Should You Use Cold or Hot Air to Defog the Car in Summer?

[EmiliaRose]

Whether to use cold or hot air to defog the car in summer depends on the specific situation. Here is a detailed explanation: 1. Cold air defogging: The root cause of window fogging is the significant temperature difference between the inside and outside of the car—cold outside and warm inside, leading to window fogging. 2. Hot air defogging: When using hot air to defog, the fog on the car windows may initially become heavier, but after a while, the hot air will dry it out. 3. Opening windows or using defogging spray: You can open the car's sunroof (or windows) while driving to maintain the same temperature inside and outside the car, preventing fogging.