What to Do When the Car Windows Are Fogged Up?
1 Answers
Fogging occurs due to excessive humidity and the significant temperature difference between the inside and outside of the car. Fog can obstruct the driver's vision and pose safety hazards. Here are some methods to defog: 1. Use Warm Air to Defog: In cold winter weather, many people use warm air, making it the most suitable method for defogging. However, warm air should not be used after fog has already formed. Turning on the heater while driving when the windows are already fogged can worsen the fogging, especially in rainy conditions with high humidity, instantly turning the windshield into frosted glass, which is very dangerous. Therefore, it is recommended not to use warm air to defog the windshield while driving. Instead, it's best to dry the windows with warm air before starting the drive. 2. Use Defogging Products: There are many defogging products available now. Spray them onto the windshield, then wipe and spread evenly with a cloth. While cleaning the glass, these products also form a thin, transparent protective film that prevents moisture from condensing on the glass and forming fog. This method can effectively last for about one to two weeks, making it quite convenient. 3. Use Air Conditioning to Defog: This method is widely known. When the windows are fogged, turn on the air conditioning to blow air onto the glass. The vents below the windshield will direct a strong airflow to quickly remove moisture and reduce the temperature difference between the inside and outside of the glass, effectively eliminating fog. This method works quickly but is impractical in winter as it can make passengers feel cold. Additionally, repeatedly turning the air conditioning on and off can pose safety risks while driving. It is generally suitable for temporary use during rainy conditions. 4. Open Windows to Defog: This method involves opening both side windows to allow air circulation, equalizing the temperature inside and outside the car, which makes the fog disappear. However, this is only suitable when the fog is not too heavy and the temperature is not too low. It is not recommended during rain, low temperatures, or when driving at high speeds.
