Harvia Pro 20 RS is a popular choice for cottage saunas because of its practicality. On the right side of the heater is a fixed and easy-to-use 30-litre water tank, which heats the water at the same time as the heater heats up. The Harvia Pro model has a graphite black exterior and a stainless-steel front. The heater's impressive glass hatch creates an atmosphere in the sauna and the large stone space ensures excellent sauna experience.