SKU: 8245790414

HUUM STEEL Electric Sauna Heater

Sale price$553.50 Regular price$615.00
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

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Description

HUUM STEEL Electric Sauna HeaterThe HUUM STEEL Electric Sauna Heater is a slim and space efficient unit with remarkably small safety distances, making it perfect for saunas with limited space. Thanks to its well optimized structure, the safety distances from the walls are brought down to just 2" (5 cm) with smaller models and to 4" (10 cm) with larger models. The STEEL Mini heater also comes in an even slimmer 3. 5 kW wall mounted model which is particularly suitable for very small

The HUUM STEEL Electric Sauna Heater is a slim and space-efficient unit with remarkably small safety distances, making it perfect for saunas with limited space. Thanks to its well-optimized structure, the safety distances from the walls are brought down to just 2" (5 cm) with smaller models and to 4" (10 cm) with larger models. The STEEL Mini heater also comes in an even slimmer 3.5 kW wall-mounted model which is particularly suitable for very small sauna rooms.

Because of its intelligent design, the STEEL has a much higher stone capacity than other similar sized heaters. This provides a more consistent steam and higher heat. Everything you need for an elevated sauna experience. 

The HUUM STEEL is made of durable stainless steel, ensuring years of use and it comes with a 5 year warranty. 

UKU Controllers

The STEEL is controlled by the elegant UKU Controller (required for operation), in your choice of 9 different finishes. Choose from these options in either a locally controlled or WIFI enabled controller for remote use--heat up the sauna from your car on the way home!

The STEEL requires 331 lbs of stones. We recommend any type of igneous stones 5-10cm in size, or you can purchase 10 boxes of HUUM High Quality Olivine Stones which are collected in Finland.

Add the HUUM STEEL Safety Rail for added safety and an aesthetic touch.

Features

  • Sleek design
  • Suitable for use in saunas with modest space
  • Small safety distances
  • Heats up to 25% faster due to internal air duct
  • For sauna rooms from 123 to 600 cu. ft. (see Specification Tab for sizing)
  • Works with UKU controls (sold separately)
  • 331 pound stone capacity (133 lbs for STEEL Mini): requires 10 or 4 boxes respectively--sold separately)
  • Direct contact between stones and heating elements
  • More exposed stones create a longer and milder heat
  • Stainless steel construction
  • Stainless steel, industrial quality heating elements​
  • Floor standing model (STEEL Mini is wall-mounted)
  • Designed, engineered, and made in Estonia
  • Limited 5-year warranty (excluding elements)
Specifications

Choosing the right size:

STEEL Mini 4 - 3.5 kW Heater - For sauna rooms from 123 - 212 cubic feet

STEEL 6 - 6.0 kW Heater - For sauna rooms from 176 - 353 cubic feet

STEEL 9 - 9.0 kW Heater - For sauna rooms from 317 - 529 cubic feet

STEEL 11 - 10.5 kW Heater - For sauna rooms from 353 - 600 cubic feet

Package contents:

  • Sauna Heater
  • Wall-mount bracket (STEEL Mini)
  • Installation and operation manual
  • 5-year limited warranty (excluding heating elements)

Required for operation:

  • UKU Control
  • Stones 

Technical Specifications:

STEEL Mini 4

  • Dimensions: 12.6" W (320mm) x 6"D (150mm) x 38.4"H (975mm)
  • kW: 3.5
  • Volts: 240 
  • Amps: 14.58
  • Phase: 1PH
  • Room Volume: 123 - 212 CU. FT.
  • Rock Capacity: 122 lbs
  • Weight: 32 lbs 

       Connection:

  • Fuse: 20 A
  • Supply voltage:  240 V 1~
  • Power cable 12 AWG

      Safety Distances: (Refer to diagram below):

  • A - 50 mm
  • B - 420 mm

STEEL 6

  • Dimensions: 12.6" W (320mm) x 12.6"D (320mm) x 38.4"H (975mm)
  • kW: 6.0
  • Volts: 240 
  • Amps: 25
  • Phase: 1PH
  • Room Volume: 176 - 353 CU. FT.
  • Rock Capacity: 331 lbs
  • Weight: 33 lbs 

       Connection:

  • Fuse: 30 A
  • Supply voltage:   240 V 2~
  • Power cable:  10 AWG

      Safety Distances: (Refer to diagram below):

  • A - 50 mm
  • B - 420 mm

    STEEL 9

    • Dimensions: 12.6" W (320mm) x 12.6"D (320mm) x 38.4"H (975mm)
    • kW: 9.0
    • Volts: 240 
    • Amps: 37.5
    • Phase: 1PH
    • Room Volume: 317 - 529 CU. FT.
    • Rock Capacity: 331 lbs
    • Weight: 33 lbs 

           Connection:

    • Fuse: 50 A
    • Supply voltage:   240 V 2~
    • Power cable: 8 AWG

          Safety Distances: (Refer to diagram below):

    • A - 100 mm
    • B - 520 mm

      STEEL 11

      • Dimensions: 12.6" W (320mm) x 12.6"D (320mm) x 38.4"H (975mm)
      • kW: 10.5
      • Volts: 240 
      • Amps: 43.75
      • Phase: 1PH
      • Room Volume: 353 - 600 CU. FT.
      • Rock Capacity: 331 lbs
      • Weight: 35.3 lbs 

             Connection:

      • Fuse: 50 A
      • Supply voltage:   240 V 2~
      • Power cable: 6 AWG

            Safety Distances: (Refer to diagram below):

      • A - 100 mm
      • B - 520 mm

         Safety Distances Diagram

          Warranty

          HUUM LIMITED 5-YEAR WARRANTY

          General:

          The purchaser is obliged to review the user manual of the product and follow the requirements stated therein. The warranty does not extend to failures due to non-compliance with the rules of use provided for in the manual. The warranty is valid, if the product has a technical defect or fault caused by the manufacturer.

          • The warranty covers the replacement of the product or of parts with manufacturing defects.
          • The warranty period is 5 years from the date of purchase.
          • NOTICE: The warranty is based on the presentation of the purchase receipt/invoice. The right to submit a claim is valid on the condition that the product has been used only for the intended purpose and conditions.

          Warranty terms:

          • NOTICE: The warranty does not extend to heating elements of the electric heaters, these are considered expendable parts.
          • The warranty does not cover the defects caused by normal wear and tear of the product.
          • The warranty does not apply to heater stones.

          Warranty does not cover the defects which are caused by:

          • Transport and other accidental damage to the product;
          • Careless or improper storage and use of the product and overloading;
          • Failure to comply with the instructions for installation and operation of the product and safety requirements.

          Warranty does not apply:

          • If the product has been repaired by an unauthorized person, if non-approved parts have been added to the product, or if consumables not accepted by the manufacturer have been used (e.g. heating elements);
          • If the set of product is not complete.
              Shipping Notes
              • Free Standard Shipping on $100+ Orders to the USA.
              • Except Preorder products are shipped in 48 hours.
              • Delivery to the USA:
              1. Standard Shipping : 3-10 business days
              • If time is of the essence, please consider selecting expedited delivery for faster service.
              Exchange/Return Notes
              • We offer a 30-day return/exchange service after receiving.
              • Final sale items are not eligible for returns or exchanges.
              • To process your return/exchange, please contact us at [email protected]
              • Please click here for more details>>> Return & Exchange Policy
              SKU: 8245790414

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              Melissa Ploeckelman
              Dallas, US
              ★★★★★ 5
              Playing fetch for hours
              Size: Medium, Style: Medium (4 Pack)
              Tennis balls with the hairs pick up so much dirt and then that goes right into my dog's mouth. These are cleaner, my dog loves them, and they are easy to find when my pup decides he's done and drops it in the lawn or the snow. They hold up well after playing hours of fetch with my border collie.
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              Reviewed in the United States on April 23, 2026
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              S.
              Phoenix, US
              ★★★★★ 5
              Our favorite ball to play fetch with!
              Size: Medium, Style: Medium (4 Pack)
              The Chuckit! Ultra Ball Dog Toy is our dog’s favorite ball to play fetch with! Amazing quality and they have lasted us years! They are extremely durable and the perfect size for playing fetch. Great product!
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              Reviewed in the United States on May 8, 2026
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              S1
              Fort Morgan, US
              ★★★★★ 5
              Built tough for puppies
              Size: Medium, Style: Medium (4 Pack)
              These are great, the bright color stands out in grass outdoors they bounce well on hard floors indoors, and they’ve held up well even after a couple weeks of a very chew happy puppy playing with them.
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              Reviewed in the United States on May 26, 2026
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              Michael L. Howeth
              Birmingham, US
              ★★★★★ 5
              Best ball for retrieving ever
              Size: Medium, Style: Medium (4 Pack)
              I have been using a ball launcher to exercise my Border Collie. Up till now I have been using the launcher to throw tennis balls. Even with the launcher I can only throw the balls a couple of hundred feet. These balls go MUCH further. I am using a steep horse pasture to throw the balls and I have to make sure that I don't launch them past the fence at the end of the pasture. I think the thing that makes them go further is their weight combined with a smooth surface. They also have incredible bonce. They hit and just shoot way up into the air. Also, the tennis balls I was using were green. In my horse pasture they were easy for the Collie to miss since they blended right in to the grass. These balls with the orange with blue stripes are far easier for the dog to find. It's really hard to tire out a Border Collie but these balls do the job.
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              Reviewed in the United States on January 15, 2026
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              Carla
              Natrona Heights, US
              ★★★★★ 5
              Great fun for retrievers
              Size: Medium, Style: Medium (4 Pack)
              Great durable balls. Use these with or without the thrower. Lab puppy loves to play fetch and these are easy to spot in the yard. Our neighbor has 2 pit bulls who also plays with them. Will buy them again if need be.
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              Reviewed in the United States on May 27, 2026

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