Ventilation and airing

Ventilation may sound like something technical and complicated, but from the point of view of the tenant, it's really quite simple: fresh air enters the apartment via air inlet vents, which must not be blocked and which must be kept clean. Air exhaust vents, on the other hand, draw air out of the apartment, thus also removing smells and moisture. Air exhaust vents also cannot be blocked and they must be kept clean. 

Please make sure that you do not accidentally prevent the ventilation from working properly.

Fresh air enters the apartment via air inlet vents, which must not be blocked. Roof-installed extractors and exhaust air vents create a negative pressure in the apartment, which in turn causes fresh air to flow in via the fresh air vents. The settings of the roof-installed extractors and exhaust air vents are based on balanced ventilation in the entire property. So if you block the vents in your apartment, the ventilation balance in the whole property may suffer and change. Additionally, air will start to seep in from the wrong places causing draughts or bringing smells from the neighbouring apartments into yours.