Which air circulation mode to use when car windows fog up?

1 Answers
StTalia
07/30/25 10:52am
When car windows fog up, you should use the external air circulation mode. The fastest and most effective method when noticing fog on the windshield is to first adjust the air conditioning vents to the front windshield, turn on the AC cooling function, and activate external circulation. Using maximum fan speed, it typically takes just about ten seconds to quickly dissipate the fog on the windows. Generally, car air conditioning systems come equipped with two defogging function buttons: front window defogging and rear window heating. Here's relevant information: 1. Front window defogging: This function directs air conditioning airflow to the front windshield to reduce temperature differences on both sides of the glass for defogging. 2. Rear window heating: When the rear window fogs up, the rear window heating function can evaporate the moisture to achieve defogging.
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