Is it necessary to turn on the AC when defogging while driving in summer rain?

[AlyssaFitz]

It is not always necessary to turn on the AC when defogging while driving in summer rain, because under normal circumstances, both the cold air and warm air in the car can help eliminate fog. The formation of fog is caused by moisture and temperature. After turning on the front windshield defogging function, it will gradually dry out, but this process takes a relatively long time. Correct usage of the car's A/C button: Automatic air conditioning: You need to set the temperature in advance, and then it will automatically turn the A/C switch on or off based on the light sensor and temperature sensor to maintain a constant temperature inside the car, ensuring comfort. Manual air conditioning: You need to manually adjust the air vent’s airflow and temperature, as well as manually press the A/C switch button. Generally, it is difficult to maintain a constant temperature inside the car, so frequent manual adjustments are required to ensure comfort.