Why can't I see through both car windows when the air conditioning is on?

[LaArabella]

This is caused by the temperature difference effect when the interior temperature is lower than the exterior. Below are relevant introductions about defogging inside a car: 1. One-touch defogging: For vehicles equipped with this function, you can activate the defogging feature when fog appears, making it more convenient and quicker. 2. Lower the interior temperature: Properly open the windows or turn on the air conditioning cooling to reduce the temperature difference between inside and outside the car. This not only reduces fog but also improves air quality inside the car, preventing physical discomfort caused by sudden temperature differences and poor air circulation. For models with a sunroof, you can also open it to utilize the negative pressure ventilation principle. As the car moves, the airflow rapidly flows over the roof, creating negative pressure inside the car, which extracts hot air and facilitates ventilation. 3. Air conditioning AC dehumidification: Lowering the interior temperature in winter can be particularly cold. In this case, simply turn on the AC and increase the set temperature. The dehumidification function of the AC will quickly eliminate the fog.