{"product_id":"huum-hive-18-18kw-electric-sauna-heater","title":"HUUM Hive 18 18 kW Electric Sauna Heater","description":"\u003cp style=\"margin-bottom: 16px;\"\u003e\u003cstrong\u003eThe HUUM HIVE 18 is a 18 kW floor-standing electric sauna heater for rooms of 636–989 cubic feet on a 240V single-phase supply. It holds 528 lb of stones and requires a HUUM UKU control, sold separately, plus a UKU Extension Box.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003eHIVE is the large-format HUUM: a geometric stone mass built for health clubs, spas and big private rooms. The stone charge is the point — up to 528 lb — which is what produces the slow, heavy steam a commercial room needs when the door opens every few minutes.\u003c\/p\u003e\n\u003cul style=\"margin-top: 8px; padding-left: 18px;\"\u003e\n\u003cli\u003eSuitable for commercial use\u003c\/li\u003e\n\u003cli\u003eWorks with UKU controls (sold separately)\u003c\/li\u003e\n\u003cli\u003eWorks with UKU extension box (sold separately)\u003c\/li\u003e\n\u003cli\u003eLarge 528 pound stone capacity (required 16 boxes sold separately)\u003c\/li\u003e\n\u003cli\u003eDirect contact between stones and heating elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 16px; margin-top: 8px;\"\u003e\n\u003cdiv style=\"flex: 1 1 220px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eIn the Box\u003c\/strong\u003e\u003cbr\u003e18.0kW Sauna Heater, Adjustable Legs, Pre-Installed HIVE Air Tunnel, Installation and Operation Manual\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eRequired to Operate\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003eThese are not included. You need them before the sauna will run.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 16px; margin-top: 8px;\"\u003e\n\u003cdiv style=\"flex: 1 1 220px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eSauna Stones\u003c\/strong\u003e\u003cbr\u003e528 lb of rounded olivine, 5-10cm — that is 16 boxes at 33 lb, 528 lb supplied. Never run the unit empty.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 220px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eUKU Control\u003c\/strong\u003e\u003cbr\u003eEvery HUUM electric heater ships without controls. A HUUM UKU control is required and mounts outside the hot room.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 220px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eUKU Extension Box\u003c\/strong\u003e\u003cbr\u003eThis heater is over 11 kW, which is more than a UKU can switch on its own. The extension box is required as well as the control.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 220px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eElectrical\u003c\/strong\u003e\u003cbr\u003eA dedicated 240V single-phase circuit, hardwired by a licensed electrician.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eHUUM Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eH1003032\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003ePower Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e18 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSauna Room Volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e636–989 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eStone Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e528 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eRecommended Stones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRounded olivine, 5-10cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMaximum Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e230 °F (110 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eExterior Finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eBrushed Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e22\"D (560mm) x 29.5\"H (750mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e22\" (560mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e53.5 lbs (24.27kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eOn the Floor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eControls\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eNot included — requires a HUUM UKU control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMountable Inside the Sauna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eYES\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eCE, IPX4, SGS listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eShips\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eLTL freight, curbside\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMade In\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eEstonia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 0.9em; color: #666; margin-top: 6px;\"\u003eMarks as supplied by HUUM: CE, IPX4, SGS listed. Requirements vary by jurisdiction — confirm with your building department and insurer before you install.\u003c\/p\u003e\n\u003ch2\u003eElectrical Requirements\u003c\/h2\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px;\"\u003e\n\u003cdiv style=\"flex: 1 1 140px; border: 1px solid #ddd; border-radius: 4px; padding: 10px 12px;\"\u003e\n\u003cstrong style=\"display: block; font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: #6b6b6b; margin-bottom: 2px;\"\u003ePart Number\u003c\/strong\u003eH1003032\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; border: 1px solid #ddd; border-radius: 4px; padding: 10px 12px;\"\u003e\n\u003cstrong style=\"display: block; font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: #6b6b6b; margin-bottom: 2px;\"\u003ePower\u003c\/strong\u003e18 kW\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; border: 1px solid #ddd; border-radius: 4px; padding: 10px 12px;\"\u003e\n\u003cstrong style=\"display: block; font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: #6b6b6b; margin-bottom: 2px;\"\u003eVoltage\u003c\/strong\u003e240V\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; border: 1px solid #ddd; border-radius: 4px; padding: 10px 12px;\"\u003e\n\u003cstrong style=\"display: block; font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: #6b6b6b; margin-bottom: 2px;\"\u003ePhase\u003c\/strong\u003e1PH\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; border: 1px solid #ddd; border-radius: 4px; padding: 10px 12px;\"\u003e\n\u003cstrong style=\"display: block; font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: #6b6b6b; margin-bottom: 2px;\"\u003eRated Amps\u003c\/strong\u003e75 A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 16px; margin-top: 8px;\"\u003e\n\u003cdiv style=\"flex: 1 1 280px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eConnection\u003c\/strong\u003e\u003cbr\u003eHardwired on a dedicated circuit.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 280px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eWho Installs It\u003c\/strong\u003e\u003cbr\u003eA licensed electrician, working to the installation manual and your local electrical code.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 280px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eControl Wiring\u003c\/strong\u003e\u003cbr\u003eThe UKU power unit sits between the supply and the heater. The panel and temperature sensor are wired back to it.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 280px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eExtension Box\u003c\/strong\u003e\u003cbr\u003eThis heater is over 11 kW, so a UKU Extension Box is required in addition to the control. The UKU on its own cannot switch this load.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSizing\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003e\u003cstrong\u003eThe HUUM HIVE 18 is rated for 636–989 cubic feet.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003eMeasure width × depth × height in feet. Add extra volume for anything that soaks up heat rather than reflecting it — glass, tile, concrete, stone and exposed log all make a room behave larger than its raw measurement. Size to the larger number: an undersized heater never gets the room right, and running it flat out shortens the elements.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f7f7f7; text-align: left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f7f7f7; text-align: left;\"\u003eOutput\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f7f7f7; text-align: left;\"\u003eRoom Volume\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f7f7f7; text-align: left;\"\u003eStones\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f7f7f7; text-align: left;\"\u003eRated Amps\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003ca href=\"\/products\/huum-hive-mini-6-6kw-electric-sauna-heater\"\u003eHIVE Mini 6\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e6 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e177–318 cu ft\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e330 lbs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003ca href=\"\/products\/huum-hive-mini-9-9kw-electric-sauna-heater\"\u003eHIVE Mini 9\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e9 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e283–460 cu ft\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e330 lbs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e37.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003ca href=\"\/products\/huum-hive-mini-11-10-6kw-electric-sauna-heater\"\u003eHIVE Mini 11\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e10.6 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e354–566 cu ft\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e330 lbs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e43.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003ca href=\"\/products\/huum-hive-12-12kw-electric-sauna-heater\"\u003eHIVE 12\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e12 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e424–636 cu ft\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e528 lbs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003ca href=\"\/products\/huum-hive-15-15kw-electric-sauna-heater\"\u003eHIVE 15\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e15 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e530–813 cu ft\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e528 lbs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e62.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eHIVE 18\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e18 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e636–989 cu ft\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e528 lbs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 12px;\"\u003e\u003ca href=\"\/pages\/sauna-heater-size-calculator\"\u003eWork out your room with the sauna heater size calculator\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eAccessories for This Model\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003e\u003cstrong\u003eHUUM lists these accessories for the HIVE 18. All are sold separately.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 16px; margin-top: 8px;\"\u003e\n\u003cdiv style=\"flex: 1 1 220px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eEmbedding flange\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"\/products\/huum-h3003022-embedding-flange-for-hive-series-sauna-heaters\"\u003eHUUM Embedding Flange for HIVE Series Sauna Heaters (H3003022)\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 220px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eReflector panel\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"\/products\/huum-h3003032-reflector-panel-for-hive-series-sauna-heaters\"\u003eHUUM Reflector Panel for HIVE Series Sauna Heaters (H3003032)\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 220px; border: 1px solid #ddd; border-radius: 4px; padding: 12px;\"\u003e\n\u003cstrong\u003eSafety rail\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"\/products\/huum-h3003012-safety-rail-for-hive-series-sauna-heaters\"\u003eHUUM Safety Rail for HIVE Series Sauna Heaters (H3003012)\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eInstallation \u0026amp; Use Notes\u003c\/h2\u003e\n\u003cul style=\"margin-top: 8px; padding-left: 18px;\"\u003e\n\u003cli\u003eMount to the clearances given in the installation manual.\u003c\/li\u003e\n\u003cli\u003eThe pre-installed HIVE air tunnel is in the box. The supplier states it shortens heat-up time and increases the life of the heating elements.\u003c\/li\u003e\n\u003cli\u003eHUUM specifies rounded olivine stones, not the split-face stones other brands use. Load them loosely by hand so air moves freely, and never run the heater with an empty or tightly packed stone space.\u003c\/li\u003e\n\u003cli\u003eThe UKU temperature sensor mounts inside the hot room on the wall above the heater. Sensor position changes how the room behaves more than any setting on the panel does.\u003c\/li\u003e\n\u003cli\u003ePour small ladlefuls of clean water onto the stones only — never onto the body or the elements. Mix any scented oil into the bucket first.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003ch3\u003eDoes the HUUM HIVE 18 include a control?\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003eNo, and it cannot run without one. Every HUUM electric heater ships with no controls on the body — you add a HUUM UKU control, sold separately, which mounts outside the hot room and lets you bring the sauna up to temperature before you walk in. This heater is over 11 kW, so it needs a UKU Extension Box as well.\u003c\/p\u003e\n\u003ch3\u003eWhat stones does the HUUM HIVE 18 take?\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003eRounded olivine, 5-10cm — 16 boxes, 528 lb in total. HUUM specifies rounded stones rather than the split-face stones other brands use: they suit the open HUUM basket and give a milder steam. Stones are not included.\u003c\/p\u003e\n\u003ch3\u003eIs the HUUM HIVE 18 certified for use in the US?\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003eHUUM supplies it with these marks: CE, IPX4, SGS listed. Requirements vary by jurisdiction, so confirm with your building department and insurer before you book the electrician. Ask us if you need the certification documents.\u003c\/p\u003e\n\u003ch2 style=\"margin-bottom: 16px;\"\u003eDownloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0903\/2666\/3539\/files\/HUUM-HIVE-Sauna-Heater-IOM.pdf?v=1786903899\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eHUUM-HIVE-Sauna-Heater-IOM.pdf\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0903\/2666\/3539\/files\/HUUM-Element-Requirements.pdf?v=1786902938\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eHUUM-Element-Requirements.pdf\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0903\/2666\/3539\/files\/HUUM_Certificate_of_Compliance.pdf?v=1786903532\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eHUUM Certificate of Compliance.pdf\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0903\/2666\/3539\/files\/HUUM-Warranty.pdf?v=1786900750\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eHUUM-Warranty.pdf\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"HUUM","offers":[{"title":"Default Title","offer_id":63970199896435,"sku":"H1003032","price":3356.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/2666\/3539\/files\/huum-hive-sauna-heater.webp?v=1786904463","url":"https:\/\/allseasonpatio.com\/products\/huum-hive-18-18kw-electric-sauna-heater","provider":"All Season Patio Company","version":"1.0","type":"link"}