Should You Turn on Cold or Hot Air When Frost Forms Inside the Car?
2 Answers
Turn on hot air when frost forms inside the car. More information about frost formation inside the car is as follows: 1. When frost forms on the car glass, the safest traditional method is to warm up the car in advance and use the warm air to melt the frost. However, this method requires a certain amount of time. 2. Do not use snow scrapers, cloth, or cards to scrape the frost off the glass. Because the wind is strong in winter, the frost contains many fine dust particles. Using tools to scrape the frost is equivalent to sanding the glass with fine sandpaper, which will cause some damage to the windows. 3. It is recommended to open the car doors after parking at night to let the heat dissipate before closing the doors and locking the car. This will prevent frost from forming on the car glass.
I've dealt with similar situations many times. Frost inside the car is mainly caused by the combination of interior humidity and external low temperatures, especially after parking in cold weather. When there's frost on the windows, you should immediately turn on the air conditioner's cold air mode, with the vents aimed at the windshield at maximum airflow. The cold air can quickly reduce interior humidity and window temperature, preventing further condensation. After the frost melts, you can switch to warm air for heating to maintain comfort. Turning on the heater directly will cause warm air to hit the cold glass, making the frost worse or causing fogging, which is actually more dangerous. Remember to open the windows for ventilation for a few minutes before parking to reduce humidity buildup, or keep a defogging spray in the car as a backup. This approach ensures safety—don't take it lightly when dealing with such situations.
