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HUUM STEEL Electric Sauna Heater - 3.5kW, 6kW, 9kW, 10.5kW

SKU H10072001
Save up to $433.00 Save $269.00
Original price $1,499.00
Original price $1,499.00 - Original price $2,299.00
Original price $1,499.00
Current price $1,230.00
$1,230.00 - $1,866.00
Current price $1,230.00
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HUUM STEEL Electric Sauna Heater - 3.5kW, 6kW, 9kW, 10.5kW

The compact STEEL Mini-series sauna heaters, with exceptionally short safety distances, is a wall-mounted model that is especially suited for modest sauna rooms. The STEEL Mini-series sauna heaters are designed for sauna spaces up to 212 cubic feet (CF).


  • Slender design
  • Suitable for use in small saunas with limited space
  • Small safety distances
  • Heats up to 25% faster due to internal air duct
  • For sauna rooms from up to 650 cu. ft.
  • Works with UKU controls (sold separately)
  • 133 pound stone capacity (required 4 boxes sold separately)
  • Direct contact between stones and heating elements
  • More exposed stones creates a longer and milder heat
  • Stainless steel construction
  • Stainless steel, industrial quality heating elements​
  • Wall-mount model
  • Designed, engineered, and made in Estonia
  • Dimensions: See charts below
  • Limited 5-year warranty (excluding elements)


  • Sauna heater
  • Wall fastening bracket 
  • Installation and operation manual
  • 5-Year limited warranty (excluding elements)



Model STEEL Series
Kilowatt Rating 3.5 KW, 6kW, 9kW, 10.5kW
Minimum Cubic Feet 123 CF, 212CF, 318 CF, 353 CF
Maximum Cubic Feet 212 CF, 353CF, 529 CF, 600 CF
Heater Weight 32 lbs, 33 lbs, 33 lbs, 35 lbs
Shipping Weight with Sauna Stones 165 lbs, 364 lbs, 364 lbs, 366 lbs
240V, Single Phase Amperage --
Width 12.6" W (320mm), 12.6" W (320mm), 12.6" (320mm), 12.6" (320mm)
Depth 6" D (150mm), 12.6" W (320mm), 12.6" (320mm), 12.6" (320mm)
Height 38.4" H (975mm), 38.4" H (975mm), 38.4" (975mm), 38.4" (975mm)


Controller Add Ons

Prepare your sauna experience with a few taps on the phone

Heat the sauna comfortably with the HUUM mobile app. The main benefit of this is you don’t even have to be home to heat your sauna. You could be anywhere and have your sauna hot and ready at exactly the moment you step in the door. This is a great advantage for many home sauna owners as well as accommodation establishments. Continue reading and discover:

  • how heating the sauna from your mobile phone can benefit you and also your accommodation establishment;
  • what do you need for heating your sauna through the mobile app;
  • how HUUM mobile app works and what features it offers.

Innovative sauna controllers for modern sauna lovers

If you value time and appreciate comfort, heating the sauna through HUUM mobile app might just bring your sauna to a new level. This easy and time-saving sauna controlling solution helps to better insert enjoyable sauna moments into a busy modern lifestyle. 


Local and WiFi Remote

(above) Local and WiFi controller 

(above) WiFi Glass Controller 


Installation and Operation Manuals:

Installation and Operation Manuals:

STEEL IOM 2022.pdf

Spec Diagram:

HUUM Stone Requirements.pdf

Elements Required:

HUUM Elements Required.pdf


HUUM Heater Warranty 2021.pdf

Certificate of Compliance:

HUUM Certificate of Compliance.pdf