How to Deal with Window Fogging When Using Air Conditioning in the Car?
2 Answers
Here are the methods to solve the problem of window fogging when using air conditioning in the car: 1. Blow cold air: When the fogging is not severe, you can appropriately open both windows to allow air convection. Alternatively, turn on the cold air from the air conditioning, which can quickly eliminate the fogging. The advantage of both methods is their quick effectiveness, but the downside is that they are not suitable for prolonged use in cold weather or during rain or snow. 2. Blow hot air: Blowing cold air provides a quick but temporary solution, while blowing hot air can fundamentally solve the issue of window fogging. The fogging will not return after the hot air is turned off, nor will it make the car's occupants feel even colder in the winter. However, the biggest drawback of blowing hot air is its slow effectiveness, requiring a long wait to see results. 3. Anti-fog spray: The principle of anti-fog spray is simple. Spraying a layer of water on the windshield forms a protective film that prevents water vapor condensation. However, the effectiveness of this protective film is short-lived, requiring repeated applications to maintain the effect.
When the windows fog up while I'm using the air conditioning in the car, it's usually caused by a significant temperature difference between the inside and outside of the vehicle, especially common during rainy days or winter. I take immediate action: turn on the defrost mode (most cars have a dedicated button for this) to direct airflow toward the windshield; then switch on the cold air or lower the temperature, as cold air can quickly absorb moisture to clear the fog; simultaneously, switch to recirculation mode to prevent humid outside air from entering. Wiping the inside of the glass with a cloth can provide a temporary solution, but it's best to do this after parking to avoid distraction. For regular maintenance, I replace the cabin air filter periodically to keep the system efficient and clean the window seals to prevent moisture leakage. If fogging occurs frequently, check the vehicle's insulation or use anti-fog spray coatings. Safety comes first—fogged windows impair visibility and can easily lead to accidents, so I always handle the situation in a safe area before driving. These small tips have kept my driving worry-free for years, ensuring clear visibility.
