Should You Use Internal or External Air Circulation for Defogging in Summer?

1 Answers
LolaMarie
07/29/25 11:36pm
Use external air circulation for car defogging. Here are some related tips for defogging inside a car: 1. One-Button Defogging: For vehicles equipped with a one-button defogging function, simply activate it when fogging occurs for quicker and more convenient defogging. 2. Lower the Interior Temperature: Slightly open the windows or turn on the air conditioning to reduce the temperature difference between the inside and outside of the car. This not only minimizes fogging but also improves air quality inside the car, preventing discomfort caused by sudden temperature changes and poor air circulation. For models with a sunroof, opening it can utilize the negative pressure ventilation principle. As the car moves, the airflow over the roof creates negative pressure inside, drawing out hot air and facilitating ventilation. 3. Air Conditioning AC Dehumidification: Lowering the interior temperature in winter can be too cold. In this case, turn on the AC and increase the set temperature. The AC's dehumidification function can quickly eliminate fogging.
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