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 353 to 600 cubic feet. Thanks to its optimized structure, the heater requires only 9.45 inches of clearance from surrounding walls, making it an excellent choice for saunas with limited space.

With a 165-pound stone capacity, the Cliff 9 produces 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.

Built in Estonia, the HUUM Cliff series combines modern design, energy efficiency, and durability. 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 small safety distances (9.45")

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

• Free-standing floor installation

Performance

• Power: 9.0 kW

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

• Wet and dry sauna compatible

• Internal air duct design for faster heating (up to 25% quicker)

Controls

• Requires HUUM UKU control unit (sold separately)

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

• Control 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

• 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 enhance steam softness and suit the heater’s design

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

Package Contents

• HUUM Cliff 9 kW sauna heater

• Installation and operation manual

Specifications

• Model: CLIFF 9.0

• Power: 9.0 kW

• Sauna size: 353 – 600 cu. ft.

• Heater weight: 37.5 lbs

• Shipping weight with stones: 202.5 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