Should the internal circulation be turned on when AC is on?

1 Answers
MacBrooklyn
07/30/25 7:20am
After turning on the AC, if cooling is required, the internal circulation must be activated; otherwise, it would be ineffective. Below is an introduction to internal circulation: Function introduction: Internal circulation is a state of the car's air conditioning system. In this state, the air exchange channels between the inside and outside of the car are closed. When the fan is off, the air inside the car does not circulate; when the fan is on, the air drawn in comes only from inside the car, forming an internal air circulation. Principle: Car air conditioning systems generally have an electric or manual internal/external circulation switch. When external circulation is used, the air conditioning draws air from outside the car, while internal circulation reuses the air inside the car.
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