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HUUM Steel Series

The HUUM Steel is a wall-mounted electric sauna heater that keeps the floor clear and the heat consistent. It comes in 6 kW, 9 kW, and 10.5 kW, so whether you are heating a compact indoor room or a larger home build, there is a model sized to your space. All three work with HUUM's UKU control system. Run it from a wall panel or connect via Wi-Fi and manage sessions from your phone.

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Our HUUM Steel Series Collection

The Steel is one of our most consistently chosen ranges at Heracles Wellness. It performs well and fits the kind of home sauna build where both performance and aesthetics count. We carry the full lineup across all three kW outputs, and our team can help you match the right model to your room volume if you are still working through the specifics.

 

What Sets the HUUM Steel Apart

 

A Wall-Mounted Design That Works in Tighter Rooms

If you're trying to save space, great! The HUUM steel can be mounted or positioned at the corner of your sauna to avoid overcrowding. Mounting the Steel on the wall rather than on the floor leaves more room for deeper benches, easier movement, and a more efficient overall layout.

The slim stainless steel body also maintains a strong, architectural presence without overwhelming the room. Its clean vertical profile complements modern sauna interiors, creating a streamlined look that integrates naturally into the space.

 

Airflow That Speeds Up Warm-Up Times

Inside the body, an integrated air tunnel channels airflow through the heater during operation. This circulation improves heat flow through the room and reduces warm-up times by up to 25% compared to standard designs. The room reaches temperature more evenly and holds it more steadily once it gets there.

 

Control That Fits How You Use It

Every Steel heater works with HUUM's UKU control system. The standard panel handles timing and temperature directly. The Wi-Fi version connects to the HUUM app, so you can preheat the sauna before you arrive and adjust the temperature without returning to the panel.  

 

UKU Sauna Control

Every Steel heater works with the UKU sauna controller either as a local unit or a WiFi-enabled version. The WiFi UKU connects to the HUUM mobile app, which lets you heat the sauna from your smartphone, set session times, and adjust the temperature before you step in.

If you'd prefer everything in a single purchase, the HUUM heater package bundles the heater and controller.

 

Steel or Cliff Mini — Which Wall-Mounted Heater Fits Your Build

Both are wall-mounted, but they suit different room sizes. The Steel handles standard to larger home sauna volumes, with a 10.5 kW output that covers bigger spaces. The Cliff Mini is built for smaller, tighter rooms where a lower output and reduced footprint are the right call. If you are not sure which suits your build, the HUUM sauna heater hub covers the full lineup.

 

Get Your HUUM Steel From Heracles Wellness

Whether you are fitting out a new build or replacing a heater that is not keeping up, the right model comes down to your room's cubic volume, insulation quality, and how you want to manage your sessions. 

Browse the full Steel collection at Heracles Wellness to compare outputs side by side, or get in touch with any of our sauna experts if you need help matching the right kW rating to your specific room.  

Frequently Asked Questions

What sizes does the HUUM Steel come in?
The Steel is available in 6 kW, 9 kW, and 10.5 kW. The right output depends on your room's cubic volume, insulation quality, and whether the space has glass panels or higher ceilings that affect heat retention.
How does the HUUM Steel compare to the Drop?
The Steel is a wall-mounted pillar heater suited to larger room volumes with higher stone capacity. The Drop has a more compact wall profile and comes in 4 kW, 6 kW, 7.5 kW, and 9 kW.
Do I need an electrician to install a HUUM Steel?
Yes. Every electric sauna heater requires a dedicated electrical supply run by a qualified electrician using armoured cable. This is not included in the product price. If you need clarity on the electrical requirements for a specific kW rating before you order, contact us, and we will walk you through it.

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