How to Deal with Fogging on the Outside of the Car Windshield?

[DeGia]

Solutions for fogging on the outside of the car windshield: When the fog is not heavy, you can appropriately open both side windows to allow air convection, which eliminates the temperature difference on both sides of the windshield, making it difficult for fog to form. Alternatively, turning on the air conditioner's cold air can quickly remove the fog. The principle of defogging agents is simple; spraying a layer on the windshield forms an effective protective film that prevents water vapor condensation. However, this protective film has a short lifespan and requires frequent reapplication to maintain its effect. If the system detects impending fogging, the air conditioning system initiates a series of defogging operations, such as adjusting temperature, airflow direction, air volume, and internal/external circulation. Blowing cold air provides a quick but temporary solution, while blowing hot air can fundamentally solve the problem of windshield fogging.