How to Deal with Water Mist on the Outside of the Windshield When Using Air Conditioning in Summer?
2 Answers
Methods to deal with water mist on the outside of the windshield when using air conditioning in summer are: 1. Turn on the window defogging mode; 2. Open the windows for convection to equalize the temperature inside and outside the car; 3. Spray defogging agent on the glass; 4. Turn on the warm and cold air inside the car to blow on the glass. The reasons for water mist on the outside of the windshield when using air conditioning in summer are: 1. Temperature difference between the inside and outside of the car; 2. High humidity. The functions of car glass are: 1. Providing external conditions and expanding the field of vision; 2. Protecting against wind, rain, and other elements. The production of glass involves heating the glass in a furnace to near its softening temperature, then sending it into air grids with different cooling intensities for uneven cooling, creating different stresses between the main viewing area and the peripheral areas of the glass. This process produces zone-tempered glass.
As a veteran driver with over 20 years of experience, I often encounter windshield fogging when using the AC in summer. The principle is simple: when it's hot and humid outside while the car interior is fridge-cold, the temperature difference causes the windshield to act like a chilled beverage can—covered in condensation droplets. Here are my habits: First, adjust the AC vents downward to avoid direct airflow onto the windshield upon starting the car. Set the temperature around 24°C—not too low. Keep the air recirculation off to allow airflow. Replace wiper blades regularly and give a couple of swipes if fog gets heavy. Most crucially, turn off the AC five minutes before parking to let the car cool naturally, minimizing temperature differences upon restart to prevent fogging. These methods significantly improve visibility—driving safety comes first!
