Harvia Linear 18 Compact Wood-Burning Sauna Heater
450 (W) x 510 (D) x 770 (H) mm
5–18 m³
A compact Finnish wood-burning sauna heater designed for fast heat-up performance, efficient airflow and authentic sauna experiences. Its large glass hatch creates a warm atmosphere while the double-shell structure allows flexible installation with minimal safety distances.
Linear 18 Compact Wood-Burning Sauna Heater
Power
14.3 kW
Heating type
Wood-burning sauna heater
Suitable sauna size
5–18 m³
Control type
Manual wood-burning operation
Storage temperature max
50°C
Electrical supply
Not required
Dimensions
450 (W) x 510 (D) x 770 (H) mm
Main material
Steel
Stones required
40 kg sauna stones (2 boxes of 10–15 cm stones recommended)
Safety distances
92 mm sides and rear | 300 mm front | 1300 mm ceiling clearance
Key Features
Efficient Heat Distribution
The large stone compartment delivers soft, even and long-lasting sauna heat.
Fast Heat-Up Performance
Efficient wood-burning design quickly heats the sauna while maintaining consistent warmth.
Authentic Finnish Sauna Experience
Designed and manufactured in Finland for traditional sauna performance and atmosphere.
Large Glass Hatch Door
The cast-iron glass door creates a warm ambience while allowing visibility of the fire.
Compatible with Hekla saunas
Hekla Barrel 210
Hekla Barrel 250
Hekla Cube 210
Hekla Cube 250
Hekla Barrel 250
Hekla Cube 210
Hekla Cube 250
Professional installation required
For electric heaters:
Qualified electrician required
Correct power supply needed
Safety clearances must be followed
For wood-burning:
Flue/chimney setup required
Ventilation and clearance requirements
Suitable outdoor installation
Warranty
Harvia heaters are built for reliable performance and backed by manufacturer warranty coverage. Terms may vary depending on the model and installation conditions.
Need help choosing the right heater?
Our team can help you match the correct Harvia heater to your sauna size, usage and installation requirements.
Need help choosing the right heater?
Our team can help you match the correct Harvia heater to your sauna size, usage and installation requirements.