Why is there water vapor inside the car?

1 Answers
MadisonMarie
07/29/25 8:14pm
Water vapor inside the car is caused by a significant temperature difference between the interior and exterior of the vehicle. Relevant information is introduced as follows: The main reason for water vapor on the car windows is that the glass is in contact with the outside environment, which is cooler, causing the water vapor inside the car to condense on the glass. There are two ways to remove this fog: either increase the temperature of the glass or reduce the humidity inside the car. Adjust the air conditioning vents to the windshield setting, turn on the air conditioning, and let the compressor work to dehumidify. However, if the temperature control knob is set to the cold air setting at this time, the people inside the car will definitely feel unbearably cold, so the temperature knob can be placed in the warm air position to achieve both defogging and heating purposes.
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