The HUUM HIVE 18kW Electric Sauna Heater brings professional spa-level performance to your sauna. Designed for large residential or commercial spaces, it offers a massive 528 lb. stone capacity and an impressive 18.0kW output, providing soft, consistent heat for sauna rooms sized 636–1236 cu. ft.. Built in Estonia from premium stainless steel and engineered with superior airflow, the HIVE 18 is ideal for those who demand both power and elegance in their sauna experience.
Key Features
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18.0kW heating capacity – perfect for larger saunas up to 1236 cu. ft.
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528 lb. stone capacity (≈16 boxes, sold separately) for long-lasting, radiant heat
- Direct element-to-stone contact ensures softer, milder steam
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Air tunnel system reduces heat-up time and extends heating element lifespan
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Elegant stainless steel construction with industrial-grade heating elements
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Floor-standing design with adjustable legs for easy installation
- Compatible with HUUM UKU Controls & UKU extension box (sold separately)
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SGS safety listed for peace of mind
- Designed, engineered, and manufactured in Estonia
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5-Year Limited Warranty (excluding heating elements)
What’s Included
- HUUM HIVE 18kW Electric Sauna Heater
- Pre-installed HIVE Air Tunnel
- Adjustable legs
- Installation & Operation Manual
- 5-Year Limited Warranty (excluding heating elements)
Technical Specifications
| Specification |
Details |
| Model |
HIVE 18 |
| Power Output |
18.0 kW |
| Voltage |
240V, Single Phase (1PH) |
| Recommended Room Size |
636–1236 cu. ft. |
| Stone Capacity |
528 lbs (≈16 boxes, sold separately) |
| Dimensions |
22″ Diameter × 29.5″ H (560 × 750 mm) |
| Installation |
Floor-standing with adjustable legs |
| Construction |
Stainless Steel |
| Certifications |
SGS Listed |
| Country of Origin |
Estonia |
| Warranty |
5-Year Limited (excluding heating elements) |
Why Choose the HUUM HIVE 18kW Sauna Heater?
The HUUM HIVE 18kW is the ultimate choice for large home saunas and professional spas. With its massive stone capacity, clean design, and advanced airflow system, it delivers consistent, spa-quality heat every session. Whether you’re building a wellness retreat or upgrading an existing sauna, the HIVE 18kW offers unmatched power and elegance.
Pro Tip: Use 2″–4″ rounded olivine diabase stones (≈16 boxes required) for optimal steam performance. Stack stones loosely to allow airflow and extend element life. Pair with a HUUM UKU Controller for smart, precise sauna management.
