HUUM STEEL 9 kW Electric Sauna Heater- Complete Package Options

Designed for Comfort and Wellness

What sets HUUM apart is its dedication to providing a sauna experience that enhances both physical and mental wellness. The heater’s design maximizes the release of beneficial negative ions, promoting relaxation and a sense of calm. With its superior ability to regulate heat and humidity levels, this sauna heater allows you to enjoy soothing, rejuvenating steam that wraps your body in warmth without feeling too harsh or overwhelming. Additionally, HUUM’s simple, smart control system offers both local and WiFi-enabled options, giving you the flexibility to adjust settings and schedule sessions remotely, ensuring a perfectly tailored sauna experience at your convenience.

Powerful Performance HUUM STEEL: Compact Design,

The STEEL electric sauna heater has been specifically designed for modern home saunas with limited space. Its compact size and powerful performance make it a stylish addition to any interior. The heater is compatible with the UKU sauna control system, allowing you to adjust the sauna temperature remotely. Featuring an optimized structure, the heater offers minimal safety distances and an internal air tunnel that improves airflow and speeds up heating by 25%. The large stone capacity of up to 330 lbs ensures prolonged, mild steam, while the wall-mounted STEEL Mini accommodates up to 132 lbs of stones.

• 9.0kW Sauna Heater
• Installation and Operation Manual
• 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

• Dimensions: 12.6″ W (320mm) x 12.6″ W (320mm) x 38.4″ H (975mm)
• Limited 3-year warranty (excluding elements)
• Construction material: Stainless steel
• Dimensions: 13.25″ W (336.5mm) x 13.25″ W (336.5mm) x 38.25″ H (971.5mm)
• Weight: 33 lbs (14.96kg)
• Length / Width: 13.25″ (336.5mm)
• Width / Depth: 13.25″ (336.5mm)
• Height: 38.25″ (971.5mm)
• UKU Control, 331 lbs stones (Qty 10 x 33 lbs of 1″ – 2″ (3-5 cm) stones boxes)
• Package contents: 9.0kW sauna heater
  Installation and operation manual

Plan your HUUM STEEL installation with helpful manufacturer resources, including heater manuals, UKU control documentation, main module instructions, wiring diagrams, specification sheets, and installation videos.

Before installation, we recommend sharing these resources with your licensed electrician and sauna installer so they can review heater placement, electrical requirements, control setup, stone loading, safety clearances, and installation requirements in advance.

Always follow the official HUUM installation manuals, local electrical code, and guidance from your licensed electrician. NW Immersion is also here to help with heater sizing, package selection, and general installation planning before your order ships.

Click Here for the HUUM Steel Installation & Owner's Manual

HUUM Steel Spec Diagram

HUUM Stone Requirements

Elements Required

Huum warranty

Size Your Sauna

Click Here for the HUUM UKU Control Installation & Owner's Manual

Click Here for Video on Installing the UKU Main Module

Click Here for Video on the UKU Control Installation

Click Here for Video on how to connect the UKU Control to WiFi

• Free Shipping: This order qualifies for free shipping within the contiguous United States.
• Processing Time: In-stock items typically leave the warehouse within 1–3 business days. This is the processing period before transit, not the final delivery time.
• Confirm Availability: Inventory can change quickly. Please call, text, or email NW Immersion before ordering if you need confirmation of current stock or have a specific delivery deadline.
• Multiple Packages: The heater, sauna stones, controls, and accessories may ship in separate boxes or on separate pallets. Packages may arrive on different days.
• Tracking: Tracking information will be emailed for each shipment as soon as it leaves the warehouse.
• Inspect Upon Arrival: Check every package for visible damage before accepting delivery. Photograph any damage and contact NW Immersion promptly so we can assist.

Questions about availability, delivery, heater sizing, controls, or installation requirements? Our U.S.-based sauna specialists are available by phone, text, or email.

Click Here for the HUUM Manufacturer Warranty

HUUM Manufacturer Warranty

Backed by HUUM’s manufacturer warranty when installed and used according to HUUM’s official instructions.

Warranty coverage may vary by component, installation type, use environment, maintenance, chimney connection, and fuel use. Sauna stones, chimney components, and accessories may each carry their own warranty terms.

As an Authorized HUUM Dealer, NW Immersion is here to help with stove sizing, product selection, delivery coordination, troubleshooting, warranty guidance, and long-term support.

Always refer to the official HUUM warranty documentation included with your stove for complete terms and final coverage details.