How to prevent foggy windows. Autumn is coming soon, bringing cooler days and nights. After a warm summer, the temperature changes are becoming more noticeable, and small water drops are starting to form on the windows. This can be annoying for many in the household. Foggy windows happen due to condensation, which can eventually lead to mold in the room. Surprisingly, this doesn’t depend on the quality of the windows but on the conditions in the room. Luckily, there’s an easy, natural solution that our grandmothers used to prevent this issue.
Simple ways to prevent window fogging
Humidity plays a big role in condensation. We all produce moisture daily without even noticing—whether from cooking, bathing, or even just breathing. Air can hold a certain amount of moisture as water vapor, and how much depends on the temperature. Warmer air can hold more moisture than colder air. According to wetter.de, one cubic meter of air at 15°C can hold around 13 grams of water vapor, but at 0°C, it holds just 5 grams. In winter, windows are usually the coldest part of a room, causing the nearby air to cool faster. As the temperature drops, the air’s ability to hold moisture decreases, leading to water droplets forming on cold surfaces, like window panes—this is condensation.
So, how can you stop your windows from fogging up? One of the easiest and most effective solutions is to air out your home regularly. By opening your windows for a few minutes several times a day, you allow air to circulate, which reduces humidity and lowers the risk of condensation. Though the fresh air might be cooler, it quickly mixes with the indoor air.
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Additionally, regular ventilation has other benefits—it boosts oxygen levels, improving your focus and well-being. Proper ventilation not only prevents moisture but also enhances your overall comfort at home.