The HUUM STEEL Mini 4 Electric Sauna Heater delivers powerful performance in a compact, modern design—perfect for small home saunas or limited spaces. Its slim, vertical form allows for easy wall mounting while maintaining short safety distances, maximizing usable space inside the sauna.

Crafted with precision, the STEEL Mini 4 holds up to 60 kg (132 lb) of sauna stones, ensuring consistent and even heat distribution. An integrated air tunnel promotes faster heating and improved airflow, enhancing the overall efficiency of each session.

Encased in durable stainless steel, the STEEL Mini 4 brings both functionality and contemporary elegance to your sauna.

For added safety and visual harmony, pair the heater with a HUUM safety railing or a custom-built guard.

Note: Control Unit and sauna stones are required for operation and sold separately.

Prefer a complete setup?

→ View package with WiFi control
→ View package with local control

Features

• Slender design
• Suitable for use in small saunas with limited space
• Works with UKU controls (sold separately)
• Control with a mobile app
• 132 lb. stone capacity (required 4 boxes sold separately)
• 240V/1PH operation
• Stainless steel, industrial quality heating elements
• Wall-mount model
• Soft and long-lasting steam
• Designed, engineered, and made in Estonia
• SGS listed
• 3-year residential warranty and 1-year commercial warranty (excluding elements)

Specifications

What's Included 

• 3.5kW electric sauna heater
• Wall fastening bracket
• Installation and operation manual
• 3-year residential warranty and 1-year commercial warranty

Complete Your Setup

The following components are essential for proper installation and operation of this product:

• UKU Sauna Control System
  • HUUM UKU CLASSIC WiFi
  • HUUM UKU CLASSIC Local
  • HUUM UKU GLASS WiFi
• 132 lb of Rounded Olivine Sauna Stones with a Diameter of 3–5 cm / 1–2 in
  
  • HUUM Sauna Stones 12 (4 Boxes)

Manuals & Resources