HUUM · Electric Heaters
Steel Mini 4
Nature-inspired design and a mild, soft steam:
HUUM heaters for the finest sauna experience.
How should this sauna heater be selected?
Choose a sauna heater based on room volume, insulation, guest capacity, desired steam feel, and whether the site supports electric or wood-fired heat. Facilities should also review operating schedules and remote management needs. HUUM STEEL MINI 4 — Product Details The Steel Mini is a slim, wall-mounted electric sauna heater that retains the core features of the HUUM Steel series in a more compact form. Despite its size, it supports up to 60 kg…
What should be checked before installation?
Confirm heater output, electrical capacity, clearances, stone volume, controls, and ventilation. For existing buildings, review installation conditions with qualified professionals where required.
Related sauna planning topics
Compare product choices with ventilation, emergency response, booking, and operations planning.
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About this model
Steel Mini 4
HUUM STEEL MINI 4 — Product Details
The Steel Mini is a slim, wall-mounted electric sauna heater that retains the core features of the HUUM Steel series in a more compact form. Despite its size, it supports up to 60 kg of sauna stones, delivering an authentic and high-quality löyly experience. Its refined vertical design brings a modern aesthetic to the sauna space, while efficient heat circulation ensures stable temperatures and soft, long-lasting steam.
Key Features:
- Slim, space-saving wall-mounted design
- Stone capacity up to 60 kg for soft, pleasant steam
- Efficient heating for fast warm-up times
- Compatible with the HUUM app (supports UKU Wi-Fi control system)
Included in the Set:
- Electric sauna heater unit
- Adjustable legs
- UKU Wi-Fi control system
- Sauna stones (60 kg)
Required separately:
- Heat-resistant power cable
Heater accessories:
- Safety guard
- Installation flange (for built-in installation)
The HUUM philosophy
In harmony with nature, the ultimate steam
HUUM heaters are designed with inspiration from Estonia's traditional sauna culture. Even, soft steam warms you to the core for a premium sauna experience.
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