Why Does Frost Form on the Inside of Car Windows?

[AnnieAnn]

Frost forming on the inside of car windows is primarily caused by the temperature difference between the cold glass (in contact with the outside environment) and the warm, humid air inside the vehicle, leading to condensation of water vapor on the glass surface. Here are solutions to address frost on car windows: 1. Use the heater: Activate the vehicle's heating system to melt the frost. Start the engine, wait until the coolant reaches operating temperature, then turn on the cabin heater with airflow directed toward the windshield. Once melted, wipe the glass dry with a clean cloth. 2. Apply de-icing spray: Specialized anti-frost sprays can effectively dissolve frost without scratching the windshield surface.