HUUM Cliff 9 Sauna Heater – 9.0kW

Elegant & Long-Lasting Steam, Perfect for Smaller Saunas

The HUUM Cliff 9 is a slim, free-standing electric sauna heater designed for sauna rooms from 317 to 529 cubic feet. With safety distances as short as 9.45 inches (24 cm), the Cliff 9 is an excellent choice for saunas with limited space.

This compact unit holds up to 165 pounds of sauna stones, producing a soft, consistent heat for both wet and dry sauna use. Stones are placed in direct contact with the stainless-steel heating elements, ensuring efficient heat transfer and long-lasting steam.

Crafted in Estonia with a minimalist design, the HUUM Cliff 9 combines functionality with aesthetics. Each unit is SGS Listed for safety, fully serviceable, and backed by a 5-year limited warranty (excluding elements).

Key Features

Design and Build

• Slim stainless-steel construction

• Compact footprint with reduced safety distances

• High stone capacity – 165 lbs (75 kg)

• Free-standing installation

Performance

• Power: 9.0 kW

• Sauna size: 317 – 529 cu. ft. (9 – 15 m³)

• Internal air duct system heats 25% faster

• Wet or dry sauna compatible

Controls

• Requires HUUM UKU control unit (sold separately)

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

• Manage temperature, timers, steam, and lighting

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

Certification and Warranty

• SGS Listed for quality and safety

• Precision-crafted in Estonia

• HUUM 5-year limited warranty (excluding elements)

Sauna Stones

• Stones are not included

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

• Rounded stones complement the heater design and provide softer steam

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

Package Contents

• HUUM Cliff 9.0 kW sauna heater

• Installation and operation manual

Specifications

• Model: CLIFF 9.0

• Power: 9.0 kW

• Sauna size: 317 – 529 cu. ft.

• Heater weight: 35 lbs

• Shipping weight with stones: 200 lbs

• Voltage: 240V, single-phase

• Amperage: 37.5A

• Circuit breaker: 50A

• Wire size: 8 AWG

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

• Safety distances: A = 9.45", B = 29.5"

Model Comparison