• Reduce moisture: Cooking, showering, sleeping and breathing produce a lot of water vapor every day. Without ventilation, moisture collects – and mold is a threat.
• Improve air quality: Fresh air reduces CO₂ and ensures greater concentration and well-being.
• Protect the building fabric: Excessive humidity can cause long-term damage to walls and furniture.

• Ventilate vigorously 2-4 times a day for approx. 5-10 minutes (open all windows wide).
• Ideal: Cross ventilation – i.e. open opposite windows/doors for a draught.
• Do not tilt: Tilted windows hardly exchange any air, but cool the walls.

• Ventilate briefly and intensively immediately after showering or cooking.
• Also ventilate after getting up – especially in the bedroom.

• In winter, it is better to ventilate for shorter periods but more frequently (shock ventilation).
• Avoid tilt position – increases heating costs and encourages mold.

• Do not place furniture directly against cold outside walls – leave a gap of at least 5 cm.
• Ventilate cellars and storage rooms regularly.
• If possible, do not dry laundry in living rooms – or ventilate them intensively.

Correct ventilation not only protects the building, but also ensures a healthy indoor climate.