Wood-fired heater are the traditional method of heating a sauna. They reach very high temperatures that can reach over 100 degrees Celsius at 10 percent humidity. However, the heating process takes longer. The prepared wood is fired in the firebox. Usually it has a glass door, so we can easily check if you need to add it to the oven. In addition, it fulfills another task - the blasting fire and the sound of shooting wood are extremely atmospheric and relaxing. We know this feeling perfectly when we observe a fire in a home hearth. The fumes from the heater are discharged through a chimney, which must be connected to a separate ventilation pipe. This complicates the matter a bit if we want to put such a heater in a home sauna, not a garden. Additionally, you need to provide a place for storing wood. Due to the high temperatures, the distances from the flammable elements must be greater than in other technologies, and this means that for the convenience of using the sauna room, the cubature of the sauna room must be larger.
The wood-burning heater in its design has a special place where stones are deposited that heat up. The principle of operation is the same as in the case of tiled heaters . The stones can be sprinkled with water without fear that the hearth will go out. Modern models of wood heaters take various shapes, some are enclosed in sheet metal, others are completely surrounded by stones. The solution is certainly aimed at lovers of tradition and "rituals". Over time, however, using such a heater can become a nuisance for those who want to take a quick bath to relax after a hard day.