HUUM Steel Mini 3.5kw


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SKU STEELMINI34-240/1 Category

The HUUM STEEL Mini 3.5 kW electric sauna heater is the epitome of compact efficiency and sleek design. Crafted for smaller sauna rooms, this wall-mounted heater integrates seamlessly into spaces up to 212 cubic feet (CF). Its slender profile is matched by exceptionally short safety distances, making it an ideal choice for saunas with limited space. Engineered in Estonia, the STEEL Mini combines the functionality of quick heating with the aesthetic appeal of modern design, ensuring a superior sauna experience.



  • Compact and Efficient: Designed specifically for small sauna rooms, the STEEL Mini 3.5 efficiently heats spaces from 123 to 212 cubic feet.
  • Quick Heating: Features an internal air duct that heats up to 25% faster, reducing wait times for sauna users.
  • Large Stone Capacity: Despite its compact size, it has a 133-pound stone capacity, ensuring a consistent heat and enhanced steam capability.
  • Elegant Design: The slender, wall-mounted design not only saves space but also adds a touch of modern elegance to any sauna.
  • High-Quality Materials: Constructed with stainless steel and industrial-quality heating elements for durability and longevity.



  • Power: 3.5 kW, perfect for efficiently heating small sauna rooms.
  • Dimensions: 12.6″W x 6″D x 38.4″H, offering a space-saving solution without compromising on performance.
  • Weight: Heater weight is 32 lbs, with shipping weight including sauna stones at 165 lbs.
  • Sauna Size Compatibility: Suitable for sauna rooms between 123 CF and 212 CF.
  • Construction: Features stainless steel construction and heating elements, known for their durability and heat conduction.
  • Installation: Comes with a wall fastening bracket, making the installation process straightforward and secure.
Note: Control and sauna stones (4 boxes) required for operation are sold separately. Compatibility with UKU controls offers flexibility and convenience for users.

Resources:      HUUM Steel IOM         HUUM Steel Mini Spec Diagram           HUUM Certificate of Compliance          HUUM Elements Required          HUUM Heater Warranty         HUUM Stone Requirements          Sizing Your HUUM 2023


FREE SHIPPING! – Curbside Delivery included in price

Options & Features

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