Should You Use Internal or External Air Circulation When Running the Car AC in Summer?

1 Answers
LaKingston
07/29/25 5:03pm
Whether to use internal or external air circulation when running the car AC in summer depends on the situation: use internal circulation for short trips and external circulation for long trips. Here are the meanings of internal and external air circulation in cars: 1. Internal circulation means the AC system is closed off from outside air and only recirculates the air inside the car cabin; 2. External circulation means the AC system draws in fresh air from outside the vehicle for circulation. Reference: Car air conditioning refers to the air conditioning device installed in vehicles, capable of cooling, heating, ventilating, and purifying the air inside the cabin to provide a comfortable environment for passengers, reduce driver fatigue, and improve driving safety.
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