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| Sauna Ventilation |  Consider using the air circulation system, the best one has an intake vent and an equivalent size exhaust vent to release stale air from the sauna. The proper oxygen level in the sauna will be maintained between the two vents a slow air movement.
No fresh air can enter the sauna without the exhaust vent.
There is no identifiable smell of the exhausted air. And it can be released back into the home, particularly in the colder months when the home is being heated.
Home saunas do not require venting to the outside of the building. The commercial saunas that are continuously used by many people should be vented to the outside.
If you use wood-burning heaters, they require a larger air supply as the fire also needs the oxygen in the sauna room.
Naturally forced sauna ventilation
Drawing cold air from an opening at the bottom of the wall behind the heater, heat pushes air upward. A vertical vent is on the wall opposite the heater. This chimney effect draws the air through the vent and out of the sauna.
Under the bottom bench area there is low heat and no steam.
Mechanically forced sauna ventilation
Such method forces the air mixing over the heater and spreads the heat throughout the sauna evenly.
Circulating the heated air throughout the sauna, the exhaust vent on the opposite side of the heater wall has a fan to draw the air over the heater.
Under the bottom bench area there is low heat and no steam.
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