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HUUM STEEL Mini Series 3.5kW Sauna Heater Package

Original price $2,272.00 - Original price $3,649.00
Original price
$2,272.00 - $3,649.00
Current price $2,272.00
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This HUUM Steel Mini sauna heater package comes complete with the traditionally designed STEEL Mini 3.5kW sauna heater, UKU control (WiFi optional), and sauna stones - everything you need to build your dream sauna experience. The package has been combined for use in sauna rooms up to 212 cubic feet (CF).


STEEL Mini 3.5kW Sauna Heater

  • 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 123 to 212 cu. ft.
  • Works with UKU controls
  • 133 pound stone capacity (required 4 boxes)
  • 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: 12.6" W (320mm) x 6" D (150mm) x 38.4" H (975mm)
  • Limited 5-year warranty (excluding elements)


  • Sleek Black control display panel
  • Multiple Color Options available
  • Settable on/off, time, temperature, and delay
  • Settable temperature range of 104-230F
  • Delayed start up to 48hrs in advance
  • Optional Built-in Wi-Fi interface for HUUM mobile app
  • 8 Language options: English, German, Russian, Italian, Finnish, Estonian, Polish and French
  • Inside/outside sauna room installation
  • Optional smart heating setting
  • Available decorative control display panels
  • Displays set temperature and room temperature
  • Temperature sensor
  • Door sensor to keep the heat inside the room
  • Remotely located main control module
  • Connects to lights and ventilation
  • Overheat protection
  • Child safety lock
  • Control Console Dimensions: 2.2"W (55mm) x 0.9"D (22mm) x 4.1"H (105mm)
  • Main Control Module Dimensions: 3.5"W (90mm) x 2.3"D (58mm) x 5.6"H (142mm)

Stones 12

  • Olivine diabase sauna stones
  • Rounded shape to complement heater design
  • Durable with high-heat capacity
  • Stones range from 1" to 2" (3-5 cm)

                          Package Includes

                          STEEL Mini 3.5kW Sauna Heater


                          • Black Control console
                          • Main control module
                          • Temperature sensor
                          • Door sensor
                          • Control display panel cable
                          • Temperature sensor cable
                          • Door sensor cable
                          • Installation and operation manual
                          • 5-Year limited warranty

                          Stones 12

                          • 132 lbs of 1" to 2" (3-5 cm) round Olivine sauna stones


                                                  STEEL Mini 3.5
                                                  Kilowatt Rating 3.5 KW
                                                  Minimum Cubic Feet 123 CF
                                                  Maximum Cubic Feet 212 CF
                                                  Heater Weight 32 lbs
                                                  Shipping Weight with Sauna Stones 165 lbs
                                                  240V, Single Phase Amperage --
                                                  Width 12.6" W (320mm)
                                                  Depth 6" D (150mm)
                                                  Height 38.4" H (975mm)
                                                  Minimum Temperature Setting 104 F
                                                  Maximum Temperature Setting 230 F
                                                  Shipping Weight 20 lbs
                                                  Console Dimensions
                                                  Width 2.2" (55mm)
                                                  Depth 0.9" (22mm)
                                                  Height 4.1" (105mm)
                                                  Main Module Dimensions
                                                  Width 3.5" (90mm)
                                                  Depth 2.3" (58mm)
                                                  Height 5.6" (142mm)
                                                  Display Panel Cable
                                                  Length 9.8 ft
                                                  AWG 22
                                                  Temp Sensor Cable
                                                  Length 16.4 ft
                                                  AWG 24
                                                  Door Sensor Cable
                                                  Length 16.4 ft
                                                  AWG 24



                                                  Our Shipping Partners: FedEx, UPS, Freight Club

                                                  Key Information:

                                                  1. Complimentary Shipping: Enjoy free shipping on sauna heaters and accessories across the Continental USA.
                                                  2. Multiple Warehouse Locations: Our products are dispatched from strategically located warehouses in Chicago, Illinois; Ashland, Wisconsin; Boise, Idaho; and New York, ensuring efficient delivery.
                                                  3. Customized Shipping Estimates: For accurate shipping timelines, please contact us directly. As delivery schedules vary depending on the product and season, we offer personalized estimates.
                                                  4. Extended Delivery Regions: We now also ship to Canada, Alaska, Puerto Rico, and Hawaii. Shipping costs for Canada are calculated at checkout. For deliveries to Alaska, Puerto Rico, and Hawaii, email us for a tailored shipping quote.
                                                  Shipping Explained in Detail: We collaborate with the leading distribution partners in the USA, giving us the unique advantage of working with all key players. This allows us to select the most appropriate partner for your order, based on stock availability and the fastest shipping route to your location.
                                                  It's important to understand that irrespective of the online dealer you choose, your order will be shipped from one of these central distributors. What sets us apart is our comprehensive network of partners and our direct relationships with the brands we represent. Our commitment to providing expert and knowledgeable customer support is evident from our resources like our YouTube channel. In rare cases where we need additional information, we have direct contacts with the factories to ensure your queries are promptly addressed.

                                                  However, please note that shipping times can vary, and while we strive for efficiency, there are limitations. For example, larger items like sauna heaters that require pallet shipping will generally take at least two weeks for delivery. We offer express shipping options for an additional fee, but we advise considering these timelines when placing your order.

                                                  For any inquiries or specific questions, feel free to contact us.

                                                  Warranty & Returns


                                                  30 day returns. Read the full return policy from here.


                                                  HUUM sauna products come with 5-year limited warranty.

                                                  This warranty covers faults in manufacture and material.

                                                  The warranty applies only to electric heaters that have been used according to the manual. Warranty does not cover heating elements. They are considered as consumable parts.

                                                  Warranty does not cover wear that occurs from natural usage.

                                                  Warranty is void if damage is caused by not following the instructions, product has been modified in any way or product has not been installed correctly.

                                                  Unboxing and Review of HUUM Steel

                                                  We visited HUUM at their HQ/factory. Check out what we did together.

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