USeePhoto - stock.adobe.comWhy ventilation is more than just getting fresh air
Ventilating 2-3 times a day with windows wide open for 5-10 minutes is the most economical method.
Proper ventilation saves on heating costs, improves air quality, and prevents mold growth. Shock ventilation, airing out rooms several times a day for a few minutes, is particularly effective.
In Germany, airing out rooms by opening windows wide for short periods is a long-standing tradition. Abroad, it often seems unusual, but this method is scientifically proven. Regular, short, and intensive ventilation reduces heating costs, protects the building structure, and improves air quality.
The correct technique for ventilation
1. Shock and cross ventilation
- Open windows wide 2-3 times a day
- 5-10 minutes duration, ideally with a draft
- Close radiator valves during this time
2. Why constant ventilation is harmful
- Tilted windows lead to constant heat loss.
- Especially inefficient when radiators are located under the window.
- Higher heating costs and greater cooling of the walls
3. Using internal ventilation systems correctly
- Do not close completely to allow moisture to drain away.
- Partial closure reduces heat loss
- Avoid the risk of mold
4. Health benefits
- Shock ventilation reduces aerosols in the room air by up to 99,8 percent.
- Important for infection control, especially in communal areas
Conclusion and recommendations
Proper ventilation saves on heating costs, increases living comfort, and protects against moisture damage. Landlords and residents should make cross-ventilation or shock ventilation a regular part of their daily routine. Turn down the radiators before ventilating, ventilate briefly and thoroughly, and avoid leaving windows permanently tilted. This keeps the heat in the room, the air fresh, and the risk of mold low.
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