Should You Use Internal or External Air Circulation When Car Windows Fog Up on Rainy Days?
2 Answers
On rainy days when car windows fog up, you should turn on the external air circulation. Here is a detailed introduction about car windows: Overview: The car window (car-window) is an essential part of the entire vehicle body, designed to meet the needs of interior lighting, ventilation, and the driver's visibility. Depending on the installation position of the glass, car windows are categorized into front and rear windshields, side windows, and door windows. Others: The structure of car windows is typically curved and sealed, with rubber sealing strips connecting the window frame and the glass. These sealing strips serve to seal and cushion, preventing damage to the windshield glass when the window frame deforms due to stress on the vehicle body.
Over the years of driving, I've encountered foggy windows on rainy days countless times. Personally, I believe using the external air circulation is the better choice because it draws in dry outside air, which helps absorb moisture from the glass and clears the fog. If you use internal circulation, it recirculates the humid and warm air inside the car, and the high humidity can cause fog to form faster and become heavier. For safety, I always turn on the air conditioning fan directed at the front windshield and set it to a higher speed for quicker results. Additionally, dirty windows are more prone to fog buildup, so regular cleaning can help prevent it. When the rain is heavy and visibility is poor, you can't afford to be careless—developing good habits can avoid a lot of trouble. After all, road safety comes first; don't cut corners at your own expense.