Choose your HUUM Steel sauna heater here, with the Steel 6, Steel 9 and Steel 10.5 offered as a bare heater or a package with the control and stones. This slim electric sauna heater puts a large load of stones in a floor-standing column that takes little room beside your sauna bench, a good fit for a home sauna where floor space is tight. Start with your room measurements, then choose whether you need the heater alone or the package.


HUUM Steel: a plain stainless column

Made in Estonia, this plain stainless steel column measures 12.6 inches square and stands 38 inches tall, and its small safety distances let it sit within a few inches of the wall. Its internal air duct heats the room up to 25 percent faster. Its stone capacity is 331 pounds, with stones directly on the heating elements for soft sauna heating and lasting steam. Explore the HUUM range or compare electric heaters across the store.

Choose from three sizes

The Steel 6 is 6 kW for 212 to 353 cubic feet, and the Steel 9 is 9 kW for 318 to 529 cubic feet. The Steel 10.5 is 10.5 kW for 353 to 600 cubic feet, with heater weights across the series ranging from 33 to 35 pounds. For a very small sauna, open the wall-mounted Steel Mini page. Compare the slimmer Cliff column for its footprint of 10.6 inches square, lift-off front ribs and 165 pounds of stones.

The UKU, stones and add-ons

Every model needs a HUUM UKU control outside the hot room, with standard, Wi-Fi, Mirror or Gold versions to choose from. The Wi-Fi version lets you start the sauna from your phone with the HUUM mobile app. Add the control and ten boxes of sauna stones to a bare heater, or choose the package with the control and 330 pounds of rounded olivine stones. A safety railing, reflector panel and embedding flange are optional. For a much bigger room, explore the large round Hive heater.

Why buy from My Cozy Outdoors?

We are an authorized HUUM dealer. Every listing carries the full manufacturer warranty. Call us with your room measurements and we will talk you through the size, heater and control.

Your questions answered

Which HUUM Steel size do I need?

Measure your room in cubic feet. The Steel 6 covers 212 to 353, the Steel 9 covers 318 to 529, and the Steel 10.5 covers 353 to 600 cubic feet. Below 212 cubic feet, look at the wall-mounted Steel Mini. Call us with your measurements.

HUUM Steel or HUUM Cliff?

Both are stainless columns with an internal air duct. The plain sided Steel measures 12.6 inches square and holds 331 pounds of stones. The Cliff measures 10.6 inches square and holds 165 pounds, with front ribs that lift off. Choose between more stones and a smaller footprint.

Who makes the HUUM Steel?

HUUM is an Estonian maker of electric sauna heaters and wood burning sauna stoves. Every Steel is made in Estonia. We sell the range as an authorized dealer, and every listing carries the full manufacturer warranty.

Does the HUUM Steel come with a control and stones?

The bare heater comes with its manual, and you add the control and ten boxes of stones on the page. The package includes a HUUM UKU control with sensors and cables, plus 330 pounds of rounded olivine stones. Choose either listing for your Steel heater.