Shock ventilation instead of continuous ventilation
With shock ventilation, all windows are opened completely several times a day, which ensures a sufficient exchange of air and a reduction in humidity in the room. Ventilation by draught with open windows facing each other has proved to be particularly effective in practice. If the windows can only be opened on one side, the ventilation process must be correspondingly longer. But how do you ventilate correctly?
It is important not to ventilate continuously with the windows tilted, as this results in very little air exchange. The warm air that rises from the radiators is lost with this ventilation technique and the room cools down in the long run. In addition, cold spots can form at the window. This is where the fine water droplets from the air condense, increasing the risk of mold growth.
During forced ventilation, the thermostats should be turned down, this ensures less loss of heating energy. Experts recommend airing at least three to four times a day, in offices and classrooms even every 20 minutes. The frequency of shock ventilation thus depends on the number of people in a room, because the more people congregate in a small area, the higher the carbon dioxide emissions and the more likely it is that negative effects of bad air will become apparent.