The main principle in ventilation of shelters is to ensure that the ambient air is suitable for minimum living conditions for the people using the shelter during their stay in the protection environment. In order to prevent radiation, biological and chemical dust and particles from leaking into the shelter, a positive pressure of 50 Pa should be created in the interior compared to the exterior. Shelter air should not be heated, cooled or humidified. Shelters should include both normal ventilation and protective ventilation systems.

AIRPLUS Shelter Plant ventilates the shelter environment by cleaning the air passing through the filter that holds nuclear particles thanks to its special design. It is produced as 100% fresh air.