What Causes Fogging on Car Windows in Summer?
2 Answers
The reason for fogging on car windows in summer is due to the low temperature setting of the car's air conditioning, which creates a large temperature difference, and the incorrect direction of the air conditioning airflow. Use Anti-Fog Spray: Spray a small amount of anti-fog spray on the inner surface of the car windows and wipe it clean. This will remove dirt and stains from the windows while forming a thin, transparent protective film that effectively prevents the formation of fog caused by condensation. This method is particularly suitable for cold winters. Blow Cold Air for Convection: Turn on the air conditioning and direct cold air toward the front windshield. Using the air conditioning's dehumidification function, the fog on the windshield can be removed quickly. However, if the humidity is too high and the air conditioning is not effective enough, slightly opening the window can help rapidly reduce the humidity inside the cabin.
Fogging on the car windows in summer is quite annoying, mainly due to high humidity and significant temperature differences. It's hot and humid outside, while the air conditioning inside makes it cool. When moisture hits the cold glass, it forms fog, just like condensation on a refrigerator door. I often encounter this situation, especially after rain or when driving to the seaside where the air is super humid. More people exhaling warm air inside the car increases the humidity, causing the fog on the windows to appear faster. The solution isn't difficult: when turning on the AC, remember to adjust the airflow direction toward the windows, activate the defogging mode, or open the windows slightly to reduce the temperature difference inside and outside. Parking under trees can also accumulate moisture, so it's recommended to regularly clean the windows with anti-fog spray. Safety comes first—fog obstructing vision can easily lead to accidents, so developing good habits can save a lot of trouble.
