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Ventilate in winter: This is how you avoid mold
If you want to reduce the humidity indoors, you should ventilate regularly, even in winter.
Ventilation in sub-zero temperatures? This is how you effectively protect your home from mold. The best tips for winter and cold days.
Ventilation in winter: The most important things in brief
-> 5 minutes three times a day is enough in sub-zero temperatures.
-> Tilt the window? Not a good idea - it'll just cool the walls!
-> Tip: With a hygrometer you can keep an eye on temperature and humidity. 40-60% is perfect - in the bathroom up to 70%.
Regular ventilation is not only important for a good indoor climate, it is also necessary to prevent mold. In addition to structural defects, the main reason for mildew and mold indoors is excessive humidity.
Especially in the winter months, when it gets really cold outside, the risk of mold increases. But how often and, above all, how long should you ventilate in winter and when temperatures are below zero?
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Ventilation in winter: Why it's particularly beneficial when temperatures are below zero
Admittedly, airing out in winter can be uncomfortable, especially if you're one of those people who prefers to stay toasty warm. Nevertheless, ventilation is extremely important, even in sub-zero temperatures, to ensure good air circulation and to supply the interior rooms with fresh air.
In general, cold air is drier. So if you have high humidity at home, you can effectively reduce the humidity just by ventilating regularly, especially in winter. And you don't have to open the windows for long:If the temperatures fall below 0 degrees, it is sufficient to ventilate for five minutes three times a day.
By the way, leaving the window permanently tilted does not improve the air quality and only ensures that the walls cool down. This in turn can promote mold and is therefore not recommended.
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When it rains, the humidity outside is correspondingly higher. In this case, it is much more difficult to reduce the humidity. If possible, you should keep the windows closed when it rains and only ventilate them afterwards.
While in the winter months of December, January and February 5 minutes is enough, you shouldin autumn and spring again around 10 to 20 minutesventilate. Because warm air can absorb more moisture.
A hygrometer is suitable for measuring humidity. It shows not only the temperature in the room, but also the humidity. Incidentally, this should be between 40 and 60% in all living and working spaces. In the bathroom it can also be up to 70%.
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