HUUM STEEL 9 (9 kW) Electric Sauna Heater

Optimize your sauna experience with the HUUM STEEL 9, a high-performance electric heater designed for medium-sized sauna rooms where floor space is a premium. This slim, sculptural heater combines modern Nordic aesthetics with precision engineering, allowing for remarkably small safety distances to walls. Perfect for custom-built residential or light commercial saunas, the STEEL 9 ensures a luxurious, soft steam (Loyly) experience characteristic of a premium Estonian spa.

Despite its slender profile, the STEEL 9 features a high stone capacity and a unique internal air duct structure that allows it to heat 25% faster than comparable heaters in its class.

Slim & Space-Saving Design

The STEEL series is engineered for installations where maximizing interior space is a priority. Its well-optimized structure allows for an industry-leading safety distance of just 4 inches from combustible walls. This makes it an ideal choice for compact larger sauna rooms where traditional floor-mounted heaters would be too bulky or require excessive clearance.

Superior Heating & Steam

The HUUM STEEL 9 is built with an integrated internal air duct that optimizes airflow, significantly reducing heat-up times and ensuring an even thermal climate throughout the room. With a massive stone capacity of 331 lbs (150 kg), the heater provides exceptional heat retention and steam production. When water is poured over the stones, the STEEL 9 generates the soft, consistent steam that is essential for an authentic Finnish or Estonian sauna session.

Durable Stainless Steel Craftsmanship

Each HUUM heater is precision-crafted in Estonia using high-grade stainless steel for maximum durability and corrosion resistance. The sculptural, vertically-oriented cage design is not just a visual statement; it is a functional choice that exposes a massive surface area of the stones to the air for efficient heat radiation.

Easy Operation & Smart Integration

Designed for the modern home, the STEEL 9 (9 kW) operates on a standard 240V 1-phase connection (50 amp). It is designed to be paired with an external control system, such as the HUUM UKU series, which allows for precise temperature management and, with the Wi-Fi option, the ability to preheat your sauna directly from your smartphone.

Features

• Slim & Vertical Profile: Optimized for saunas with limited floor space.

• Rapid Heating: Integrated air duct ensures 25% faster heat-up times.

• Small Safety Clearances: Can be installed just 4" from combustible walls.

• High Stone Capacity: Holds 331 lbs of stones for superior heat retention and steam.

• Premium Stainless Steel: Durable and rust-resistant Estonian craftsmanship.

• Modern Aesthetic: Minimalist cage design provides a sculptural centerpiece.

• Smart Control Compatible: Designed for use with HUUM UKU local or Wi-Fi controllers.

Specifications

• Power Output: 9 kW.

• Sauna Room Size: 283 – 460 cubic feet (8 – 13 m³).

• Stone Capacity: 331 lbs (150 kg).

• Dimensions: 12.6" W x 12.6" D x 38.4" H.

• Electrical: 240V, 1-phase, 37.5 Amps (50 amp breaker, 8 AWG wire).

• Weight: 15 kg (Approx. 33 lbs) without stones.

• Warranty: Manufacturer's limited warranty included.

Recommended Accessories

• Rounded Stones: HUUM recommends rounded olivine diabase stones for optimal airflow.

• STEEL Safety Railing: Protects bathers from accidental contact with the heater.

• STEEL Reflector: Can be used to further reduce safety distances to walls.

• Embedding Flange: Allows for a clean finish if partially installing the heater into sauna benches.