HUUM CLIFF 6 Sauna Heater – 6.0kW

Elegant & Long-Lasting Steam, Perfect for Smaller Saunas

The HUUM CLIFF is a slim electric sauna heater designed for spaces where every inch matters. With optimized engineering, it achieves impressively small safety distances—just 2.36" (6 cm) for the 6 kW model, making it ideal for compact home saunas.

The CLIFF 6 kW free-standing sauna heater is built for sauna rooms from 212 to 353 cubic feet. With a stone capacity of up to 165 pounds (75 kg), it produces a consistent, soft heat suitable for both wet and dry use. Constructed from stainless steel with industrial-grade heating elements, the CLIFF is both durable and efficient. Its design places the stones directly in contact with the heating elements, ensuring better heat transfer and reliable performance.

Crafted in Estonia, all HUUM sauna heaters come SGS Listed for safety and are backed by a 5-year limited warranty (excluding heating elements). For controls, pair with a HUUM UKU unit—choose from Local, Wi-Fi, or Glass Wi-Fi—for precise and convenient operation.

Key Features

Design and Build

• Slim, space-saving stainless steel construction

• Free-standing model with compact footprint

• Holds up to 165 lbs (75 kg) of stones

• Internal air duct for up to 25% faster heating

Performance

• Power: 6.0 kW

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

• Produces soft, long-lasting heat for wet or dry use

• Direct stone-to-element contact for efficient heating

Controls

• Works with HUUM UKU control units (sold separately)

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

• Functions include: temperature adjustment, timers, and optional remote control via smartphone app

Certification and Warranty

• SGS Listed for quality and safety

• Precision-crafted in Estonia

• Backed by a 5-year limited warranty (excluding elements)

Sauna Stones

• Not included with the heater

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

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

• Avoid decorative stones, as they may crack under heat

Package Contents

• HUUM CLIFF 6 kW sauna heater

• Installation and operation manual

Specifications

• Model: CLIFF 6.0

• Power: 6.0 kW

• Sauna size: 212 – 353 cu. ft.

• Heater weight: 35 lbs

• Shipping weight with stones: 200 lbs

• Voltage: 240V, single-phase

• Amperage: 25A

• Circuit breaker: 30A

• Wire size: 10 AWG

• Dimensions: 10.6"W (270mm) × 10.6"D (270mm) × 38.4"H (975mm)

Model Comparison