HUUM STEEL Mini 3.5kW Electric Sauna Heater(123-212cf)

240V 1PH / 123 to 212 cubic feet

$1,576.00

HUUM STEEL Mini 3.5kW Electric Sauna Heater(123-212cf)

$1,576.00

Shipping calculated at checkout.

Important Notice Regarding HUUM Product Support

Please be aware that we are no longer able or authorized to handle HUUM parts and warranty claims. All parts, components, and support inquiries must be directed to HUUM Sauna in Estonia. Any warranty items must be approved by HUUM Estonia directly, please contact our sales team for alternative heater recommendations.

For assistance, please visit huum.eu or contact HUUM Sauna directly at support@huum.eu.

HUUM STEEL Mini Electric Sauna Heater – 3.5 kW

Modern style meets compact performance with the HUUM STEEL Mini. This wall-mounted electric sauna heater brings a powerful and efficient heating experience to small sauna rooms, all while showcasing HUUM’s signature minimalist design. Made in Estonia with high-quality stainless steel and thoughtful engineering, the STEEL Mini delivers luxurious, long-lasting steam in spaces where every inch counts.

Engineered for Small Saunas, Built to Impress

Perfect for home or apartment saunas ranging from 123 to 212 cubic feet (3.5 to 6 m³), the STEEL Mini features extremely short safety distances, making it ideal for tight spaces. Despite its sleek design, it holds up to 132.3 lbs (60 kg) of sauna stones—far more than other heaters of the same power rating—delivering mild, consistent heat and rich löyly (steam).

Faster Heat, Cleaner Design

Thanks to an integrated air tunnel system, this compact heater heats the sauna up to 25% faster while extending the life of its heating elements. Its exposed stone surface and direct contact with heating elements ensure better steam generation and a gentler, more pleasant sauna experience. The polished stainless steel body also makes it a stunning addition to any sauna interior.

Smart Sauna Controls

The STEEL Mini is compatible with the HUUM UKU control system (sold separately), allowing you to control your sauna via a wall-mounted unit or remotely with the HUUM mobile app. Whether you’re at home or on the go, you can preheat your sauna to the perfect temperature with ease.

Key Features

Designed for sauna rooms from 123 to 212 cu. ft. (3.5 to 6 m³)
Wall-mounted design for space efficiency
Extremely short safety distances (ideal for small saunas)
Heats up to 25% faster with internal air tunnel
Large 132.3 lb (60 kg) stone capacity for soft, lasting steam
Direct contact between stones and heating elements
Durable stainless steel body and industrial-grade heating elements
Contemporary, minimalist design
Compatible with HUUM UKU controls and mobile app
Made in Estonia
5-Year Limited Warranty (excluding heating elements)

Technical Specifications

Specification	208V Model	240V Model
Power Rating	2.85 kW	3.5 kW
Recommended Sauna Size	106 – 159 ft³ (3 – 4.5 m³)	106 – 177 ft³ (3 – 5 m³)
Stone Capacity	132.3 lbs (60 kg)
Heater Weight	31.9 lbs (14.5 kg)
Dimensions (W x D x H)	12.2" x 6.3" x 38.4" (310mm x 160mm x 975mm)
Installation Type	Wall-Mounted
Material	Stainless Steel
Control System	Compatible with HUUM UKU (Wi-Fi, Local, or Glass)
Warranty	5-Year Limited (Excludes Heating Elements)

In the Box

The HUUM STEEL Mini sauna heater comes with the heater body and mounting hardware. Control unit and sauna stones (4 boxes recommended) are sold separately.

Why Choose HUUM STEEL Mini?

If you’re looking for a sauna heater that blends powerful performance with elegant design, the HUUM STEEL Mini is a top-tier choice. With faster heating, sleek aesthetics, and industry-leading rock capacity, it's the perfect solution for compact modern saunas.

Safety Distances

A 2 in
B. 16.1 in