Description
Product information updated 2026-06-04
HUUM STEEL – this is a modern, very narrow and elegant electric sauna heater, designed for small and medium-sized saunas, where every bit of space matters. This heater stands out with its minimalist stainless steel design, fast heating, and holds up to 150 kg of stones, providing soft, long-lasting steam.
For those wanting an even more compact solution, HUUM STEEL Mini model features lower power and size, but retains all the main features of HUUM heaters – modern design, smart control, and high steam quality.
Main advantages:
- Very narrow design: width from 32 cm – an excellent choice for space-saving saunas.
- Large stone capacity: 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 the heater to be controlled remotely.
- Fast heating: integrated air tunnel technology helps reach a high temperature in a shorter time.
- Minimalist design: elegant stainless steel construction fits perfectly with modern interiors.
Specifications
| Model | STEEL Mini 4 |
| Power, kW | 3,5 |
| Control | Separate control panel |
| Sauna volume, m³ | 3 – 5 |
| Stone capacity, kg | 60 |
| Stone size, cm | Ø 3 – 5 |
| Heater dimensions (W/H/D), mm | 310 / 975 / 160 |
| Weight, kg | 14,5 |
| Safe distance from sides, mm | 50 |
| Required installation width, mm | 420 |
| Required installation depth, mm | 310 |
| Minimum distance from floor, mm | 160 |
| Heater height, mm | 975 |
| Power supply | 1/N~230 V |
| Fuses, 1 phase | 16 A |
| Cable cross-section, mm² | 3 × 2,5 |
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