What to Do When the Car Windows Keep Fogging Up with Air Conditioning On at Night?
1 Answers
Here are the solutions to prevent car windows from fogging up when driving with air conditioning on at night: 1. Blow cold air: When the fog is not severe, you can slightly open both windows to allow air convection, which eliminates the temperature difference on both sides of the windshield, making it difficult for fog to form. Alternatively, turn on the cold air from the air conditioning, which can quickly remove the fog. The advantage of both methods is their quick effect, 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 fogging issue. The fog won’t return after turning off the hot air, and it won’t make passengers feel even colder in the chilly winter. However, the main drawback of blowing hot air is its slow effect, requiring a long wait to see results. Additionally, running the heater while driving consumes more fuel, making it a bit costly. 3. Anti-fog spray: The principle of anti-fog spray is simple—spraying a layer on the windshield forms a protective film that prevents water vapor condensation. However, this protective film has a short lifespan and requires frequent reapplication to maintain its effectiveness.
