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HUUM STEEL 4 Mini — Wall-Mounted Electric Sauna Heater (3.5kW)
HUUM STEEL 4 Mini — Wall-Mounted Electric Sauna Heater (3.5kW)
HUUM STEEL 4 Mini — Wall-Mounted Electric Sauna Heater (3.5kW)
HUUM STEEL 4 Mini — Wall-Mounted Electric Sauna Heater (3.5kW)
HUUM STEEL 4 Mini — Wall-Mounted Electric Sauna Heater (3.5kW)
HUUM

HUUM STEEL 4 Mini — Wall-Mounted Electric Sauna Heater (3.5kW)

Sale price$1,576.00
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HUUM STEEL 4 Mini — Wall-Mounted Electric Sauna Heater (3.5kW)
HUUM STEEL 4 Mini — Wall-Mounted Electric Sauna Heater (3.5kW) Sale price$1,576.00
Specifications
Specification Value
Brand HUUM
Model STEEL 4 Mini
Part Number H1007012
Kilowatt Rating (kW) 3.5 kW
Primary Fuel Electric
Minimum Adjusted Cubic Feet 106 CF
Maximum Adjusted Cubic Feet 177 CF
Heater Weight 32 lbs
Shipping Weight w/ Stones 165 lbs
Voltage / Phase 240V, Single Phase
Amperage 14.58 Amps
Width 12.6" (320 mm)
Depth 6" (150 mm)
Height 38.4" (975 mm)
Stone Capacity 133 lbs — Requires 4 Boxes
Safety Distance Ultra-small clearances for compact rooms
Construction Stainless Steel
Heating Elements Industrial-Grade Stainless Steel
Heater Type Wall-Mounted
Certifications European Safety Compliant
Country of Origin Estonia
Warranty 3-Year Residential / 1-Year Commercial (Excl. Elements)


Description

The HUUM STEEL 4 Mini 3.5kW Sauna Heater is a compact, wall-mounted electric heater engineered specifically for small sauna rooms where space is limited but performance cannot be compromised. Designed for sauna spaces between 106 and 177 cubic feet, this elegant and efficient heater delivers an impressive heat output while requiring exceptionally small safety clearances.

Thanks to its intelligent airflow system and vertical column design, the STEEL Mini heats up up to 25% faster than comparable small heaters. Its surprisingly large 133-pound stone capacity produces soft, balanced steam and stabilizes heat for a more consistent temperature profile.

Built from premium stainless steel and compatible with all HUUM UKU Control Systems, the STEEL Mini offers modern functionality, including optional Wi-Fi remote operation and designer panel finishes. Crafted in Estonia with minimalistic Nordic aesthetics, this space-saving heater enhances both the look and performance of compact sauna installations.

Features

  • Ultra-Slim Wall-Mounted Design: Perfect for small sauna rooms

  • Very Short Safety Distances: Ideal for installations where space is tight

  • Fast Heating Performance: Air duct design speeds heating by up to 25%

  • 133-Lb Stone Capacity: Exceptional for its size; delivers gentle, long-lasting steam

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

  • Compatible with HUUM UKU Controls: Local, Wi-Fi, Glass, Mirror, Gold options

  • Premium Stainless Steel Build: Durable, corrosion resistant, and modern

  • Industrial-Grade Heating Elements: Engineered for reliability and long lifespan

  • Nordic Craftsmanship: Designed and manufactured in Estonia

What’s Included

  • HUUM STEEL 4 Mini 3.5kW Sauna Heater

  • Wall Fastening Bracket

  • Installation & Operation Manual

  • 3-Year Residential Warranty

  • 1-Year Commercial Warranty (Excluding Elements)

Required for Operation (Sold Separately)

  • HUUM UKU Control System — Required to operate the heater

    • UKU Local

    • UKU Wi-Fi

    • UKU Glass

    • UKU Mirror

    • UKU Gold

  • HUUM Stones 12 (4 Boxes Required) — Rounded 1"–2" olivine stones for proper heating and steam performance

Documentation

Manual Links:

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Specifications
Specification Value
Brand HUUM
Model STEEL 4 Mini
Part Number H1007012
Kilowatt Rating (kW) 3.5 kW
Primary Fuel Electric
Minimum Adjusted Cubic Feet 106 CF
Maximum Adjusted Cubic Feet 177 CF
Heater Weight 32 lbs
Shipping Weight w/ Stones 165 lbs
Voltage / Phase 240V, Single Phase
Amperage 14.58 Amps
Width 12.6" (320 mm)
Depth 6" (150 mm)
Height 38.4" (975 mm)
Stone Capacity 133 lbs — Requires 4 Boxes
Safety Distance Ultra-small clearances for compact rooms
Construction Stainless Steel
Heating Elements Industrial-Grade Stainless Steel
Heater Type Wall-Mounted
Certifications European Safety Compliant
Country of Origin Estonia
Warranty 3-Year Residential / 1-Year Commercial (Excl. Elements)


Description

The HUUM STEEL 4 Mini 3.5kW Sauna Heater is a compact, wall-mounted electric heater engineered specifically for small sauna rooms where space is limited but performance cannot be compromised. Designed for sauna spaces between 106 and 177 cubic feet, this elegant and efficient heater delivers an impressive heat output while requiring exceptionally small safety clearances.

Thanks to its intelligent airflow system and vertical column design, the STEEL Mini heats up up to 25% faster than comparable small heaters. Its surprisingly large 133-pound stone capacity produces soft, balanced steam and stabilizes heat for a more consistent temperature profile.

Built from premium stainless steel and compatible with all HUUM UKU Control Systems, the STEEL Mini offers modern functionality, including optional Wi-Fi remote operation and designer panel finishes. Crafted in Estonia with minimalistic Nordic aesthetics, this space-saving heater enhances both the look and performance of compact sauna installations.

Features

  • Ultra-Slim Wall-Mounted Design: Perfect for small sauna rooms

  • Very Short Safety Distances: Ideal for installations where space is tight

  • Fast Heating Performance: Air duct design speeds heating by up to 25%

  • 133-Lb Stone Capacity: Exceptional for its size; delivers gentle, long-lasting steam

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

  • Compatible with HUUM UKU Controls: Local, Wi-Fi, Glass, Mirror, Gold options

  • Premium Stainless Steel Build: Durable, corrosion resistant, and modern

  • Industrial-Grade Heating Elements: Engineered for reliability and long lifespan

  • Nordic Craftsmanship: Designed and manufactured in Estonia

What’s Included

  • HUUM STEEL 4 Mini 3.5kW Sauna Heater

  • Wall Fastening Bracket

  • Installation & Operation Manual

  • 3-Year Residential Warranty

  • 1-Year Commercial Warranty (Excluding Elements)

Required for Operation (Sold Separately)

  • HUUM UKU Control System — Required to operate the heater

    • UKU Local

    • UKU Wi-Fi

    • UKU Glass

    • UKU Mirror

    • UKU Gold

  • HUUM Stones 12 (4 Boxes Required) — Rounded 1"–2" olivine stones for proper heating and steam performance

Documentation

Manual Links: