Ventilation in a sauna room is extremely important. Not only for your satisfaction and pleasure, but also in the speed it takes to reheat the sauna room.
Lack of fresh air due to insufficient ventilation or poor management of ventilation can create an uncomfortable feeling. This often results in the symptoms of difficulty in breathing, or burning of the skin.
The expanded hot air in the sauna contains proportionately less oxygen than the denser atmosphere outside. Sauna bathers sometimes experience faintness unless the air is changed regularly. Normally two ventilators are built into the walls, as the amount of fresh air that enters with door being opened is insufficient.
The inlet should be located below the heating unit (Commonly a bottom gap in the sauna door or a door vent) and the outlet is located on the opposite side, on the ceiling or just below the ceiling.
Recommended ventilation openings are 4” to 6” diameter, depending on the size of the sauna room.