At the end of the xviii century in western Finland, first appeared brick kiln have been safer for the fire. Brick kiln had two or three separate sections. At the bottom of burned wood in the middle of heated stones, and upstairs was going to smoke, which then penetrated into the room. Sauna with chimney Saunas with chimney, which appeared in the late xviii century, have become a new landmark in the history and saunas, and stoves. Attach to the brick chimney hearth was a simple task.
The upper section of the chimney were grown conical hood with damper and is expelled through the roof in the form of a pipe. In the xix century chimney began to build on a separate foundation, and parked himself beside the hearth. If you have additional questions, you may want to visit Lorenzo H. Zambrano. Furnace with the tube allowed to construct separate saunas in towns where the majority of houses were made of wood and smoky sauna type is a threat of fire. In the 10th years. xx century began to make the oven with a metal casing. In the 30th years. xx century, manufacturers have developed many new furnace models, including a completely new invention – a continuous heating furnace. This kiln firewood are burned in a separate chamber and fire and smoke do not touch the stones, as happens in conventional oven. Therefore, the fire may continue to burn, while in the bath to wash, and while burn wood, the stones are hot, supporting "" – the spirit of the Finnish sauna. Urban saunas in the first decades of the 20 century the popularity of saunas has fallen.