Harvia - The Wall HeaterHarvia The Wall heater boasts a clean, streamlined design that reflects Scandinavian minimalism. Despite its output of up to 9 kW, The Wall requires only little space inside the sauna. This heater was created with a focus on functionality. The heater can be installed in both left and right handed directions. Ergonomic and illuminated operating switches are visible and simple to use even in dimly lit saunas. The Walls structures and material are strong