\u003c\/p\u003e\n\u003ch2\u003eWhich UKU comes in the package\u003c\/h2\u003e\n\u003cp class=\"hcore6pkg-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=\"hcore6pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-uku-black_487056ae-d42a-4409-b723-b7ed286c1869_ba119137-99aa-45cf-a416-a05cd629a56b.jpg?width=1200\" alt=\"HUUM UKU control, included in the package\" width=\"669\" height=\"770\" 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=\"hcore6pkg-tinted\" id=\"electrical\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eThe circuit\u003c\/p\u003e\n\u003ch2\u003e25 amps at 240 volts\u003c\/h2\u003e\n\u003cp class=\"hcore6pkg-lead\"\u003eThe CORE 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=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eStone\u003c\/p\u003e\n\u003ch2\u003eThe stone is already in the order\u003c\/h2\u003e\n\u003cp class=\"hcore6pkg-lead\"\u003eHUUM gives the CORE 6 a stone capacity of about 88.2 lb (40 kg). Its\n\u003ca href=\"\/products\/huum-sauna-stones-5-10-cm\"\u003eolivine diabase\u003c\/a\u003e is sold in 33 pound boxes, so this package carries 3 of\nthem, which covers it with a little left over.\u003c\/p\u003e\n\u003ch3\u003eWhy the grade is on the label\u003c\/h3\u003e\n\u003cp\u003eThis heater takes stone 2 to 4 inches (5 to 10 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=\"hcore6pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-sauna-stones-olivine_eb67c44f-f019-4c4b-9a62-2a1de5182677_a0a02e2c-5377-4959-8db0-6204da434674.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=\"hcore6pkg-tinted\" id=\"specs\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eSpecifications\u003c\/p\u003e\n\u003ch2\u003eWhat is in this package\u003c\/h2\u003e\n\u003cdiv class=\"hcore6pkg-tw\"\u003e\u003ctable class=\"hcore6pkg-spec\"\u003e\n\u003ccaption\u003eHUUM CORE 6 package reference\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater\u003c\/th\u003e\n\u003ctd\u003eHUUM CORE 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003ctd\u003e6.5 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\u003e15.16 x 15.16 x 32.7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e41.9 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\u003e43.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone in the package\u003c\/th\u003e\n\u003ctd\u003e3 boxes, 88.2 lb (40 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\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=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eThe alternatives\u003c\/p\u003e\n\u003ch2\u003eOther HUUM packages that cover a similar room\u003c\/h2\u003e\n\u003cp class=\"hcore6pkg-lead\"\u003eA room of this size does not tie you to one heater. These HUUM packages have a rated range that overlaps the CORE 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=\"hcore6pkg-tw\"\u003e\u003ctable class=\"hcore6pkg-ladder hcore6pkg-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=\"hcore6pkg-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=\"hcore6pkg-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=\"hcore6pkg-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=\"hcore6pkg-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\u003e\n\u003ctd class=\"hcore6pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-6-sauna-heater-package\"\u003eSTEEL 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=\"hcore6pkg-on\"\u003e\n\u003ctd class=\"hcore6pkg-kw\"\u003eCORE 6 \u003cspan class=\"hcore6pkg-tag\"\u003eThis package\u003c\/span\u003e\n\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=\"hcore6pkg-tinted\" id=\"crate\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n\u003ch2\u003eWhat arrives, and in how many boxes\u003c\/h2\u003e\n\u003cp class=\"hcore6pkg-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=\"hcore6pkg-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\u003e3 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=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eDelivery\u003c\/p\u003e\n\u003ch2\u003eHow the package arrives\u003c\/h2\u003e\n\u003cp class=\"hcore6pkg-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, 3 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=\"hcore6pkg-tinted\" id=\"faq\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\"\u003eQuestions\u003c\/p\u003e\n\u003ch2\u003eQuestions buyers ask about this package\u003c\/h2\u003e\n\u003cdiv class=\"hcore6pkg-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is in the HUUM CORE 6 package?\u003c\/summary\u003e\u003cdiv class=\"hcore6pkg-fb\"\u003e\u003cp\u003eThe CORE 6 heater, a HUUM UKU control in the panel finish you pick, and 3 boxes of HUUM olivine diabase stone, 88.2 lb (40 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=\"hcore6pkg-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 CORE 6 heat?\u003c\/summary\u003e\u003cdiv class=\"hcore6pkg-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=\"hcore6pkg-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 CORE 6 need?\u003c\/summary\u003e\u003cdiv class=\"hcore6pkg-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=\"hcore6pkg-fb\"\u003e\u003cp\u003eYes. HUUM gives the stone capacity as 88.2 lb (40 kg), and stone comes in 33 pound boxes, so the package carries 3. 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=\"hcore6pkg-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 CORE 6 listed for use in the United States?\u003c\/summary\u003e\u003cdiv class=\"hcore6pkg-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 CORE 6 for the United States and Canada under certificate SGSNA\/25\/SUW\/00121X, 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 powered and controlled by a certified controller and the wiring to that controller follows the National Electrical Code. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the SGS directory record for it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the package?\u003c\/summary\u003e\u003cdiv class=\"hcore6pkg-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 service parts, 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=\"hcore6pkg-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=\"hcore6pkg-close\" id=\"order\"\u003e\n\u003cdiv class=\"hcore6pkg-c\"\u003e\n\u003cp class=\"hcore6pkg-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the CORE 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=\"hcore6pkg-who\"\u003e\n\u003cimg class=\"hcore6pkg-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=\"hcore6pkg-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hcore6pkg-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":"Black \/ UKU Local, black","offer_id":53521207263599,"sku":"HUUM-PKG-CORE6-BK-LB","price":3383.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Local, thermo-ash wood","offer_id":53521207296367,"sku":"HUUM-PKG-CORE6-BK-LW","price":3696.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, black","offer_id":53521207329135,"sku":"HUUM-PKG-CORE6-BK-WB","price":3645.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, thermo-ash wood","offer_id":53521207361903,"sku":"HUUM-PKG-CORE6-BK-WW","price":3958.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, black glass","offer_id":53521207394671,"sku":"HUUM-PKG-CORE6-BK-WG","price":4045.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, 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and (max-width:560px){.hcore9pkg .hcore9pkg-ladder.hcore9pkg-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hcore9pkg .hcore9pkg-ladder.hcore9pkg-out td:last-child::before{content:\"Output:\\00a0\"}}.hcore9pkg .hcore9pkg-tw + p,.hcore9pkg .hcore9pkg-tw + h3,.hcore9pkg .hcore9pkg-warn + p,.hcore9pkg .hcore9pkg-warn + h3,.hcore9pkg .hcore9pkg-more + p{margin-top:24px}.hcore9pkg .hcore9pkg-vid iframe{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark)}\u003c\/style\u003e\n\u003cdiv class=\"hcore9pkg\"\u003e\n\u003csection id=\"overview\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n\u003cdetails class=\"hcore9pkg-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hcore9pkg-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=\"#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=\"#exterior\"\u003eThe case\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 CORE 9 Sauna Heater Package\u003c\/h2\u003e\n\u003cp class=\"hcore9pkg-lead\"\u003eA HUUM heater carton holds the heater and its fixings. No control, no stone. This package is the CORE 9 with a UKU control and the 3 boxes of stone HUUM's manual asks for, so nothing is missing when the electrician arrives.\u003c\/p\u003e\n\u003cul class=\"hcore9pkg-chk\"\u003e\n\u003cli\u003eThe HUUM CORE 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\u003e3 boxes of HUUM olivine diabase stone, 88.2 lb (40 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=\"hcore9pkg-stat3\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hcore9pkg-lbl\"\u003eOutput at 240 volts\u003c\/p\u003e\n\u003cp class=\"hcore9pkg-big\"\u003e9 kW\u003c\/p\u003e\n\u003cp\u003eHUUM's rating on a 240 volt supply. On 208 volts the same heater makes 6.75 kW.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hcore9pkg-lbl\"\u003eRoom it is rated for\u003c\/p\u003e\n\u003cp class=\"hcore9pkg-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=\"hcore9pkg-lbl\"\u003eStone included\u003c\/p\u003e\n\u003cp class=\"hcore9pkg-big\"\u003e3 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=\"hcore9pkg-tinted\" id=\"fit\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eSizing\u003c\/p\u003e\n\u003ch2\u003eWhich CORE package suits your room\u003c\/h2\u003e\n\u003cp class=\"hcore9pkg-lead\"\u003eEvery package in this series carries the same seven control choices and the same\ngrade of stone. What separates them is output and the room each one is rated for. The stone load is the same across the series, so a bigger package is more heat rather than more mass. There are 3 of them.\u003c\/p\u003e\n\u003cdiv class=\"hcore9pkg-tw\"\u003e\u003ctable class=\"hcore9pkg-ladder hcore9pkg-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=\"hcore9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-core-6-sauna-heater-package\"\u003eCORE 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hcore9pkg-on\"\u003e\n\u003ctd class=\"hcore9pkg-kw\"\u003eCORE 9 \u003cspan class=\"hcore9pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hcore9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-core-11-sauna-heater-package\"\u003eCORE 11\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e3 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 id=\"heater\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eThe heater\u003c\/p\u003e\n\u003ch2\u003eWhat the CORE 9 is rated for\u003c\/h2\u003e\n\u003cp class=\"hcore9pkg-lead\"\u003eHUUM rates the \u003ca href=\"\/products\/huum-core-9-electric-sauna-heater\"\u003eCORE 9 heater\u003c\/a\u003e for 283 to 460 cubic feet at 240 volts. It stands on the floor, and it measures 15.16 in wide, 15.16 in deep and 32.7 in tall. HUUM gives its stone capacity as 88.2 lb (40 kg), and \u003ca href=\"\/products\/huum-sauna-stones-5-10-cm\"\u003eits olivine diabase stone\u003c\/a\u003e comes in 33 pound boxes, so this package carries 3 of them.\u003c\/p\u003e\n\u003cp\u003eThe CORE is the only HUUM heater you finish yourself: black, one of three wood panel sets, or bare shields you clad in tile, stone, glass or timber. Underneath the case every CORE is the same heater.\u003c\/p\u003e\n\u003cp\u003eOn a 208 volt supply the same heater makes 6.75 kW and is rated for 212 to 354 cubic feet.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hcore9pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black_d5956cba-c849-44d2-8a9f-928a92ed9274_5aec9809-34e3-4689-936a-1c6ef6988a76.jpg?width=1200\" alt=\"HUUM CORE 9 sauna heater\" width=\"1084\" height=\"1084\" 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=\"hcore9pkg-tinted\" id=\"exterior\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eThe case\u003c\/p\u003e\n\u003ch2\u003eNine ways to finish the CORE 9\u003c\/h2\u003e\n\u003cp\u003eThe CORE is the only HUUM heater you case yourself. Pick the exterior at the top of this page and the price moves with it: black is HUUM's finished steel case, the wood options are 4 panels that fasten over the metal shields, and unfinished is 4 bare shields with cover strips, ready for the tile, stone, glass or timber you fit. The manual's finishing appendix sets out what the heater will take.\u003c\/p\u003e\n\u003cp\u003eThe top trim is the cover strip along the top rim, in black or stainless, and it costs the same either way. Black is the one exterior that comes with a black trim only. Whatever you choose, the heater underneath is the same, and so is the stone it holds and the circuit it needs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"control\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eThe control\u003c\/p\u003e\n\u003ch2\u003eWhich UKU comes in the package\u003c\/h2\u003e\n\u003cp class=\"hcore9pkg-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=\"hcore9pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-uku-black_487056ae-d42a-4409-b723-b7ed286c1869_f51e1067-1dfc-48b7-98ac-171d1274ae97.jpg?width=1200\" alt=\"HUUM UKU control, included in the package\" width=\"669\" height=\"770\" 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=\"hcore9pkg-tinted\" id=\"electrical\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eThe circuit\u003c\/p\u003e\n\u003ch2\u003e37.5 amps at 240 volts\u003c\/h2\u003e\n\u003cp class=\"hcore9pkg-lead\"\u003eThe CORE 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=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eStone\u003c\/p\u003e\n\u003ch2\u003eThe stone is already in the order\u003c\/h2\u003e\n\u003cp class=\"hcore9pkg-lead\"\u003eHUUM gives the CORE 9 a stone capacity of about 88.2 lb (40 kg). Its\n\u003ca href=\"\/products\/huum-sauna-stones-5-10-cm\"\u003eolivine diabase\u003c\/a\u003e is sold in 33 pound boxes, so this package carries 3 of\nthem, which covers it with a little left over.\u003c\/p\u003e\n\u003ch3\u003eWhy the grade is on the label\u003c\/h3\u003e\n\u003cp\u003eThis heater takes stone 2 to 4 inches (5 to 10 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=\"hcore9pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-sauna-stones-olivine_eb67c44f-f019-4c4b-9a62-2a1de5182677_b56e729d-6b20-4b55-acff-9041de12f58d.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=\"hcore9pkg-tinted\" id=\"specs\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eSpecifications\u003c\/p\u003e\n\u003ch2\u003eWhat is in this package\u003c\/h2\u003e\n\u003cdiv class=\"hcore9pkg-tw\"\u003e\u003ctable class=\"hcore9pkg-spec\"\u003e\n\u003ccaption\u003eHUUM CORE 9 package reference\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater\u003c\/th\u003e\n\u003ctd\u003eHUUM CORE 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\u003e6.75 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\u003e15.16 x 15.16 x 32.7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e41.9 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\u003e43.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone in the package\u003c\/th\u003e\n\u003ctd\u003e3 boxes, 88.2 lb (40 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\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=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eThe alternatives\u003c\/p\u003e\n\u003ch2\u003eOther HUUM packages that cover a similar room\u003c\/h2\u003e\n\u003cp class=\"hcore9pkg-lead\"\u003eA room of this size does not tie you to one heater. These HUUM packages have a rated range that overlaps the CORE 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=\"hcore9pkg-tw\"\u003e\u003ctable class=\"hcore9pkg-ladder hcore9pkg-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=\"hcore9pkg-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=\"hcore9pkg-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=\"hcore9pkg-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=\"hcore9pkg-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=\"hcore9pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-9-sauna-heater-package\"\u003eSTEEL 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 class=\"hcore9pkg-on\"\u003e\n\u003ctd class=\"hcore9pkg-kw\"\u003eCORE 9 \u003cspan class=\"hcore9pkg-tag\"\u003eThis package\u003c\/span\u003e\n\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\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=\"hcore9pkg-tinted\" id=\"crate\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n\u003ch2\u003eWhat arrives, and in how many boxes\u003c\/h2\u003e\n\u003cp class=\"hcore9pkg-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=\"hcore9pkg-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\u003e3 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=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eDelivery\u003c\/p\u003e\n\u003ch2\u003eHow the package arrives\u003c\/h2\u003e\n\u003cp class=\"hcore9pkg-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, 3 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=\"hcore9pkg-tinted\" id=\"faq\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\"\u003eQuestions\u003c\/p\u003e\n\u003ch2\u003eQuestions buyers ask about this package\u003c\/h2\u003e\n\u003cdiv class=\"hcore9pkg-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is in the HUUM CORE 9 package?\u003c\/summary\u003e\u003cdiv class=\"hcore9pkg-fb\"\u003e\u003cp\u003eThe CORE 9 heater, a HUUM UKU control in the panel finish you pick, and 3 boxes of HUUM olivine diabase stone, 88.2 lb (40 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=\"hcore9pkg-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 CORE 9 heat?\u003c\/summary\u003e\u003cdiv class=\"hcore9pkg-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=\"hcore9pkg-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 CORE 9 need?\u003c\/summary\u003e\u003cdiv class=\"hcore9pkg-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=\"hcore9pkg-fb\"\u003e\u003cp\u003eYes. HUUM gives the stone capacity as 88.2 lb (40 kg), and stone comes in 33 pound boxes, so the package carries 3. 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=\"hcore9pkg-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 CORE 9 listed for use in the United States?\u003c\/summary\u003e\u003cdiv class=\"hcore9pkg-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 CORE 9 for the United States and Canada under certificate SGSNA\/25\/SUW\/00121X, 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 powered and controlled by a certified controller and the wiring to that controller follows the National Electrical Code. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the SGS directory record for it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the package?\u003c\/summary\u003e\u003cdiv class=\"hcore9pkg-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 service parts, 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=\"hcore9pkg-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=\"hcore9pkg-close\" id=\"order\"\u003e\n\u003cdiv class=\"hcore9pkg-c\"\u003e\n\u003cp class=\"hcore9pkg-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the CORE 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=\"hcore9pkg-who\"\u003e\n\u003cimg class=\"hcore9pkg-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=\"hcore9pkg-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hcore9pkg-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":"Black \/ UKU Local, black","offer_id":53521210802543,"sku":"HUUM-PKG-CORE9-BK-LB","price":3497.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Local, thermo-ash wood","offer_id":53521210835311,"sku":"HUUM-PKG-CORE9-BK-LW","price":3810.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, black","offer_id":53521210868079,"sku":"HUUM-PKG-CORE9-BK-WB","price":3759.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, thermo-ash wood","offer_id":53521210900847,"sku":"HUUM-PKG-CORE9-BK-WW","price":4072.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, black glass","offer_id":53521210933615,"sku":"HUUM-PKG-CORE9-BK-WG","price":4159.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, mirror","offer_id":53521210966383,"sku":"HUUM-PKG-CORE9-BK-WMR","price":4422.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, gold","offer_id":53521210999151,"sku":"HUUM-PKG-CORE9-BK-WGD","price":4422.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim \/ UKU Local, black","offer_id":53521211031919,"sku":"HUUM-PKG-CORE9-ALB-LB","price":4242.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim \/ UKU Local, thermo-ash wood","offer_id":53521211064687,"sku":"HUUM-PKG-CORE9-ALB-LW","price":4555.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim \/ UKU Wi-Fi, black","offer_id":53521211097455,"sku":"HUUM-PKG-CORE9-ALB-WB","price":4504.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim \/ UKU Wi-Fi, thermo-ash wood","offer_id":53521211130223,"sku":"HUUM-PKG-CORE9-ALB-WW","price":4817.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim \/ UKU Wi-Fi, black glass","offer_id":53521211162991,"sku":"HUUM-PKG-CORE9-ALB-WG","price":4904.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim \/ UKU Wi-Fi, mirror","offer_id":53521211195759,"sku":"HUUM-PKG-CORE9-ALB-WMR","price":5167.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, black trim \/ UKU Wi-Fi, gold","offer_id":53521211228527,"sku":"HUUM-PKG-CORE9-ALB-WGD","price":5167.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, stainless trim \/ UKU Local, black","offer_id":53521211261295,"sku":"HUUM-PKG-CORE9-ALS-LB","price":4242.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, stainless trim \/ UKU Local, thermo-ash wood","offer_id":53521211294063,"sku":"HUUM-PKG-CORE9-ALS-LW","price":4555.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, stainless trim \/ UKU Wi-Fi, black","offer_id":53521211326831,"sku":"HUUM-PKG-CORE9-ALS-WB","price":4504.0,"currency_code":"USD","in_stock":true},{"title":"Alder wood, stainless trim \/ 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p.hcore11pkg-eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.5}.hcore11pkg .hcore11pkg-stat3 a{color:var(--bright)}.hcore11pkg .hcore11pkg-faq summary h3{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit;display:inline}.hcore11pkg .hcore11pkg-cmp thead a .hcore11pkg-cmp-here{color:var(--sub);font-weight:600;letter-spacing:.02em;text-transform:none}@media screen and (max-width:560px){.hcore11pkg .hcore11pkg-ladder.hcore11pkg-rooms td:last-child::before{content:\"Rated room:\\00a0\"}.hcore11pkg .hcore11pkg-ladder.hcore11pkg-out td:last-child::before{content:\"Output:\\00a0\"}}.hcore11pkg .hcore11pkg-tw + p,.hcore11pkg .hcore11pkg-tw + h3,.hcore11pkg .hcore11pkg-warn + p,.hcore11pkg .hcore11pkg-warn + h3,.hcore11pkg .hcore11pkg-more + p{margin-top:24px}.hcore11pkg .hcore11pkg-vid iframe{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark)}\u003c\/style\u003e\n\u003cdiv class=\"hcore11pkg\"\u003e\n\u003csection id=\"overview\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n\u003cdetails class=\"hcore11pkg-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hcore11pkg-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=\"#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=\"#exterior\"\u003eThe case\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 CORE 11 Sauna Heater Package\u003c\/h2\u003e\n\u003cp class=\"hcore11pkg-lead\"\u003eA HUUM heater carton holds the heater and its fixings. No control, no stone. This package is the CORE 11 with a UKU control and the 3 boxes of stone HUUM's manual asks for, so nothing is missing when the electrician arrives.\u003c\/p\u003e\n\u003cul class=\"hcore11pkg-chk\"\u003e\n\u003cli\u003eThe HUUM CORE 11 sauna heater, 10.5 kW\u003c\/li\u003e\n\u003cli\u003eA HUUM UKU control, in the panel finish you pick above\u003c\/li\u003e\n\u003cli\u003e3 boxes of HUUM olivine diabase stone, 88.2 lb (40 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=\"hcore11pkg-stat3\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hcore11pkg-lbl\"\u003eOutput at 240 volts\u003c\/p\u003e\n\u003cp class=\"hcore11pkg-big\"\u003e10.5 kW\u003c\/p\u003e\n\u003cp\u003eHUUM's rating on a 240 volt supply. On 208 volts the same heater makes 7.9 kW.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"hcore11pkg-lbl\"\u003eRoom it is rated for\u003c\/p\u003e\n\u003cp class=\"hcore11pkg-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=\"hcore11pkg-lbl\"\u003eStone included\u003c\/p\u003e\n\u003cp class=\"hcore11pkg-big\"\u003e3 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=\"hcore11pkg-tinted\" id=\"fit\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eSizing\u003c\/p\u003e\n\u003ch2\u003eWhich CORE package suits your room\u003c\/h2\u003e\n\u003cp class=\"hcore11pkg-lead\"\u003eEvery package in this series carries the same seven control choices and the same\ngrade of stone. What separates them is output and the room each one is rated for. The stone load is the same across the series, so a bigger package is more heat rather than more mass. There are 3 of them.\u003c\/p\u003e\n\u003cdiv class=\"hcore11pkg-tw\"\u003e\u003ctable class=\"hcore11pkg-ladder hcore11pkg-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=\"hcore11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-core-6-sauna-heater-package\"\u003eCORE 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hcore11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-core-9-sauna-heater-package\"\u003eCORE 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e3 boxes\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hcore11pkg-on\"\u003e\n\u003ctd class=\"hcore11pkg-kw\"\u003eCORE 11 \u003cspan class=\"hcore11pkg-tag\"\u003eThis package\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e3 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 id=\"heater\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eThe heater\u003c\/p\u003e\n\u003ch2\u003eWhat the CORE 11 is rated for\u003c\/h2\u003e\n\u003cp class=\"hcore11pkg-lead\"\u003eHUUM rates the \u003ca href=\"\/products\/huum-core-11-electric-sauna-heater\"\u003eCORE 11 heater\u003c\/a\u003e for 354 to 566 cubic feet at 240 volts. It stands on the floor, and it measures 15.16 in wide, 15.16 in deep and 32.7 in tall. HUUM gives its stone capacity as 88.2 lb (40 kg), and \u003ca href=\"\/products\/huum-sauna-stones-5-10-cm\"\u003eits olivine diabase stone\u003c\/a\u003e comes in 33 pound boxes, so this package carries 3 of them.\u003c\/p\u003e\n\u003cp\u003eThe CORE is the only HUUM heater you finish yourself: black, one of three wood panel sets, or bare shields you clad in tile, stone, glass or timber. Underneath the case every CORE is the same heater.\u003c\/p\u003e\n\u003cp\u003eOn a 208 volt supply the same heater makes 7.9 kW and is rated for 265 to 424 cubic feet.\u003c\/p\u003e\n\u003cfigure\u003e\u003cdiv class=\"hcore11pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-core-black_d799308c-ffe8-40d9-984b-79269c986b10_be8a388c-39da-4cdf-983e-d4c574c4e1aa.jpg?width=1200\" alt=\"HUUM CORE 11 sauna heater\" width=\"1084\" height=\"1084\" 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=\"hcore11pkg-tinted\" id=\"exterior\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eThe case\u003c\/p\u003e\n\u003ch2\u003eNine ways to finish the CORE 11\u003c\/h2\u003e\n\u003cp\u003eThe CORE is the only HUUM heater you case yourself. Pick the exterior at the top of this page and the price moves with it: black is HUUM's finished steel case, the wood options are 4 panels that fasten over the metal shields, and unfinished is 4 bare shields with cover strips, ready for the tile, stone, glass or timber you fit. The manual's finishing appendix sets out what the heater will take.\u003c\/p\u003e\n\u003cp\u003eThe top trim is the cover strip along the top rim, in black or stainless, and it costs the same either way. Black is the one exterior that comes with a black trim only. Whatever you choose, the heater underneath is the same, and so is the stone it holds and the circuit it needs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"control\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eThe control\u003c\/p\u003e\n\u003ch2\u003eWhich UKU comes in the package\u003c\/h2\u003e\n\u003cp class=\"hcore11pkg-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=\"hcore11pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-uku-black_487056ae-d42a-4409-b723-b7ed286c1869_02bca1b4-6210-46e5-b5ef-1b580a1e6350.jpg?width=1200\" alt=\"HUUM UKU control, included in the package\" width=\"669\" height=\"770\" 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=\"hcore11pkg-tinted\" id=\"electrical\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eThe circuit\u003c\/p\u003e\n\u003ch2\u003e43.75 amps at 240 volts\u003c\/h2\u003e\n\u003cp class=\"hcore11pkg-lead\"\u003eThe CORE 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=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eStone\u003c\/p\u003e\n\u003ch2\u003eThe stone is already in the order\u003c\/h2\u003e\n\u003cp class=\"hcore11pkg-lead\"\u003eHUUM gives the CORE 11 a stone capacity of about 88.2 lb (40 kg). Its\n\u003ca href=\"\/products\/huum-sauna-stones-5-10-cm\"\u003eolivine diabase\u003c\/a\u003e is sold in 33 pound boxes, so this package carries 3 of\nthem, which covers it with a little left over.\u003c\/p\u003e\n\u003ch3\u003eWhy the grade is on the label\u003c\/h3\u003e\n\u003cp\u003eThis heater takes stone 2 to 4 inches (5 to 10 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=\"hcore11pkg-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-sauna-stones-olivine_eb67c44f-f019-4c4b-9a62-2a1de5182677_0d766f9d-98fa-458c-8be6-d4d0cc699a49.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=\"hcore11pkg-tinted\" id=\"specs\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eSpecifications\u003c\/p\u003e\n\u003ch2\u003eWhat is in this package\u003c\/h2\u003e\n\u003cdiv class=\"hcore11pkg-tw\"\u003e\u003ctable class=\"hcore11pkg-spec\"\u003e\n\u003ccaption\u003eHUUM CORE 11 package reference\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater\u003c\/th\u003e\n\u003ctd\u003eHUUM CORE 11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput at 240 V\u003c\/th\u003e\n\u003ctd\u003e10.5 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\u003e7.9 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\u003e15.16 x 15.16 x 32.7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e41.9 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\u003e43.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone in the package\u003c\/th\u003e\n\u003ctd\u003e3 boxes, 88.2 lb (40 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\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=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eThe alternatives\u003c\/p\u003e\n\u003ch2\u003eOther HUUM packages that cover a similar room\u003c\/h2\u003e\n\u003cp class=\"hcore11pkg-lead\"\u003eA room of this size does not tie you to one heater. These HUUM packages have a rated range that overlaps the CORE 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=\"hcore11pkg-tw\"\u003e\u003ctable class=\"hcore11pkg-ladder hcore11pkg-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=\"hcore11pkg-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 class=\"hcore11pkg-on\"\u003e\n\u003ctd class=\"hcore11pkg-kw\"\u003eCORE 11 \u003cspan class=\"hcore11pkg-tag\"\u003eThis package\u003c\/span\u003e\n\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=\"hcore11pkg-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=\"hcore11pkg-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\u003e\n\u003ctd class=\"hcore11pkg-kw\"\u003e\u003ca href=\"\/products\/huum-steel-11-sauna-heater-package\"\u003eSTEEL 11\u003c\/a\u003e\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=\"hcore11pkg-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=\"hcore11pkg-tinted\" id=\"crate\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n\u003ch2\u003eWhat arrives, and in how many boxes\u003c\/h2\u003e\n\u003cp class=\"hcore11pkg-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=\"hcore11pkg-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\u003e3 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=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eDelivery\u003c\/p\u003e\n\u003ch2\u003eHow the package arrives\u003c\/h2\u003e\n\u003cp class=\"hcore11pkg-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, 3 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=\"hcore11pkg-tinted\" id=\"faq\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\"\u003eQuestions\u003c\/p\u003e\n\u003ch2\u003eQuestions buyers ask about this package\u003c\/h2\u003e\n\u003cdiv class=\"hcore11pkg-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is in the HUUM CORE 11 package?\u003c\/summary\u003e\u003cdiv class=\"hcore11pkg-fb\"\u003e\u003cp\u003eThe CORE 11 heater, a HUUM UKU control in the panel finish you pick, and 3 boxes of HUUM olivine diabase stone, 88.2 lb (40 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=\"hcore11pkg-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 CORE 11 heat?\u003c\/summary\u003e\u003cdiv class=\"hcore11pkg-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=\"hcore11pkg-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 CORE 11 need?\u003c\/summary\u003e\u003cdiv class=\"hcore11pkg-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=\"hcore11pkg-fb\"\u003e\u003cp\u003eYes. HUUM gives the stone capacity as 88.2 lb (40 kg), and stone comes in 33 pound boxes, so the package carries 3. 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=\"hcore11pkg-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 CORE 11 listed for use in the United States?\u003c\/summary\u003e\u003cdiv class=\"hcore11pkg-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 CORE 11 for the United States and Canada under certificate SGSNA\/25\/SUW\/00121X, 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 powered and controlled by a certified controller and the wiring to that controller follows the National Electrical Code. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the SGS directory record for it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the package?\u003c\/summary\u003e\u003cdiv class=\"hcore11pkg-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 service parts, 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=\"hcore11pkg-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=\"hcore11pkg-close\" id=\"order\"\u003e\n\u003cdiv class=\"hcore11pkg-c\"\u003e\n\u003cp class=\"hcore11pkg-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n\u003ch2\u003eNot sure the CORE 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=\"hcore11pkg-who\"\u003e\n\u003cimg class=\"hcore11pkg-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=\"hcore11pkg-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n\u003ca class=\"hcore11pkg-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":"Black \/ UKU Local, black","offer_id":53521212965231,"sku":"HUUM-PKG-CORE11-BK-LB","price":3645.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Local, thermo-ash wood","offer_id":53521212997999,"sku":"HUUM-PKG-CORE11-BK-LW","price":3958.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, black","offer_id":53521213030767,"sku":"HUUM-PKG-CORE11-BK-WB","price":3907.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, thermo-ash wood","offer_id":53521213063535,"sku":"HUUM-PKG-CORE11-BK-WW","price":4220.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, black glass","offer_id":53521213096303,"sku":"HUUM-PKG-CORE11-BK-WG","price":4307.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UKU Wi-Fi, 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