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Description
HUUM UKU Extension Box for Heaters 12 kW & UpHUUM UKU Extension Box for Heaters 12 kW & Up For use with HUUM UKU Controllers, the HUUM Extension Box is required for all HUUM sauna heaters 12kW and larger. Specifications Wall mounted Dimensions: 7"W (177. 8mm) x 7"D (177. 8mm) x 6"H (152. 4mm) Volts: 240 Amps: 2x63 Package Includes: Extension box Installation and operation manual 5 Year Limited Warranty Warranty HUUM LIMITED 5 YEAR WARRANTY General: The purchaser is obliged to review the user
HUUM UKU Extension Box for Heaters 12 kW & Up
For use with HUUM UKU Controllers, the HUUM Extension Box is required for all HUUM sauna heaters 12kW and larger.
Specifications
- Wall mounted
- Dimensions: 7"W (177.8mm) x 7"D (177.8mm) x 6"H (152.4mm)
- Volts: 240
- Amps: 2x63
Package Includes:
- Extension box
- Installation and operation manual
- 5-Year Limited Warranty
Warranty
HUUM LIMITED 5-YEAR WARRANTY
General:
The purchaser is obliged to review the user manual of the product and follow the requirements stated therein. The warranty does not extend to failures due to non-compliance with the rules of use provided for in the manual. The warranty is valid, if the product has a technical defect or fault caused by the manufacturer.
- The warranty covers the replacement of the product or of parts with manufacturing defects.
- The warranty period is 5 years from the date of purchase.
- NOTICE: The warranty is based on the presentation of the purchase receipt/invoice. The right to submit a claim is valid on the condition that the product has been used only for the intended purpose and conditions.
Warranty terms:
- NOTICE: The warranty does not extend to heating elements of the electric heaters, these are considered expendable parts.
- The warranty does not cover the defects caused by normal wear and tear of the product.
- The warranty does not apply to heater stones.
Warranty does not cover the defects which are caused by:
- Transport and other accidental damage to the product;
- Careless or improper storage and use of the product and overloading;
- Failure to comply with the instructions for installation and operation of the product and safety requirements.
Warranty does not apply:
- If the product has been repaired by an unauthorized person, if non-approved parts have been added to the product, or if consumables not accepted by the manufacturer have been used (e.g. heating elements);
- If the set of product is not complete.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 2
Ehh
Pills up rather quickly
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Reviewed in the United States on June 7, 2026
★★★★★ 3
Nice but dissapointing
So it sometimes stays cool but if it’s under a blanket and you have your body on it at all it will get warm but the spots you don’t use will get cool sometimes. I am very disappointed in the material though because it’s like my dry skin scratched the pillow case all over which makes me question it and I don’t think I would buy again.
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Reviewed in the United States on December 15, 2025
★★★★★ 5
Great pillow, but the cooling effect depends on the cover
Color: Blue-ice Plus, Size: King(Pack of 2)
I really like this pillow overall. It’s comfortable, supportive, and feels well made. When you use it without a pillowcase, it definitely feels cool to the touch and does what it claims in terms of that initial cooling sensation.
However, once you put a pillowcase on it, you can’t really feel the cooling effect anymore. I’ve tried multiple different pillowcases made from different materials, and none of them really let that cool feeling come through.
That said, I still love the pillow itself. It’s comfortable and supportive enough that I’m keeping it. Just keep in mind that the cooling feature works best without a cover, which isn’t ideal for everyone.
Overall, a good pillow — just manage expectations about the cooling effect once it’s covered.
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Cooling and holds shape.
Color: Blue-ice Plus, Size: Queen(Pack of 2), Color: Blue-ice Plus, Size: Queen(Pack of 2)
Very nice pillow for the price is also holding up well and holding shape very cool and comfortable to the touch. Best pillow I found in a long time.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Best Pillow Ever
Color: Blue-ice Plus, Size: Queen(Pack of 2)
Best pillow ever. Although it still gets "hot", it does take longer to get "hot". I love this pillow. I was buying a new pillow almost every 3 months. Other pillows would either remain rock hard or go flat. I was concerned at first when reading the description as I though the memory foam would be big pieces. They are soft fluffy pieces. I had to remove almost half of the foam to get the pillow to what works for me. I have not had to put any filler back in. Maybe in a couple of more months I may have to put a bit more in, but it is holding it's shape and not going flat. I do fluff it every night. This helps. I am a stomach sleeper. I have bought the expensive purple pillow and hated it so much I gave it to my daughter. This QUTOOL Pillow is the best! I bought a 2 pack. Have not used the other pillow yet, but I feel I may actually go years for once without having to buy a pillow as I have the 2nd one set aside if the first one gets to a point in need replacement. I have bought Dollar Store pillows. I have bought $300 pillows. None of them even come close to this pillow and the way you can adjust this pillow for you. The pillows came in a white mesh like bag. I keep all the unused "stuffing" in this bag. I have it hanging in my closet and I just fluff the bag once a month to keep the filling fresh so it is ready if and when I need it. Coming from someone who has trouble staying asleep, neck issues, a stomach sleeper who hate those flat pillows manufacturers think stomach sleepers like but actually hate, buy this pillow. Just buy it. Best Pillow for a picky person like me. Buy 2 or more so if you have to stay at a hotel, you can take your own pillow.
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Reviewed in the United States on June 15, 2025