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Electric Sauna Heaters  ▸  Accessories  ▸  Heater Control Units  ▸  HUUM  ▸  HUUM UKU Power Extension Box

HUUM UKU Sauna Control Unit Extension Box (Required for HUUM Heaters 12.0kW and Up)
HUUM UKU Sauna Control Unit Extension Box (Required for HUUM Heaters 12.0kW and Up)

HUUM UKU Sauna Control Unit Extension Box (Required for HUUM Heaters 12.0kW and Up)

SKU: H2003012 by HUUM

  • Sleek wall-mount design
  • Protected by a 3-year warranty (residential use)
MLK JR. DAY SALE: 20% OFF MLK JR. DAY SALE: 20% OFF
$967
$967 - $967
$967
$773
$773 - $773
$773

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The main module can control up to 9kW heaters, for full range electrical heaters extension box is needed.

ModelUKU Ext Box
Voltage240
Circuit Breaker Amperage2 x 63
Weight3.25 lbs
Width7" (178mm)
Depth4" (101mm)
Height10" (254mm)

Owner's Manual - view / download

Warranty - view / download

Excellent Rating

4.8 / 5
Based on 46 reviews
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  • Highly Recommend This Company
    The team at Soaknsweat was absolutely incredible. I honestly didn’t think customer service like this still existed. Kris and the...
    Tessa Jones Verified
  • Building Phase
    I’m currently in the process of designing and building a sauna. After a lot of online research and frustration, I discovered Soak 'n Sweat...
    Amy Orton Verified
  • All my questions answered
    I had a question and reached out through the Soak 'n Sweat website chat — and within moments, a real person responded...
    Andrew B Verified
  • Smooth transaction
    This was my first time building a sauna, and I had tons of questions. Kris patiently guided me through everything — from...
    Sauna BOYZZZ Verified
  • Great service and support
    The response time was excellent, and every question we had was answered quickly. Their technical support was also outstanding. I’d...
    Angela Wilson Verified
  • Fast Response Time
    Responses to my questions were fast, clear, and genuinely helpful. The customer service from Soak 'n Sweat was outstanding...
    Barbara Verified
  • Incredible service
    Customer service was incredible! I reached out through chat and got help right away. The ordering and payment process was...
    Bobby b Verified
  • GREAT team of experts
    Everything from start to finish was excellent. We purchased the Harvia Spirit 8kW with the Xenio CX45 control unit, and we couldn’t...
    Charles Hayes Verified
  • Quick to respond
    They were always quick to respond and answered all my questions right away. Excellent customer service from...
    Christopher Garcia Verified
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