HUUM STEEL 6 — Slim Electric Sauna Heater (6.0kW)

The HUUM STEEL 6.0kW Sauna Heater combines a modern slim profile with advanced heating performance, making it ideal for compact sauna rooms between 177 and 318 cubic feet. Engineered with HUUM’s signature column design and intelligent airflow system, the STEEL 6 delivers powerful, consistent heat while requiring extremely small safety distances — a perfect solution for saunas with limited space.

Thanks to its well-optimized structure, the STEEL 6 warms up up to 25% faster than traditional heaters while providing exceptional heat retention through its large 331-pound stone capacity. The direct contact between stones and heating elements produces smoother, gentler steam and balanced temperature distribution throughout the room.

Compatible with HUUM’s industry-leading UKU Control Systems, the STEEL 6 offers precise temperature management, optional Wi-Fi app operation, and multiple premium panel finishes to match your sauna décor. Made in Estonia from high-grade stainless steel, this heater merges minimalist design with superior performance.

• Slim, Space-Efficient Design: Ideal for small and mid-size sauna rooms

• Very Small Safety Distances: Only 2–4 inches required depending on installation

• Fast Heat-Up Time: Advanced airflow system speeds heating by up to 25%

• 331-Lb Stone Capacity: Supports mild, long-lasting, radiant steam

• Direct Stone-to-Element Contact: Enhances heat retention and efficiency

• Works with HUUM UKU Controls: Local, Wi-Fi, Glass, Mirror, Gold (sold separately)

• Premium Stainless Steel Construction: Modern, durable, and corrosion resistant

• Industrial Heating Elements: Built for long-term performance

• Floor-Standing Vertical Column Design: Saves space while enhancing airflow

• Crafted in Estonia: High-end European engineering and materials

• HUUM STEEL 6.0kW Sauna Heater

• Installation & Operation Manual

• 3-Year Residential Warranty

• 1-Year Commercial Warranty (Excluding Elements)

Required for Operation (Sold Separately)

• HUUM UKU Control System — Required control to operate the heater

  • UKU Local

  • UKU Wi-Fi

  • UKU Glass

  • UKU Mirror

  • UKU Gold

• HUUM UKU Extension Box — Required for certain control configurations

• HUUM Stones 12 (10 Boxes Required) — Rounded 1"–2" olivine stones for heat retention and steam production

Manual Links:

• HUUM Warranty

• HUUM Steel Spec Sheet

• HUUM Steel IOM Owners Manual

• HUUM Certificate of Compliance

• HUUM Required Elements

• HUUM Stone Requirements

• Sizing Your HUUM