What to Do When the Car Windows Fog Up While Using Air Conditioning Inside?
2 Answers
Solutions for fogging up car windows while using air conditioning inside are as follows: 1. Purchase specialized defogging products: While cleaning glass dirt, they also form a thin transparent protective film on the glass, which can prevent water vapor from condensing on the glass and forming a fog layer. 2. Open windows for convection: As the temperature inside the car gradually approaches the outside temperature, the fog will dissipate. 3. Use the air conditioning system: Turn on the car's fan and cooling or heating switch, so that cold or warm air blows onto the glass, quickly dispersing the fog with fast and direct results. Cause of fogging: When the temperature inside the car is low and the outside temperature is high, water vapor condenses into water on the glass.
I've encountered this situation before while driving. The inside of the car was comfortably cool with the AC on, but the outside of the windows fogged up, creating a white haze that made it hard to see anything, which was quite dangerous. Later, I asked an experienced driver and learned that this issue usually occurs when the cold air from the AC meets the hot air outside, causing condensation. The solution is actually quite simple: first, try switching the AC to recirculation mode to reduce the amount of outside humid air entering the car; then adjust the air vents to avoid blowing directly on the windows, such as directing the airflow toward your body; at the same time, turn on the rearview mirror defroster or use warm air to blow on the windshield. Before driving, always remember to clean the inside and outside of the windows, as too much oil film can easily cause fogging. Once, I accidentally fogged up the windows while using the AC in the rain and almost rear-ended another car. Since then, I always check my AC settings. Safety first—if the fog gets too thick, pull over immediately to deal with it.
