HUUM CLIFF Mini Series 3.5kW Sauna Heater

HUUM CLIFF Mini 3.5kW Sauna Heater

The HUUM CLIFF Mini 3.5kW sauna heater is a compact, wall-mounted solution designed for smaller sauna rooms where space efficiency and safety distances are critical. With its slender vertical profile and extremely short safety clearances, the CLIFF Mini delivers powerful, even heat without compromising layout flexibility.

An internal air duct allows the heater to heat up to 25% faster, while the exposed stone design creates a longer-lasting, milder heat that feels smooth and comfortable. Crafted from stainless steel and engineered for performance, the CLIFF Mini is ideal for modern, space-conscious sauna builds.

Please Note: A UKU control system and sauna stones are required for operation and are sold separately.

Overview

• Compact, wall-mounted sauna heater for small sauna rooms
• Extremely short safety distances for space-saving installations
• Internal air duct heats up to 25% faster
• Exposed stones create a longer, milder heat
• Designed, engineered, and made in Estonia

Key Features

• Slender design ideal for limited spaces
• Small safety clearances
• Removable rib(s) for precise stone stacking
• Direct contact between stones and heating elements
• More exposed stones for smoother heat distribution
• Stainless steel construction
• Industrial-grade stainless steel heating elements
• Compatible with UKU control systems (sold separately)

Sauna Room Size & Stone Capacity

• Recommended Sauna Volume: 123–212 cu. ft.
• Stone Capacity: 133 lbs (requires 4 boxes, sold separately)

Specifications

• Power: 3.5kW
• Installation: Wall-mounted
• Material: Stainless steel
• Dimensions: 10.6" W (270 mm) × 6.3" D (160 mm) × 38.4" H (975 mm)
• Origin: Designed, engineered, and made in Estonia

Warranty

• 3-Year Limited Residential Warranty
• 1-Year Limited Commercial Warranty
• Excludes heating elements

What’s Included

• 3.5kW sauna heater
• 2 prop blocks (for removal of sauna rib slats)
• Installation and operation manual

Required for Operation

• UKU Control System (sold separately)
• 133 lbs of sauna stones (Qty: 4 × 33 lb boxes of 1"–2" / 3–5 cm stones, sold separately)