Should the car air conditioning use internal or external circulation?

1 Answers
RuthLee
07/29/25 3:49pm
Whether to use internal or external circulation for the car air conditioning depends on the situation: use internal circulation for short trips and external circulation for long trips. Below is a relevant introduction to internal and external circulation: 1. Internal circulation means the air conditioning system is closed to external air and only uses the air inside the car for circulation. 2. External circulation means the car air conditioning system is open to external air, drawing in air from outside the car for circulation. Below is a relevant introduction to the functions of air conditioning: 1. It cools, heats, ventilates, and purifies the air inside the car. 2. It provides a comfortable environment for passengers, reduces driver fatigue, and improves driving safety.
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