STEEL electric sauna heater is a classy and powerful pick for a modern home sauna. With a sleek design and small safety distances, this heater is perfect for compact steam rooms. But don’t let its slender shape mislead you – the built-in air tunnel ensures effective airflow and quick heating. Plus, the heater holds a large amount of sauna stones for gentle and long-lasting steam. And let’s not forget about its eye-catching stainless steel enclosure, which creates a stunning contrast with the natural sauna stones.
We strongly recommend including a safety railing in your sauna—either a custom design from your builder or our HUUM safety railing—for enhanced safety and comfort.
| Model | STEEL 6 | STEEL 9 | STEEL 11 |
|---|---|---|---|
| Heater | |||
| Power rating (kW) | 6 | 9 | 10,5 |
| Steam room min (m3) | 5 | 8 | 10 |
| Steam room max (m3) | 9 | 13 | 16 |
| Holding capacity of sauna rocks (kg) | 150 | 150 | 150 |
| Weight (kg) | 15 | 15 | 16 |
| Height (mm) | 975 | 975 | 975 |
| Width (mm) | 320 | 320 | 320 |
| Depth (mm) | 320 | 320 | 320 |
| Connection | |||
| Fuse | 10 A | 16 A | 16 A |
| Supply voltage, 3-phase | 3/N~400V | 3/N~400V | 3/N~400V |
| Power cable (N x mm2) | 5 x 1,5 | 5 x 2,5 | 5 x 2,5 |
| Safety distances | |||
| A (mm) | 50 | 100 | 100 |
| B (mm) | 420 | 520 | 520 |
| C (mm) | 320 | 320 | 320 |
| H (mm) | 975 | 975 | 975 |

- electric sauna heater
- adjustable legs
- UKU sauna control system
- 150 kg of sauna stones with a diameter of 3–5 cm
- Heat-resistant power cable
- You can choose a control panel that suits the interior design of your sauna: GLASS, CLASSIC, or WOOD
-
- The UKU control system set already includes a black plastic control panel CLASSIC Black.
- The safety railing complements the design and adds safety.
- As a design option, STEEL electric sauna heater can be embedded into the sauna bench.
-
- When the heater is embedded, at least 550 mm of the heater should protrude from the sauna bench surface.
- Use the embedding flange of CLIFF/STEEL electric sauna heater to cover the cut rims of the opening.
STEEL electric sauna heater is a classy and powerful pick for a modern home sauna. With a sleek design and small safety distances, this heater is perfect for compact steam rooms. But don’t let its slender shape mislead you – the built-in air tunnel ensures effective airflow and quick heating. Plus, the heater holds a large amount of sauna stones for gentle and long-lasting steam. And let’s not forget about its eye-catching stainless steel enclosure, which creates a stunning contrast with the natural sauna stones.
We strongly recommend including a safety railing in your sauna—either a custom design from your builder or our HUUM safety railing—for enhanced safety and comfort.
| Model | STEEL 6 | STEEL 9 | STEEL 11 |
|---|---|---|---|
| Heater | |||
| Power rating (kW) | 6 | 9 | 10,5 |
| Steam room min (m3) | 5 | 8 | 10 |
| Steam room max (m3) | 9 | 13 | 16 |
| Holding capacity of sauna rocks (kg) | 150 | 150 | 150 |
| Weight (kg) | 15 | 15 | 16 |
| Height (mm) | 975 | 975 | 975 |
| Width (mm) | 320 | 320 | 320 |
| Depth (mm) | 320 | 320 | 320 |
| Connection | |||
| Fuse | 10 A | 16 A | 16 A |
| Supply voltage, 3-phase | 3/N~400V | 3/N~400V | 3/N~400V |
| Power cable (N x mm2) | 5 x 1,5 | 5 x 2,5 | 5 x 2,5 |
| Safety distances | |||
| A (mm) | 50 | 100 | 100 |
| B (mm) | 420 | 520 | 520 |
| C (mm) | 320 | 320 | 320 |
| H (mm) | 975 | 975 | 975 |

- electric sauna heater
- adjustable legs
- UKU sauna control system
- 150 kg of sauna stones with a diameter of 3–5 cm
- Heat-resistant power cable
- You can choose a control panel that suits the interior design of your sauna: GLASS, CLASSIC, or WOOD
-
- The UKU control system set already includes a black plastic control panel CLASSIC Black.
- The safety railing complements the design and adds safety.
- As a design option, STEEL electric sauna heater can be embedded into the sauna bench.
-
- When the heater is embedded, at least 550 mm of the heater should protrude from the sauna bench surface.
- Use the embedding flange of CLIFF/STEEL electric sauna heater to cover the cut rims of the opening.
Accessories
Sauna heaters for small steam rooms
STEEL electric sauna heater has been developed with a focus on apartment saunas. It’s a classy alternative for electric sauna heaters that hold a small amount of sauna stones and often provide sharp and abrupt steam. The compactness of this sauna heater doesn’t mean any compromises on appearance.
Well-planned construction ensures the efficiency and small safety distances of the slim CLIFF sauna heater. Internal air tunnel ensures effective air flow and expedites sauna heating by 25%. In addition, it prolongs the useful life of the heating elements. CLIFF electric sauna heater holds as much as 75 kg of stones, and the CLIFF Mini fits 60 kg of sauna stones.
STEEL and CLIFF sauna heaters that have minimized the ecological footprint
STEEL electric sauna heaters form an inseparable pair with the award-winning CLIFF electric sauna heaters. One could not exist without the other. These two sauna heaters are produced from the same stainless steel sheet. The fins of CLIFF sauna heaters are made from the cutouts of STEEL sauna heaters, which ensures that all material is utilized and there is no excessive waste.
Our daily mission is to employ environment-friendly production methods, so that we can hand nature in its current beauty down to future generations.

















