The stones crack and settle as the fire finds its rhythm, and by the time the room reaches temperature, 264 pounds of rock have absorbed enough heat to keep the löyly going long after the last log has burned down to coals. That thermal reserve is what the Cilindro 20 is built around. A 17 kW wood-burning pillar heater designed and crafted in Muurame, Finland — the same factory that has been making Harvia heaters for over 70 years — the Cilindro 20 carries the Finnish Key Flag mark, a certification reserved for products that are genuinely designed and manufactured in Finland. The rear ventilation duct pulls air through the firebox and into the room faster than a conventional front-vent design, so you spend less time waiting and more time in the heat. The stainless steel shell expands and contracts silently under temperature cycling, and the glass door casts a slow amber glow across the benches while the fire runs.
The stones crack and settle as the fire finds its rhythm, and by the time the room reaches temperature, 264 pounds of rock have absorbed enough heat to keep the löyly going long after the last log has burned down to coals. That thermal reserve is what the Cilindro 20 is built around. A 17 kW wood-burning pillar heater designed and crafted in Muurame, Finland — the same factory that has been making Harvia heaters for over 70 years — the Cilindro 20 carries the Finnish Key Flag mark, a certification reserved for products that are genuinely designed and manufactured in Finland. The rear ventilation duct pulls air through the firebox and into the room faster than a conventional front-vent design, so you spend less time waiting and more time in the heat. The stainless steel shell expands and contracts silently under temperature cycling, and the glass door casts a slow amber glow across the benches while the fire runs.