Should You Use Internal or External Air Circulation for Car Heating in Winter?

1 Answers
CarolineLee
07/29/25 10:07pm
In winter, it is recommended to use the internal air circulation mode for car heating. The internal circulation function effectively prevents external dust and harmful gases from entering the vehicle cabin, providing faster cooling and heating effects. The external circulation function supplements fresh air and maintains airflow between the inside and outside of the vehicle, ensuring clean air inside the cabin. The internal air circulation control is located below the front dashboard in the driver's compartment, while the external circulation control is positioned below the windshield on the passenger side in the engine compartment. The car air conditioning system is designed to regulate and control the temperature, humidity, air cleanliness, and airflow within the vehicle cabin to optimal conditions, providing passengers with a comfortable riding environment and reducing travel fatigue.
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