Description
Product information updated 2026-11-11
HUUM STEEL – this is a modern, extremely narrow and elegant electric sauna heater, designed for small and medium-sized saunas where every bit of space matters. This heater stands out with a minimalist stainless steel design, quick heating, and holds up to 150 kg of stones, providing gentle, long-lasting steam.
For those looking for an even more compact solution, the HUUM STEEL Mini model features lower power and size, while retaining all the main features of HUUM sauna heaters – modern design, smart control, and high steam quality.
Main advantages:
- Extremely narrow design: width from 32 cm – a perfect choice for space-saving saunas.
- Large amount of stones: up to 150 kg of stones (STEEL), up to 60 kg of stones (STEEL Mini).
- Smart control: HUUM UKU controller with Wi-Fi and a mobile app allows remote control of the heater.
- Quick heating: integrated air tunnel technology helps achieve a high temperature in less time.
- Minimalist design: elegant stainless steel construction perfectly matches modern interiors.
Specifications
| Model | STEEL 6 | STEEL 9 | STEEL 11 |
| Power, kW | 6,0 | 9,0 | 10,5 |
| Sauna volume, m³ | 5 – 9 | 8 – 13 | 10 – 16 |
| Stone capacity, kg | 150 | ||
| Stone size, cm | Ø 3 – 5 | ||
| Heater dimensions (W/H/D), mm | 320 / 975 / 320 | ||
| Weight, kg | 15 | 15 | 16 |
| Safe distance from sides, mm | 50 | 100 | 100 |
| Required installation width, mm | 420 | 520 | 520 |
| Required installation depth, mm | 320 | ||
| Heater height, mm | 975 | ||
| Power supply | 1/N~230 V / 3/N~400 V | 1/N~230 V / 3/N~400 V | 3/N~400 V |
| Fuses, 1 phase | 32 A | 40 A | – |
| Fuses, 3 phases | 10 A | 16 A | 16 A |
| Cable cross-section, mm² | 5 × 1,5 | 5 × 2,5 | 5 × 2,5 |
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