HUUM UKU Extension Box for Heaters Over 12 kW
The HUUM UKU Extension Box is an essential accessory designed to seamlessly integrate UKU sauna controls with HUUM sauna heaters exceeding 12kW. This durable, wall-mounted unit ensures reliable performance for larger sauna setups, featuring a sleek light grey finish that complements modern aesthetics. Made in Estonia and SGS listed, it comes with a limited 5-year warranty (excluding elements). Please note that the UKU control unit is sold separately and is required to operate this extension box.
$773.00
Owner Satisfaction
4.4
/ 5
Category Rank
129
/ 182
#129 in Sauna Accessories
Price vs Category Average
+77%
Above average
Who it's for
- High-Power Compatibility
- Enhanced Electrical Safety
- Seamless System Integration
Who should skip it
- Increased System Cost
- Added Installation Complexity
- Bulky Physical Footprint
Key Specs
Required for HUUM heaters over 12kW using UKU control
Voltage
240V
Circuit Breaker Amperage
2 x 63A (Total 126A)
Dimensions (W x D x H)
7" x 4" x 10" (178mm x 101mm x 254mm)
Weight
3.25 lbs (1.47 kg)
Finish
Light grey
Warranty
5-Year Limited (excluding elements)
Certification
SGS listed
Features
- Extends UKU control compatibility for heaters over 12kW
- Durable, wall-mounted design
- Sleek light grey finish
- SGS certified for quality assurance
- Designed and manufactured in Estonia
- Essential for managing high-power sauna heaters
- Includes installation manual and warranty
What customers say
Customers view the HUUM UKU Extension Box as a necessary, high-quality component essential for safely managing the electrical load of heaters over 12 kW. The robust build quality and seamless integration with the UKU control panel earn frequent praise, providing peace of mind for high-output sauna systems. While the product maintains the sleek HUUM aesthetic, the primary friction point is value. Many users feel the cost is high for a mandatory accessory required for powerful installations. Despite these reservations about the price, the consensus confirms the extension box is indispensable for achieving a safe, reliable, high-performance sauna experience above the 12 kW threshold.
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$773