Ventilation (Sauna and Wellness Cabins)

Ventilation is a system of controlled air exchange in a sauna or wellness cabin that supplies fresh air and removes moisture and heat once use has finished. In a Finnish sauna, air flows from the inlet vent near the heater towards the outlet vent on the opposite side of the cabin, creating even airflow without cold spots at floor level. A correctly sized outlet vent allows the air in the cabin to be exchanged several times per hour. Ventilation also reduces the risk of moisture condensation in the wooden structure between sauna sessions. In outdoor cabins, the ventilation openings are combined with protective grilles against insects and rodents.

Advantages of controlled ventilation

• Even temperature distribution in the cabin: Controlled airflow eliminates significant temperature differences between the floor and the top bench.
• Protection of the wooden structure: Removing moisture after sauna use reduces the risk of long-term dampness in the cladding and structural elements.
• Fresh air supply during use: The system ensures sufficient air exchange even during longer sauna sessions.
• Low maintenance requirements: Passive ventilation openings with no moving parts require only occasional checks to confirm they remain clear.