Should Car Air Conditioning Use Internal or External Circulation in Winter?

1 Answers
DiAaron
07/29/25 9:26pm
In winter, using the internal circulation mode in car air conditioning effectively prevents external dust and harmful gases from entering the vehicle, providing quicker cooling and heating effects. The external circulation mode, on the other hand, introduces fresh air to maintain airflow between the inside and outside of the car, ensuring clean air inside the cabin. The internal circulation control is located below the front dashboard in the driver's compartment, while the external circulation control is situated below the windshield on the passenger side in the engine compartment. Car air conditioning is designed to regulate and control the temperature, humidity, air cleanliness, and airflow within the vehicle cabin to an optimal state, offering passengers a comfortable environment and reducing travel fatigue.
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