How to Remove Fog from Car Windows in Summer?
3 Answers
Methods to remove fog from car windows in summer include: 1. Air conditioning cooling defogging—turn on the air conditioning to blow cold air toward the front windshield, utilizing the dehumidification function to eliminate fog; 2. Detergent-based anti-fogging; 3. Using anti-fog spray—spray the anti-fog agent on the fogged windshield and wipe it dry with a cloth for immediate clarity; 4. Rain visor defogging—utilize a well-designed air deflector to reduce wind resistance, directing airflow toward the side mirrors to accelerate the evaporation of water droplets and fog, clearing the front windshield; 5. External circulation defogging; 6. Rear window heating defogging; 7. Slightly opening the window to allow air convection and reduce temperature differences.
Foggy windows in summer while driving are quite common, and I encounter this frequently. The usual solution is to turn on the air conditioning in dehumidification mode, adjust the air vents to blow directly onto the windshield, as cold air dehumidifies fastest to reduce moisture. At the same time, crack open the windows slightly or use the fan to promote air circulation. If the fog forms too quickly, simply wipe the glass surface with a clean microfiber cloth to avoid leaving streaks. For prevention, regularly clean the windows to minimize dust buildup, or apply some anti-fog spray, which forms a protective film on the glass surface for long-lasting effectiveness. Remember, fogging occurs when warm, humid air inside the car meets the cold glass, causing condensation—more likely during summer rains or when the AC is on. Addressing it promptly is crucial to avoid obstructed vision and safety risks. I recommend checking the interior humidity before driving and preemptively turning on the AC if it's high. From my experience, these small habits can save a lot of trouble.
Car window fogging is mainly caused by temperature differences and humidity, and I prefer using technological solutions to deal with it. Turning on the air conditioning with the cold air dehumidification function is the most effective, directing the airflow towards the windows to quickly disperse the fog. If the car has an automatic defogging mode, it's even better to activate it. Additionally, applying a special anti-fog spray on the inner side of the window forms a protective layer that prevents fogging effectively and can last for several weeks. Ventilation is also important—opening the windows or turning on the fan to circulate air reduces moisture buildup. When fogging occurs, avoid immediately turning on the hot air as it can worsen the fogging, especially in summer. I've tried adjusting the angle and intensity of the air vents to avoid direct airflow on people, making it more comfortable. Modern car systems, such as air circulation control, help balance humidity, which I find very convenient. Regularly cleaning the windows and avoiding leaving wet items in the car can also minimize problems, but safe driving is always the top priority.
