HUUM Steel 6: a slim floor standing sauna heater for rooms from 212 to 353 cubic feet
The HUUM Steel 6 is a floor standing electric sauna heater made in Estonia, rated at 6 kW for rooms from 212 to 353 cubic feet. Its slim stainless steel column is just 12.6 inches square and 38 inches tall and weighs 33 pounds. It needs only a few inches of clearance, so it suits a sauna with little floor space to spare. An internal air duct heats the room up to 25 percent faster. The column holds a full 331 pounds of stones that rest directly on the heating elements for soft heat and lasting steam.
You get the heater and the manual. It needs a HUUM UKU control to run, and you add that on the page. Choose the Wi-Fi version and you can start the sauna from your phone. Sauna stones are sold separately, so add the 10 boxes it needs on the page. A safety rail, a reflector panel, an embedding flange, and a bucket and ladle set are optional. Prefer the control and stones in one order? See the HUUM Steel 6 heater package. The HUUM Steel 6 ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
FAQ
What size sauna is this for?
The STEEL 6.0 serves sauna rooms from 212 to 353 cubic feet. It is the smallest floor-standing model in the STEEL series, with 9kW and 10.5kW versions above it and a slimmer wall-mounted 3.5kW model below it for very small rooms.
How much clearance does it need from walls?
The description notes safety distances brought down to about 2 inches (5 cm) on smaller models and 4 inches (10 cm) on larger ones, thanks to the well-optimized structure. Confirm the exact clearances for your installation in the manual before framing your sauna layout.
Why does a 6kW heater hold 331 pounds of stones?
Per the description, the intelligent design gives it a much higher stone capacity than other heaters, and more thermal mass means more stability, higher heat, and better steam capability. The ten required boxes of stones are sold in the Required Stones add-on on this page.
Does it include a control?
No. UKU sauna controls are sold separately, but you can add one from the Sauna Heater Controls options on this page, including Wi-Fi versions that let you control the sauna conveniently from your smartphone, exactly as the description highlights for this heater.
How quickly does it heat the room?
The features tab lists heating up to 25 percent faster due to an internal air duct. Combined with the large stone mass, the aim is a room that comes up to temperature quickly but then delivers a longer, milder heat once it is there.
What are its dimensions and mounting?
It is a floor model measuring 12.6 by 12.6 inches with a height of 38.4 inches, weighing 33 pounds before stones. The slim square footprint is the reason the series suits saunas with modest floor space, per the features tab on this page.
What warranty applies?
It carries a limited 5-year warranty excluding heating elements, with stainless steel construction and industrial-quality heating elements, designed, engineered, and made in Estonia. Note the amperage row in this page’s spec table is blank, so confirm circuit sizing with your electrician using the installation manual.