What Causes Windshield Fogging When Using Air Conditioning?

1 Answers
SanCharlie
07/24/25 11:08pm
Windshield fogging when using air conditioning is caused by the significant temperature difference between the interior and exterior environments. Solutions for windshield fogging: 1. Front windshield defrosting: Generally, based on the driving environment, the front windshield defrost function can be used to treat the front windshield. If equipped with automatic air conditioning and the ability to select air vent positions, it is recommended to choose the front windshield and central vent positions and turn on the rear windshield heating function. This way, the temperature inside the vehicle is continuously regulated, preventing fogging. 2. Rear windshield heating: If it is not possible to select both directions for air flow simultaneously, turn on the front windshield defrost function and the rear windshield heating function. If the side windows fog up, slightly opening the windows can quickly remove the fog. After closing the windows, once the interior temperature rises, no fog will form.
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