What to Do When the Car's Exterior Glass Fogs Up with the Air Conditioning On?
2 Answers
Opening the car window or wiping the window with a small amount of cleaning solution can eliminate the fog. Here is some relevant information: 1. Car Glass: Car glass is one of the vehicle body accessories, primarily serving a protective function. The main types of car glass include laminated glass, tempered glass, and zone-tempered glass, which can withstand strong impacts. Car glass is categorized by its position into four types: front windshield, side window glass, rear windshield, and sunroof glass. 2. Production of Car Glass: Car glass is produced by heating the glass in a furnace to near its softening temperature, then quickly transferring it to fans with varying cooling intensities for uneven cooling. This process creates different stress zones in the main viewing area and the peripheral areas of the glass. Typically, this method produces zone-tempered glass.
I often encounter the issue of fog forming on the outside of my car windows when using the air conditioning, especially during humid rainy days or when there are significant temperature changes in the morning and evening. The root cause of this fogging is that the cold air from the AC rapidly lowers the temperature of the glass surface, causing the humid outside air to condense into water droplets upon contact, which directly obstructs visibility and poses a serious safety hazard. My approach to dealing with this is as follows: First, immediately activate the defogging function of the AC and adjust the air vents to direct airflow toward the windshield. Second, if the fog persists on the outside, avoid lowering the AC temperature further; instead, raise it to around 22°C to prevent the glass from getting too cold. Third, slightly open the side windows to increase air circulation, which helps quickly disperse the moisture. Remember to use the recirculation mode to minimize the entry of outside humid air, ensuring better long-term results. For prevention, I always clean my windows with soapy water or a specialized anti-fog solution during car washes, which helps avoid future issues. For safety, when heavy fog occurs on the highway, I always pull over and turn off the engine before addressing the problem—never take unnecessary risks. These small tips can significantly enhance driving comfort and safety.
