The new Harvia 20 Pro gives a good hot bath in small and medium-sized saunas. The cast-iron glass door and the sturdy fire chamber cover with a maximum thickness of 10 mm ensure durability. This model also features adjustable legs to facilitate installation and, for example, help in adjusting the height of the smoke outlet. The stove can be equipped with a side or pipe mounted water heater. The outer casing of the Harvia 20 Pro stove is painted graphite black. The recommended size of the sauna room is 8–20 m3 and the maximum amount of stones is 40 kg.