How to Turn On the Car Air Conditioner's Internal and External Circulation?

1 Answers
McCollin
07/30/25 8:19am
To activate the car air conditioner's internal and external circulation: Use the speed adjustment knob. Turning it clockwise activates the external circulation, while turning it counterclockwise activates the internal circulation. The working principles of the car air conditioner's internal and external circulation are as follows: Internal circulation closes the airflow channel between the inside and outside of the car, creating an airflow cycle within the vehicle. External circulation brings outside air into the car through the air filter and blower, replenishing fresh air inside. The car air conditioner is designed to regulate and control the temperature, humidity, air cleanliness, and airflow within the car cabin to an optimal state, providing a comfortable environment for passengers and reducing travel fatigue.
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