How to Deal with Foggy Car Windows in Summer?
3 Answers
Here are the methods to handle foggy car windows in summer: 1. Spray Anti-Fog Agent and Other Preventive Methods: Spray a small amount of defogging agent on the car windows and wipe it clean to remove dirt and stains from the glass. While polishing the glass, a transparent protective film is formed on the glass, which can effectively prevent the condensation of water vapor on the glass and the formation of fog. 2. Air Conditioning Cooling Method: Use the air conditioning's dehumidification function to reduce air humidity and remove fog. In summer, especially when multiple people enter the car, if the air conditioning is not turned on in time, the high humidity of the exhaled air can quickly cause the windshield to fog up. At this time, you can turn on the air conditioning to blow cold air toward the windshield. Using the air conditioning's dehumidification function, simply adjust the temperature to the middle setting, and the fog on the windshield will be removed shortly. 3. Air Conditioning Heating Method: Use the method of reducing the temperature difference to remove fog. In addition to using warm air in winter, you can also blow hot air on the glass during summer rainy days to quickly raise the temperature of the front glass and reduce the temperature difference between the inner and outer surfaces of the window glass, which can promptly prevent excessive fogging on the windshield.
I have always dealt with glass fogging by combining prevention and immediate action. In summer, high humidity and temperature differences make it easy for the glass to fog up. As soon as I get in the car and notice fogging, I immediately turn on the air conditioning to the coldest setting, direct the airflow toward the windshield, and activate the external circulation mode to quickly dehumidify. I make it a habit to avoid leaving wet items in the car, such as empty drink bottles or umbrellas, as they increase humidity. Regularly cleaning the interior glass surface with a slightly damp soft cloth is important to prevent grease buildup. Preheating the air conditioning for a few minutes before setting off is also effective. I always keep a bottle of anti-fog spray handy—it lasts a long time, with one application keeping the glass clear for about a week. Remember, fogged-up windows obstruct visibility and are dangerous, especially on highways, so never push through it while driving.
As a family user, I pay special attention to windshield fogging because driving kids to and from school requires clear visibility. A simple method is to open the windows for air circulation when fog first appears—it can dissipate significantly in just two minutes. Combining this with turning on the AC cold air and directing it at the glass works even better. Keep a dry microfiber cloth in the car for quick interior surface wiping. For prevention, regularly replace the cabin air filter to reduce humidity, and avoid leaving wet clothes or open water bottles in the car when parked. I've found that keeping in-car humidity below 50% minimizes fogging—check your vehicle manual. Safety first: pull over if fog obstructs visibility, don't get distracted. Pre-ventilating by opening windows or sunning the car before starting can greatly reduce the issue.
