HUUM Steel 6 Sauna Heater – 6.0kW

Elegant & Long-Lasting Steam, Perfect for Smaller Saunas

The HUUM Steel 6 is a slim, free-standing electric sauna heater designed for sauna rooms from 212 to 353 cubic feet. With its optimized structure, the heater requires remarkably small safety distances—just 2 inches from surrounding walls—making it the ideal choice for compact sauna spaces.

With a 331-pound stone capacity, this model delivers a soft, consistent heat and long-lasting steam. The stones are placed directly against the stainless-steel heating elements for maximum efficiency and can be used for both wet and dry sauna sessions.

Built from durable stainless steel, the Steel 6 combines minimalist design with professional-grade performance. Crafted in Estonia, HUUM Steel heaters are SGS Listed for safety and backed by a 5-year limited warranty (excluding elements).

Key Features

Design and Build

• Slim, compact stainless-steel construction

• Exceptionally small safety distances (2 inches)

• Large stone capacity: 331 lbs (150 kg)

• Free-standing floor installation

Performance

• Power: 6.0 kW

• Sauna size: 212 – 353 cu. ft. (6 – 10 m³)

• Suitable for wet or dry sauna use

• Heats up to 25% faster thanks to internal air duct design

Controls

• Requires HUUM UKU control unit (sold separately)

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

• Manage temperature, steam, timers, and lighting

• Wi-Fi options enable remote access via HUUM mobile app

Certification and Warranty

• SGS Listed for safety and quality

• Precision engineered in Estonia

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

Sauna Stones

• Stones are not included with the heater

• Recommended: rounded olivine diabase stones (3–5 cm)

• Rounded stones provide milder steam and complement the heater’s design

• Decorative stones are not recommended as they may crack under heat

Package Contents

• HUUM Steel 6 kW sauna heater

• Installation and operation manual

Specifications

• Model: STEEL 6.0

• Power: 6.0 kW

• Sauna size: 212 – 353 cu. ft.

• Heater weight: 33 lbs

• Shipping weight with stones: 364 lbs

• Voltage: 240V, single-phase

• Amperage: 25A

• Circuit breaker: 30A

• Wire size: 10 AWG

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

• Safety distances: A = 2", B = 16.5"

Model Comparison