{"product_id":"huum-cliff-11-electric-sauna-heater","title":"HUUM CLIFF 11 11kW Electric Sauna Heater","description":"\u003cstyle\u003e.hcliff11{--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}.hcliff11 *{box-sizing:border-box}.hcliff11 .hcliff11-c img{margin:0 !important;border:0}.hcliff11 .hcliff11-c{max-width:1000px;margin:0 auto;padding:0 20px}.hcliff11 section{padding:52px 0}.hcliff11 section:first-of-type{padding-top:26px}.hcliff11 section.hcliff11-tinted{background:var(--tint)}.hcliff11 section + section.hcliff11-tinted,.hcliff11 section.hcliff11-tinted + section{border-top:1px 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p{margin-top:24px}\u003c\/style\u003e\n\u003cdiv class=\"hcliff11\"\u003e\n\u003csection id=\"overview\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cdetails class=\"hcliff11-disc\"\u003e\u003csummary\u003eJump to\u003cspan class=\"hcliff11-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=\"hcliff11-eyebrow\"\u003eThe largest CLIFF\u003c\/p\u003e\n    \u003ch2\u003eThe HUUM CLIFF 11 is a 11 kW floor standing electric sauna heater for rooms of 354 to 566 cubic feet\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-lead\"\u003eEleven kilowatts for rooms of 354 to 566 cubic feet, the top of the CLIFF range, from the same slim column as the rest of the family.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-stat3\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hcliff11-lbl\"\u003eThe room\u003c\/p\u003e\n        \u003cp class=\"hcliff11-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=\"hcliff11-lbl\"\u003eRated current\u003c\/p\u003e\n        \u003cp class=\"hcliff11-big\"\u003e43.75 A at 240 V\u003c\/p\u003e\n        \u003cp\u003eHUUM's manual calls for a 50 A breaker and 8 AWG cable. Worth confirming your panel can carry it. It is hardwired by a licensed electrician, who sizes the circuit to the National Electrical Code. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"hcliff11-lbl\"\u003eThe rest of the order\u003c\/p\u003e\n        \u003cp class=\"hcliff11-big\"\u003eControl and 5 boxes of stone\u003c\/p\u003e\n        \u003cp\u003eNeither is in the carton. A \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU control\u003c\/a\u003e runs the heater from outside the room, and this heater holds about 165 lb (75 kg) of \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003esauna stone\u003c\/a\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hcliff11-tinted\" id=\"fit\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eSizing\u003c\/p\u003e\n    \u003ch2\u003eWill the HUUM CLIFF 11 heat your sauna?\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-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 CLIFF 11 for \u003cstrong\u003e354 to 566 cubic feet\u003c\/strong\u003e on a 240 volt supply, and its manual warns that the warranty does not apply if the heater and room are dimensioned incorrectly.\u003c\/p\u003e\n    \u003cp\u003eCold surfaces change the answer. HUUM's manual says to add \u003cstrong\u003e3.3 cubic feet of volume for every square foot\u003c\/strong\u003e of uninsulated brick, tile or glass wall in the room. It does not say whether a glass door counts, so counting it is the cautious choice.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-tw\"\u003e\u003ctable class=\"hcliff11-ladder hcliff11-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=\"hcliff11-kw\"\u003eCLIFF Mini 4\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft. at 240 V, 106 to 159 at 208 V\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hcliff11-kw\"\u003eCLIFF 6\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft. at 240 V, 142 to 248 at 208 V\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"hcliff11-kw\"\u003eCLIFF 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=\"hcliff11-on\"\u003e\n\u003ctd class=\"hcliff11-kw\"\u003eCLIFF 11 \u003cspan class=\"hcliff11-tag\"\u003eThis heater\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft. at 240 V, 265 to 424 at 208 V\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA worked example for the CLIFF 11\u003c\/h3\u003e\n    \u003cp\u003eTake a room 9 feet by 8 feet with a 7.5 foot ceiling: 72 square feet of floor and 540 cubic feet, inside this heater's 354 to 566. Count a full glass door, take 13 square feet as an example and measure your own, and at 3.3 cubic feet a square foot the room behaves like about 583 cubic feet, which is past the top of the CLIFF 11's range.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's CLIFF manual gives a minimum sauna room height of 86.6 inches (2200 mm)\u003c\/b\u003e, with a regular height of 86.6 to 91 inches, and advises bringing a taller ceiling down into that range to reduce the volume.\u003c\/p\u003e\u003c\/div\u003e\n    \u003cp\u003eNot sure which way a borderline room goes? Our \u003ca href=\"\/pages\/find-your-sauna-heater\"\u003esauna heater finder\u003c\/a\u003e walks the same arithmetic, the \u003ca href=\"\/pages\/sauna-heater-buyers-guide\"\u003esauna heater buyers guide\u003c\/a\u003e explains what the numbers mean, or call and we will do it with you.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"design\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eWhat makes it a CLIFF\u003c\/p\u003e\n    \u003ch2\u003eWhy the CLIFF 11 looks like a column of stone\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-lead\"\u003eThe CLIFF puts its stone on the outside. The heating elements run inside and the outer face of the heater is the stone itself.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-block\"\u003e\n        \u003ch3\u003eThe stone is the surface\u003c\/h3\u003e\n\u003cp\u003eHUUM describes the CLIFF as having a natural stone surface that reflects the Nordic cliffs it is named for. The stone sits behind removable steel ribs, and the carton includes 2 blocks for taking the ribs off to lay it. HUUM says the CLIFF won a Red Dot Design Award in 2021.\u003c\/p\u003e\n\u003ch3\u003eSlim, and on the floor\u003c\/h3\u003e\n\u003cp\u003eThe heater is 10.6 in W x 10.6 in D x 38.4 in H. The 6, 9 and 11 stand on the floor and are anchored to it with brackets, fixed with a suitable screw, preferably at least 6 x 40 mm, according to HUUM's manual.\u003c\/p\u003e\n\u003ch3\u003eIt can be sunk into the bench\u003c\/h3\u003e\n\u003cp\u003eHUUM says the CLIFF can be embedded into the sauna bench, with at least 21.7 inches (550 mm) of the heater above the bench surface. The \u003ca href=\"\/products\/huum-cliff-steel-embedding-flange\"\u003eCLIFF and STEEL embedding flange\u003c\/a\u003e covers the cut edge.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cfigure\u003e\u003cdiv class=\"hcliff11-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-cliff-11-studio.jpg?v=1790068908\u0026amp;width=1200\" alt=\"HUUM CLIFF floor standing electric sauna heater filled with stones\" width=\"2048\" height=\"2048\" loading=\"eager\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eThe HUUM CLIFF 11.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003ch3\u003eThe CLIFF 11 needs room around it\u003c\/h3\u003e\n    \u003cp\u003eHUUM's manual asks for 15 inches between this heater and the wall beside it, and 40.5 inches wall to wall across it. The room has to be planned around that.\u003c\/p\u003e\n\u003cp\u003eIf that space is not there, two HUUM answers exist. The CLIFF reflector halves the safety distance from flammable material, according to HUUM's reflector instructions. Or the STEEL 11 gives the same 11 kW and the same room range at 3.94 inches to the side wall, with twice the stone. On 208 volts this heater makes 8.5 kW and is rated for 265 to 424 cubic feet.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hcliff11-tinted\" id=\"parts\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eThe whole order\u003c\/p\u003e\n    \u003ch2\u003eWhat a working CLIFF 11 takes, beyond the heater\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-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=\"hcliff11-tw\"\u003e\u003ctable class=\"hcliff11-spec\"\u003e\n      \u003ccaption\u003eRequired to operate\u003c\/caption\u003e\n      \u003ctr class=\"hcliff11-hl\"\u003e\n\u003cth\u003eThe heater\u003c\/th\u003e\n\u003ctd\u003eThis page.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eA certified control\u003c\/th\u003e\n\u003ctd\u003eThe control unit goes outside the hot room. HUUM's matched control is the UKU, and it is the controller the heater was certified with: the \u003ca href=\"\/products\/huum-uku-local-sauna-heater-control\"\u003eHUUM UKU Local control\u003c\/a\u003e or the \u003ca href=\"\/products\/huum-uku-wifi-sauna-heater-control\"\u003eHUUM UKU Wi-Fi control\u003c\/a\u003e.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \n      \u003ctr\u003e\n\u003cth\u003e5 boxes of stone\u003c\/th\u003e\n\u003ctd\u003eAbout 165 lb (75 kg), 1.2 to 1.9 inches (3 to 5 cm). \u003ca href=\"\/products\/huum-sauna-stones-3-5-cm\"\u003eHUUM olivine diabase sauna stones\u003c\/a\u003e come in 33 pound boxes.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eA guard is a code item, not an upsell\u003c\/h3\u003e\n    \u003cp\u003eThe International Residential Code asks for sauna heaters to be protected from accidental contact by a guard made of a material with low thermal conductivity, such as wood, without blocking the heat. You can build one or use the \u003ca href=\"\/products\/huum-cliff-safety-rail\"\u003eCLIFF safety rail\u003c\/a\u003e HUUM makes for this heater. HUUM adds that when the guard is a flammable material such as wood, the heater's minimum safety distances still have to be kept to it. Check what your local code has adopted.\u003c\/p\u003e\n    \u003ch3\u003eOptional\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/huum-cliff-reflector\"\u003ereflector panel\u003c\/a\u003e is the part HUUM makes for a tight space: HUUM states it halves the heater's safety distance to the walls, and the heater manual's own distances still decide the layout until your inspector agrees. The \u003ca href=\"\/products\/huum-cliff-steel-embedding-flange\"\u003eembedding flange\u003c\/a\u003e is only needed if the heater is sunk into a bench.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-warn\"\u003e\u003cp\u003eBuying the heater, the control and the stone together settles the order in one go: our \u003ca href=\"\/products\/huum-cliff-11-sauna-heater-package\"\u003eHUUM CLIFF 11 sauna heater package\u003c\/a\u003e is exactly that, priced at the parts added together. Or call and we will price the heater, control and stone together.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"electrical\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eElectrical\u003c\/p\u003e\n    \u003ch2\u003eThe breaker and wire size the HUUM CLIFF 11 needs\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-lead\"\u003eSettle this before you buy, because it is the line item that surprises people. The heater is hardwired by a licensed electrician.\u003c\/p\u003e\n    \u003cp\u003eThe figures below are HUUM's, from its US manual. They are the manufacturer's minimum, not a design for your house: sauna heating is a continuous load, so the National Electrical Code can require a larger breaker and heavier conductors than the manual's figure, and local amendments differ. Your electrician sizes the circuit. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\n    \n    \u003cdiv class=\"hcliff11-tw\"\u003e\u003ctable class=\"hcliff11-ladder hcliff11-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=\"hcliff11-on\"\u003e\n\u003ctd class=\"hcliff11-kw\"\u003e240 V\u003cspan class=\"hcliff11-tag\"\u003eMost homes\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e11 kW, 43.75 A, 50 A breaker, 8 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd class=\"hcliff11-kw\"\u003e208 V\u003c\/td\u003e\n\u003ctd\u003e8.5 kW, 37.98 A, 50 A breaker, 8 AWG minimum cable\u003c\/td\u003e\n\u003ctd\u003e265 to 424 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhat the manual requires\u003c\/h3\u003e\n    \u003cp\u003eThe supply cable has to meet UL 62 in the United States or CSA 49 in Canada, and a means of disconnecting all poles, a circuit breaker, goes on the power circuit before the control. Cable with non heat resistant PVC insulation is not allowed, and the junction box must be waterproof and within 20 inches (50 cm) of the floor. HUUM's CLIFF manual says any certified control panel may be used, and that the heater may be used only with a control unit that has a timer function.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-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\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 CLIFF 11 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hcliff11-tinted\" id=\"install\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eClearances\u003c\/p\u003e\n    \u003ch2\u003eWhere the HUUM CLIFF 11 can go\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-lead\"\u003eClearances are set per model and generally grow with output. These are this model's figures from HUUM's manual.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-tw\"\u003e\u003ctable class=\"hcliff11-spec\"\u003e\n      \u003ccaption\u003eMinimum distances, CLIFF 11\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eTo the wall beside the heater\u003c\/th\u003e\n\u003ctd\u003e15.0 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e40.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAbove the heater, to the ceiling\u003c\/th\u003e\n\u003ctd\u003e47.3 in (1200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e10.6 in W x 10.6 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e37.5 lb without stone\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eHUUM's manual has the 6, 9 and 11 anchored to the floor with brackets on the heater legs, fixed with a suitable screw, preferably at least 6 x 40 mm. SGS lists the CLIFF and STEEL on the condition that they are anchored.\u003c\/p\u003e\n    \u003cp\u003eThe room itself has to be built for a sauna, with an insulated shell, a reflective vapor barrier and supply and exhaust vents. Our \u003ca href=\"\/collections\/traditional-saunas\"\u003etraditional sauna rooms\u003c\/a\u003e arrive built that way.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"stones\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eStone\u003c\/p\u003e\n    \u003ch2\u003eHow much stone the CLIFF 11 takes, and how to lay it\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-lead\"\u003eThe stone is not a finishing touch. It is the thermal mass that turns 11 kW into steam, and the heater may not be switched on without it.\u003c\/p\u003e\n    \u003cp\u003eThis heater holds \u003cstrong\u003eabout 165 lb (75 kg)\u003c\/strong\u003e, which is \u003cstrong\u003e5 boxes\u003c\/strong\u003e of HUUM stone. HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across and supplies olivine diabase in 33 pound boxes.\u003c\/p\u003e\n    \u003ch3\u003eLaying it\u003c\/h3\u003e\n    \u003cp\u003eWash the stone first. Stack it loosely between the elements: HUUM's manual warns that stone packed too close makes the elements overheat, which shortens their life and slows the heating. The stone on the outer face goes close together, so no element is visible. On the CLIFF the ribs come off for the job, using the 2 blocks in the carton, and go back on left end first. HUUM recommends having a specialist lay the stone, and allows ceramic stones only at the user's own responsibility.\u003c\/p\u003e\n\u003cdiv class=\"hcliff11-warn\"\u003e\u003cp\u003e\u003cb\u003eHUUM's manual requires the stone to hide the elements completely, and warns that a sparsely filled stone container is a fire hazard.\u003c\/b\u003e\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"video\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eWatch\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-vidrow\"\u003e\n    \u003cdiv class=\"hcliff11-vid\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/_XxhQ8VFWJk\" title=\"Building it into the bench, HUUM\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n    \u003cdiv class=\"hcliff11-vidbody\"\u003e\n    \u003ch2\u003eBuilding it into the bench\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-lead\"\u003eThe optional embedding flange, from bench cut-out to finished edge.\u003c\/p\u003e\n    \u003cp\u003eHUUM filmed this itself. Its heater installation films are made for Europe and show European wiring, so we do not run them here: the sauna side of the job is the same, the electrical side is not.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003c\/section\u003e\n\n\u003csection class=\"hcliff11-tinted\" id=\"costs\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eRunning cost\u003c\/p\u003e\n    \u003ch2\u003eWhat the CLIFF 11 costs to run\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-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=\"hcliff11-tw\"\u003e\u003ctable class=\"hcliff11-spec\"\u003e\n      \u003ccaption\u003eAt the US average residential price of 18.3 cents a kilowatt hour (EIA, June 2026)\u003c\/caption\u003e\n      \u003ctr\u003e\n\u003cth\u003eFull output, one hour\u003c\/th\u003e\n\u003ctd\u003e11 kW x 0.183 = about 2.01 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree hours at full draw, heat up and a session\u003c\/th\u003e\n\u003ctd\u003eabout 6.04 dollars\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThree of those a week\u003c\/th\u003e\n\u003ctd\u003eabout 18 dollars a week\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eThose are ceilings, not averages: once the room is at temperature the thermostat cycles the elements, so the real bill lands under these ceilings. Your own rate is on your utility bill and varies widely by state.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-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=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n    \u003ch2\u003eIn the CLIFF 11 carton\u003c\/h2\u003e\n    \u003cdiv class=\"hcliff11-pairup\"\u003e\n      \u003cdiv\u003e\n        \u003cul class=\"hcliff11-chk\"\u003e\n\u003cli\u003eElectric heater\u003c\/li\u003e\n\u003cli\u003e2 blocks for removing the stone ribs\u003c\/li\u003e\n\u003cli\u003eInstallation and operation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003ch3\u003eNot included\u003c\/h3\u003e\n        \u003cp\u003eThe control, the stone, and the electrical work. The control and 5 boxes of stone are required to operate the heater. The rail, reflector and embedding flange are optional.\u003c\/p\u003e\n        \u003ch3\u003eLead time\u003c\/h3\u003e\n        \u003cp\u003eDelivery estimates are shown on this page and at checkout. If you need a date before you commit, call us and we will confirm the current position with the distributor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"hcliff11-tinted\" id=\"specs\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eReference\u003c\/p\u003e\n    \u003ch2\u003eHUUM CLIFF 11 specifications\u003c\/h2\u003e\n    \u003cdetails class=\"hcliff11-more\" open\u003e\n      \u003csummary\u003eFull specification tables\u003c\/summary\u003e\n      \u003cdiv class=\"hcliff11-tw\"\u003e\u003ctable class=\"hcliff11-spec\"\u003e\n\u003ccaption\u003eFrom the CLIFF User Manual USA v9 (November 2025), Tables 1 to 3\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater output\u003c\/th\u003e\n\u003ctd\u003e11 kW at 240 V, 8.5 kW at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom volume\u003c\/th\u003e\n\u003ctd\u003e354 to 566 adjusted cu. ft. at 240 V, 265 to 424 cu. ft. at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum room height\u003c\/th\u003e\n\u003ctd\u003e86.6 in (2200 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated current\u003c\/th\u003e\n\u003ctd\u003e43.75 A at 240 V, 37.98 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCircuit breaker\u003c\/th\u003e\n\u003ctd\u003e50 A at 240 V, 50 A at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum supply cable\u003c\/th\u003e\n\u003ctd\u003e8 AWG at 240 V, 8 AWG at 208 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone capacity\u003c\/th\u003e\n\u003ctd\u003eAbout 165 lb (75 kg), 5 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone size\u003c\/th\u003e\n\u003ctd\u003e1.2 to 1.9 in (3 to 5 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody size\u003c\/th\u003e\n\u003ctd\u003e10.6 in W x 10.6 in D x 38.4 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance to the wall beside it\u003c\/th\u003e\n\u003ctd\u003e15.0 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall to wall across the heater\u003c\/th\u003e\n\u003ctd\u003e40.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance above the heater\u003c\/th\u003e\n\u003ctd\u003e47.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFloor standing, anchored with the supplied brackets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eSeparate certified control required, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n      \u003cdiv class=\"hcliff11-tw\"\u003e\u003ctable class=\"hcliff11-spec\"\u003e\n\u003ccaption\u003ePart number, certification and warranty\u003c\/caption\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eH1004032\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater weight, empty\u003c\/th\u003e\n\u003ctd\u003e37.5 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003eSingle phase, 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eSGS Listed for North America (SGSNA\/20\/SUW\/00067X)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003eHUUM limited warranty, 3 years for private use and 1 year for commercial use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"compare\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eThe range\u003c\/p\u003e\n    \u003ch2\u003eHUUM CLIFF 11 against the rest of the CLIFF range\u003c\/h2\u003e\n    \u003cp class=\"hcliff11-lead\"\u003eEvery figure below is HUUM's own, from its US manual, and the breaker column is the manufacturer's minimum rather than a design for your house.\u003c\/p\u003e\n    \u003cp\u003eScroll the table sideways to see every model.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-tw hcliff11-tw--scroll\"\u003e\u003ctable class=\"hcliff11-cmp\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-cliff-mini-4-electric-sauna-heater\"\u003e\u003cspan class=\"hcliff11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcliff11-cmp-m\"\u003eCLIFF Mini 4\u003c\/span\u003e\u003cspan class=\"hcliff11-cmp-here\"\u003e4 kW, 106 to 177 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-cliff-6-electric-sauna-heater\"\u003e\u003cspan class=\"hcliff11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcliff11-cmp-m\"\u003eCLIFF 6\u003c\/span\u003e\u003cspan class=\"hcliff11-cmp-here\"\u003e6 kW, 177 to 318 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/huum-cliff-9-electric-sauna-heater\"\u003e\u003cspan class=\"hcliff11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcliff11-cmp-m\"\u003eCLIFF 9\u003c\/span\u003e\u003cspan class=\"hcliff11-cmp-here\"\u003e9 kW, 283 to 460 cu. ft.\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003cth class=\"hcliff11-me\"\u003e\n\u003cspan class=\"hcliff11-cmp-h\"\u003eHUUM\u003c\/span\u003e\u003cspan class=\"hcliff11-cmp-m\"\u003eCLIFF 11\u003c\/span\u003e\u003cspan class=\"hcliff11-cmp-here\"\u003eYou are here\u003c\/span\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput at 240 V\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003ctd\u003e9 kW\u003c\/td\u003e\n\u003ctd class=\"hcliff11-me\"\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated room\u003c\/td\u003e\n\u003ctd\u003e106 to 177 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu. ft.\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu. ft.\u003c\/td\u003e\n\u003ctd class=\"hcliff11-me\"\u003e354 to 566 cu. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent\u003c\/td\u003e\n\u003ctd\u003e14.58 A\u003c\/td\u003e\n\u003ctd\u003e25 A\u003c\/td\u003e\n\u003ctd\u003e37.5 A\u003c\/td\u003e\n\u003ctd class=\"hcliff11-me\"\u003e43.75 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaker\u003c\/td\u003e\n\u003ctd\u003e20 A\u003c\/td\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd class=\"hcliff11-me\"\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum cable\u003c\/td\u003e\n\u003ctd\u003e12 AWG\u003c\/td\u003e\n\u003ctd\u003e10 AWG\u003c\/td\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003ctd class=\"hcliff11-me\"\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTo the wall beside it\u003c\/td\u003e\n\u003ctd\u003e2.36 in\u003c\/td\u003e\n\u003ctd\u003e2.36 in\u003c\/td\u003e\n\u003ctd\u003e9.45 in\u003c\/td\u003e\n\u003ctd class=\"hcliff11-me\"\u003e15.0 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone\u003c\/td\u003e\n\u003ctd\u003e4 boxes\u003c\/td\u003e\n\u003ctd\u003e5 boxes\u003c\/td\u003e\n\u003ctd\u003e5 boxes\u003c\/td\u003e\n\u003ctd class=\"hcliff11-me\"\u003e5 boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003ch3\u003eWhen a CLIFF is the wrong heater\u003c\/h3\u003e\n    \u003cp\u003eThe CLIFF tops out at 11 kW and 566 cubic feet. If the side clearance is the problem, the STEEL of the same output asks for less of it and holds twice the stone. For a bigger room, a HIVE goes to 18 kW.\u003c\/p\u003e\n    \u003cp\u003eCompare the whole range on our \u003ca href=\"\/collections\/electric-sauna-heaters\"\u003eelectric sauna heaters\u003c\/a\u003e page, browse every \u003ca href=\"\/collections\/sauna-heaters\"\u003esauna heater\u003c\/a\u003e we carry, or see every model in our \u003ca href=\"\/collections\/huum\"\u003eHUUM sauna heaters\u003c\/a\u003e collection.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n    \u003ch2\u003eHUUM CLIFF 11 questions buyers ask before ordering\u003c\/h2\u003e\n    \u003cdiv class=\"hcliff11-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat size sauna will the HUUM CLIFF 11 heat?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-fb\"\u003e\u003cp\u003eHUUM rates it for 354 to 566 cubic feet on 240 volts, or 265 to 424 cubic feet on 208 volts. Measure length by width by height in feet, then add 3.3 cubic feet for every square foot of uninsulated glass, brick or tile wall, and size from that number.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM CLIFF 11 come with a control?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-fb\"\u003e\u003cp\u003eNo. Every HUUM electric heater needs a separate certified control, bought separately, and the control unit goes outside the hot room. HUUM's matched control is the UKU, the controller this heater was certified with, in Local or Wi-Fi form.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many boxes of stone does the HUUM CLIFF 11 need?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-fb\"\u003e\u003cp\u003e5 boxes. The heater holds about 165 lb (75 kg) and HUUM asks for stone 1.2 to 1.9 inches (3 to 5 cm) across. HUUM's own stone is olivine diabase in 33 pound boxes. The heater may not be run before it is properly filled.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat breaker and wire does the HUUM CLIFF 11 need?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-fb\"\u003e\u003cp\u003eOn 240 volts it draws 43.75 A and HUUM specifies a 50 A breaker with 8 AWG cable. On 208 volts it is 37.98 A, a 50 A breaker and 8 AWG. The cable must meet UL 62 in the United States or CSA 49 in Canada, and your electrician sizes the install to the National Electrical Code and to local amendments. On this model HUUM's breaker figure is below what the Code's continuous-load rule gives for its rated current, so your electrician and inspector decide the breaker and cable, and they may be larger than HUUM's figure.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the HUUM CLIFF 11 UL listed?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-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 CLIFF 11 for the United States and Canada under certificate SGSNA\/20\/SUW\/00067X, to UL 60335-1, CAN\/CSA C22.2 No. 60335-1, CAN\/CSA E60335-2-53 and IEC 60335-2-53. The listing applies on the conditions SGS records against it: the heater is used with sauna stones, run from an approved sauna heater controller (the listing was evaluated with the UKU), supplied by conductors rated to at least 90 degrees C, and carries the warning tag on the bottom rung of the frame. SGS also requires CLIFF and STEEL models to be anchored in place. Inspectors differ on what they ask to see for a sauna heater, so check with yours before you buy. We can send you the certificate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I install the HUUM CLIFF 11 myself?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-fb\"\u003e\u003cp\u003eNot if you want the warranty. HUUM's warranty requires the heater to be installed and connected by a licensed electrician, with proof presented to HUUM, and HUUM recommends a specialist lays the stone. The heater is hardwired and the manual forbids cable with non heat resistant PVC insulation. Keep the electrician's invoice.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM CLIFF 11 need a GFCI breaker?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-fb\"\u003e\u003cp\u003eHUUM's manual says it is recommended to connect the heater without one. Whether you can follow that depends on where the sauna goes and which edition of the electrical code your area has adopted. An outdoor sauna at a home may fall inside the Code's ground fault requirement for outdoor outlets at these ratings, depending on the edition adopted and how your inspector reads it, while an indoor hardwired heater usually is not caught. Where the manual and the adopted code disagree, the code and your inspector decide.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan the HUUM CLIFF 11 be set into the bench?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-fb\"\u003e\u003cp\u003eYes. HUUM says the CLIFF can be embedded into the sauna bench, with at least 21.7 inches (550 mm) of the heater above the bench surface, and the CLIFF and STEEL embedding flange covers the cut edge.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the HUUM CLIFF 11 need a UKU extension box?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-fb\"\u003e\u003cp\u003eNo. The extension box is for HUUM heaters above 11 kW, which means the HIVE 12, 15 and 18. This heater runs from the UKU's main module on its own.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat warranty comes with the HUUM CLIFF 11?\u003c\/summary\u003e\u003cdiv class=\"hcliff11-fb\"\u003e\u003cp\u003eHUUM warrants its electric heaters, wood stoves and controls for 3 years in a private sauna and 1 year in a commercial one, from the date of purchase, with spare parts covered for 1 year. Heating elements, controller sensors, stones, HUUM accessories, and wood stove door glass and ash grates are excluded, and so is damage from unsuitable stones or from a heater sized wrong for the room. HUUM counts it as commercial use if a registered business uses the product commercially, if a private user uses it commercially, or if a private user runs it for more than 1,500 hours in a 12 month period. For the warranty to apply, the heater has to be installed and connected by a licensed electrician with proof presented to HUUM, installed and operated to HUUM's manual and to local building, electrical and fire codes, and installed complete. Damage found on delivery has to be reported to us within 48 hours of delivery, with photographs and before the heater is installed; that is our window, and because it is shorter than HUUM's 7 days, it is the one that applies to the HUUM warranty. Any defect has to be reported within 30 days of discovering it. Because elements are excluded, we stock them as \u003ca href=\"\/products\/huum-cliff-steel-heating-element\"\u003ereplacement parts\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cdiv class=\"hcliff11-c\"\u003e\n\u003cdiv class=\"hcliff11-close\" id=\"order\"\u003e\n  \u003cdiv class=\"hcliff11-c\"\u003e\n    \u003cp class=\"hcliff11-eyebrow\" style=\"color:#E8A33D\"\u003eOne last thing\u003c\/p\u003e\n    \u003ch2\u003eGet the heater, the control and the stone right\u003c\/h2\u003e\n    \u003cp\u003eTell us the room dimensions and how the walls are built and we will walk you through the manual's own figures for output, circuit, clearances and stone before you order, and your electrician confirms the circuit. If the room is borderline we will say so rather than sell you the bigger heater.\u003c\/p\u003e\n    \u003cdiv class=\"hcliff11-who\"\u003e\n      \u003cimg class=\"hcliff11-av\" src=\"https:\/\/recoveryroomdirect.com\/cdn\/shop\/files\/recovery_room_direct_specialist_customer_service.png?v=178611576\u0026amp;width=128\" alt=\"Sauna specialist at Recovery Room Direct\" width=\"52\" height=\"52\"\u003e\n      \u003cp\u003e\u003cb\u003eRecovery Room Direct\u003c\/b\u003e\u003cspan\u003eSauna specialists\u003c\/span\u003e\u003cspan\u003eMonday to Saturday, 9AM to 6PM ET\u003c\/span\u003e\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003ca class=\"hcliff11-btn\" href=\"tel:+18885005675\"\u003eCall (888) 500-5675\u003c\/a\u003e\n    \u003ca class=\"hcliff11-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\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"Default Title","offer_id":53514368156015,"sku":"H1004032","price":2879.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/huum-cliff-11-studio.jpg?v=1790068908","url":"https:\/\/recoveryroomdirect.com\/products\/huum-cliff-11-electric-sauna-heater","provider":"Recovery Room Direct","version":"1.0","type":"link"}