HUUM CLIFF Electric Sauna Heater 6 kW

Price:

$2,470.00

The HUUM Steel is an advanced, larger version of the Steel Mini, designed to deliver exceptional heating performance in medium-sized saunas. Available in 6 kW, 9 kW, and 10.5 kW models, this heater upholds HUUM’s hallmark of high stone capacity and efficient heat distribution — offering both beauty and power in a sleek, space-saving design.

With the ability to hold up to 10 boxes of stones (approx. 150 kg / 330 lb), the HUUM Steel ensures long-lasting heat and rich steam production, thanks to its extensive thermal mass. Its slim, rectangular shape and minimal safety distance requirements make it perfect for saunas where space is limited, while its clean, modern look complements contemporary interiors.

Key Feature: Integrated Air Tunnel

A standout innovation of the HUUM Steel is its integrated air tunnel system, which fully covers and protects the heating elements while improving airflow.
This design enhances efficiency by reducing heat-up time and extending the lifespan of the elements. The Steel and Cliff models are the only heaters in the HUUM lineup featuring this advanced air tunnel technology — setting them apart in both performance and durability.

Performance and Experience

Like all HUUM heaters, the Steel model blends modern aesthetics with functional excellence.
It supports WiFi control via the UKU system, allowing you to manage temperature, schedule heating, and enjoy your sauna experience remotely.
With a maximum temperature of 110°C and a large stone capacity, the HUUM Steel provides gentle, even heat and consistent steam — ensuring an authentic and luxurious sauna atmosphere.

Heater Includes

  • Adjustable legs (raise the heater up to 7 cm)

Additional Requirements

  • UKU sauna control system

  • 150 kg (330 lb) of sauna stones (diameter: 3–5 cm / 1.2–2 in)

Specifications

  • Sauna room size: 8–13 m³ (283–460 ft³)

  • Stone capacity: 150 kg (330 lb)

  • Weight: 15 kg (33 lb)

  • Height: 975 mm (38.4 in)

  • Width: 320 mm (12.6 in)

  • Depth: 320 mm (12.6 in)

  • Safety distances: See drawing tab below

Disclaimer: Sauna Depot is not responsible for any electrical work. Installation must be completed by a licensed electrician in accordance with local electrical codes and the manufacturer’s installation manual.

Build Price
  • Choose heater control

    The local and Wi-Fi sauna controls are essentially the same in terms of hardware and functionality. The key difference is that the Wi-Fi version includes an ID for connecting to the HUUM mobile app (Apple or Google Play). This feature allows you to remotely activate your sauna, enabling you to heat it up in advance, whether you're on your way home or just finishing a workout. It's designed to enhance convenience, ensuring your sauna is ready when you are.

    UKU Local Control

    UKU Wi-Fi Control

    Choose stones
    Choose Safety Railing
    Hive Reflector

    Depending on the required clearance of the heater, it may be necessary to use two Hive reflectors.

    Choose Embedding Flange

    Depending on the required clearance of the heater, it may be necessary to use two Hive reflectors.

    Choose Protective Bedding

    Depending on the required clearance of the heater, it may be necessary to use two Hive reflectors.

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