The Harvia 20 Duo steel wood-burning heater is a unique 2-in-1 solution that combines a stylish and effective wood-burning heater and a comforting fireplace. Heating up the heater in both modes lets you enjoy the atmosphere in two rooms. Heat up your sauna to bathing temperature ‒ and enjoy the pleasant atmosphere of the fireplace at the same time. The wood burning heater creates a traditional sauna atmosphere and gives off great steam. After the sauna, you can enjoy the afterheat in the fireplace room, cook sausages and enjoy refreshments… and then hit the sauna again. Style is also one of Duo’s strengths: the outer casing is made of high-quality stainless steel, the wood burning heater features an impressive and robust glass door and the wood burning heater technology is created by the world’s largest sauna wood burning heater manufacturer.
Key Features:
- Floor Mounted
- Stainless Steel Frame
- Wood-Burning
- Large glass door
- Heats two rooms
- 88lb stone capacity (requires 2 boxes sold separately)
*Sauna Heaters are not sold separately - a sauna must be purchased in conjunction with the purpose of any sauna heater or sauna heater package.
Features:
- Harvia Pro 20 DUO woodburning heater with a large glass hatch for medium-sized saunas with a wall embedded glass hatch
- The stone capacity ensures a quickly heating and hot sauna
- Adding firewood from outside the sauna is easy and keeps the sauna room clean
- Convenient removal of ashes from outside the sauna
- The DUO heater creates more space in the sauna and allows more freedom when choosing sauna bench solutions
Technical
Features
User group | Households |
Power output | 24.1 kW |
Installation location | Floor |
Installation orientation | Vertically |
Technical documentation languages | DE EN ET FI RU SV |
Color | Black |
Main material | Steel |
Use environment | Interior - wet area |
Prime energy/fuel | Wood |
Measurements
Product height | 760 mm |
Product width | 430 mm |
Product depth (mm) | 510 mm |
Stone sizes | Ø10–15 cm |
Weights
Net weight (kg) | 76.5 kg |
Stone amount (kg) | 40 kg |
Distances
Safety distance front (non-combustible materials) | 300 mm |
Safety distance front (combustible materials) | 300 mm |
Safety distance behind (non-combustible materials) | 100 mm |
Safety distance behind (combustible materials) | 300 mm |
Safety distance right side (combustible materials) | 300 mm |
Safety distance right side non-combustible materials | 100 mm |
Safety distance left side (combustible materials) | 300 mm |
Safety distance left side non-combustible materials | 100 mm |
Safety distance (Ceiling) | 1300 mm |
Room min. recommended volume | 8 m³ |
Room max. recommended volume | 20 m³ |
Room min. height(depends on connections and therefore from output, star/delta) | 2060 mm |
Logistics
Package height | 860 mm |
Package width | 805 mm |
Package depth | 620 mm |
Gross weight | 85 kg |

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