HUUM STEEL 10.5 Sauna Heater – 10.5kW

Elegant & Long-Lasting Steam, Perfect for Smaller Saunas

The HUUM STEEL is a slim electric sauna heater designed for modern spaces where efficiency and compactness matter. With remarkably small safety distances—down to just 5 cm on smaller models and 10 cm on larger ones—the STEEL is the ideal solution for saunas with limited room.

The HUUM STEEL 10.5 kW is a free-standing electric sauna heater built for sauna rooms between 353 and 600 cubic feet. Its large 331-pound stone capacity ensures a long-lasting, soft, and consistent heat for both wet and dry sauna experiences. Crafted from durable stainless steel with industrial-grade heating elements, the STEEL combines minimalist design with reliable performance.

Key Features

Design and Build

• Slim and space-saving design with reduced safety distances

• Stainless steel housing and industrial-grade heating elements

• Free-standing structure for flexible placement

• 331 lb (150 kg) stone capacity for softer steam

Performance

• Power rating: 10.5 kW

• Sauna size range: 353 – 600 cu. ft. (10 – 17 m³)

• Internal air duct enables up to 25% faster heating

• Stones in direct contact with heating elements for efficient heat transfer

Controls

• Works with HUUM UKU control units (sold separately)

• Options: UKU Local, UKU Wi-Fi, UKU Glass Wi-Fi

• Functions include: temperature setting, timers, lighting integration, and delayed start

• Wi-Fi controls allow remote operation via the HUUM mobile app

Certification and Warranty

• SGS Listed for safety and reliability

• Precision-crafted in Estonia

• Backed by HUUM’s limited 5-year warranty (excluding heating elements)

Sauna Stones

• Stones are not included

• Recommended: rounded olivine diabase stones, 3–5 cm

• Rounded stones produce gentler steam and complement the STEEL’s design

• Do not use decorative stones, as they may crack under heat

Package Contents

• HUUM STEEL 10.5 electric sauna heater

• Installation and operation manual

Specifications

• Model: STEEL 10.5

• Power: 10.5 kW

• Sauna size: 353 – 600 cu. ft.

• Heater weight: 35 lbs

• Shipping weight with stones: 366 lbs

• Voltage: 240V, single-phase

• Amperage: 43.75A

• Circuit breaker: 50A

• Wire size: 6 AWG

• Dimensions: 12.6"W (320mm) × 12.6"D (320mm) × 38.4"H (975mm)

Model Comparison