Know What You're Buying
Full specifications, what's in the box, and everything you need to plan your install.
The HUUM HIVE 18kW sauna heater provides modern elegance for larger saunas like those in health clubs, spas, and gyms. This floor-mounted heater is engineered to hold 528 lbs of stones for unmatched efficiency and performance in sauna rooms up to 1,236 cubic feet (CF).
Precision-engineered and crafted in Estonia for a true European sauna experience.
- Elegant design
- Suitable for commercial use
- 240V/1PH operation
- For sauna rooms from 636 to 1236 cu. ft.
- Works with UKU controls (sold separately)
- Works with UKU extension box (sold separately)
- Large 528 pound stone capacity ( required 16 boxes sold separately )
- Direct contact between stones and heating elements
- More exposed stones create a longer and milder heat
- Stainless steel construction
- Stainless steel, industrial-quality heating elements
- Floor model with adjustable legs
- Air tunnel shortens heat-up time and increases life of heating elements
- Designed, engineered, and made in Estonia
- Dimensions: 22"Diameter (560mm) x 29.5"H (750mm)
- SGS listed
- Limited 5-year warranty (excluding elements)
- • 18.0kW Sauna Heater
- • Adjustable Legs
- • Pre-Installed HIVE Air Tunnel
- • Installation and Operation Manual
- • 5-Year Limited Warranty (excluding elements)
| Model | Model | HIVE 18 |
| Kilowatt Rating | Kilowatt Rating | 18.0kW |
| Minimum Cubic Feet | Minimum Cubic Feet | 636 |
| Maximum Cubic Feet | Maximum Cubic Feet | 1236 |
| Heater Weight | Heater Weight | 53.5 lbs |
| Shipping Weight with Sauna Stones | Shipping Weight with Sauna Stones | 581.5 lbs |
| 240V, Single-Phase Amperage | 240V, Single-Phase Amperage | 75 |
| Circuit Breaker | Circuit Breaker | 50 + 50 |
| Wire Size AWG | Wire Size AWG | 8 + 8 |
| Diameter | Diameter | 22" (560mm) |
| Height | Height | 29.5" (750mm) |
| Shipping | Shipping | Curbside delivery by appointment, palletized |
Documentation for this product is available on request — contact us and we will send it over.
Frequently Asked Questions
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Warranty coverage varies by manufacturer and product. Please refer to the product page or included documentation for specific details. Warranties are provided by the manufacturer. We're happy to help connect you with the manufacturer if you have a warranty question.
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Exchanges are handled on a case-by-case basis. Contact us at info@betterbackyardstore.com with your order number and the item you'd like instead. If approved, you may be responsible for price differences, return shipping, and any applicable restocking fees.