The HUUM Hive Flow Wood-Burning Sauna Heater combines efficiency, sustainability, and aesthetic appeal for a truly immersive sauna experience. With 75% of the firewood's heat directed to your sauna, this design provides an extra session with the same amount of wood, saving both energy and resources.
Environmentally conscious, the Hive Flow emits just 346 mg/m³ of CO and 25 mg/m³ of particulates, setting a high standard for eco-friendly heating. Its patented design allows for safe installation just 150 mm from combustible materials, making it perfect for compact sauna spaces.
Built to last, the Hive Flow can hold up to 150 kg of stones, plus an additional 35-40 kg in the stone cage, ensuring gentle, enduring warmth even after the fire is out. The large glass door adds a warm, inviting glow, creating a cozy fireplace effect.
Meeting German and EU environmental standards, the Hive Flow also offers an LS model for heating from an adjacent room. Available in Mini and Mini LS versions, it’s a flexible, sustainable choice for your sauna.
Features:
- Power rating: 8.5 kW
- Efficient wood-burning design for eco-friendly heating
- Durable stainless steel construction with an elegant design
- Robust build for longevity and reliable performance
- Recommended steam room size: 6–14 m³ (212–494 ft³)
- Holds up to 105 kg (231 lb) of sauna stones for optimal heat retention
- Compact dimensions: Height 884 mm (34.8 in), Width 450 mm (17.7 in), Depth 493 mm (19.4 in)
- Suitable for firewood up to 300 mm (11.8 in) in length
- Large glass door for a cozy, ambient glow in your sauna
- Optional stone cage for additional heat retention on the flue
- Firebox extension available (LS model) for adjacent room heating
- Flue diameter: 114 mm (4.5 in)
- Treated with natural oils for an eco-friendly finish
- 5 mm thick stainless flame tamer for even heat distribution
- Crafted with care in Estonia
- Limited 5-Year Warranty
HIVE Flow Wood Specs:
HIVE Flow Mini 8.5kW
- Heat output: 8.5 kW
- Ideal for sauna rooms from 6 m³ (212 ft³) to 14 m³ (494 ft³)
- Rock capacity: approximately 105 kg (231 lbs) for optimal heat absorption
- Total weight: 54 kg (119 lbs)
- Dimensions: Height 884 mm (34.8 in), Width 450 mm (17.7 in), Depth 493 mm (19.4 in)
- Maximum firewood length: 300 mm (11.8 in)
- Flue size: 114 mm (4.5 in)
HIVE Flow Wood 9.8kW
- Output capacity: 9.8 kW
- Suitable for steam rooms from 8 m³ (282 ft³) to 18 m³ (635 ft³)
- Sauna stone capacity: approximately 150 kg (330 lbs)
- Total unit weight: 67 kg (148 lbs)
- Measurements: Height 884 mm (34.8 in), Width 526 mm (20.7 in), Depth 586 mm (23.1 in)
- Maximum firewood length: 300 mm (11.8 in)
- Flue diameter: 114 mm (4.5 in)
HIVE Flow Mini 8.5KW LS
- Power output: 8.5 kW
- Recommended sauna room size: 6 m³ (212 ft³) to 14 m³ (494 ft³)
- Rock holding capacity: up to 105 kg (231 lbs)
- Weight: 59 kg (130 lbs)
- Dimensions: Height 884 mm (34.8 in), Width 450 mm (17.7 in), Depth 613 mm (24.1 in)
- Suitable firewood length: up to 300 mm (11.8 in)
- Flue diameter: 114 mm (4.5 in)
HIVE Flow Mini 9.8KW LS
- Heating capacity: 9.8 kW
- Designed for sauna rooms between 8 m³ (282 ft³) and 18 m³ (635 ft³)
- Rock holding capacity: around 150 kg (330 lbs)
- Total weight: 73 kg (160 lbs)
- Dimensions: Height 884 mm (34.8 in), Width 526 mm (20.7 in), Depth 706 mm (27.8 in)
- Suitable firewood length: 300 mm (11.8 in)
- Flue diameter: 114 mm (4.5 in)
Safety Distance:
Package Contents:
- Wood-fire sauna stove
- Installation and operation manual
- 5-Year limited warranty
Made with care in Estonia
HUUM heaters are made of stainless steel and go through a long and carefully supervised production process to guarantee the best quality of each product.
Steam like in a traditional sauna
HUUM heaters are built by using very small amounts of metal so that the heat comes mainly from the stones and only very little from the metal. This way we can maximize the good negative ions from the stones, like in traditional saunas, and keep the positive ions from the metal at a minimum. Together with a high stone capacity this is our secret to healthy, mild and long-lasting steam.
Sauna in Estonian tradition – a cleansing and healing holy place