Should the Air Conditioning Be Set to Internal or External Circulation in Winter?

1 Answers
DiValeria
07/30/25 12:04am
In winter, the air conditioning should be set to internal circulation. The function of internal circulation is to effectively block external dust and harmful gases from entering the car, providing faster cooling and heating effects. External circulation, on the other hand, is used to replenish fresh air, maintaining air circulation between the inside and outside of the car and keeping the cabin air clean. The internal circulation button is located below the front dashboard in the driver's compartment, while the external circulation button is positioned below the windshield on the passenger side of the engine compartment. The purpose of the car's air conditioning system is to regulate the temperature, humidity, air cleanliness, and airflow inside the car cabin, maintaining optimal conditions to provide a comfortable environment for passengers and reduce travel fatigue.
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