Is the air conditioner of the car a constant exhaust air conditioner or a variable exhaust air conditioner?

1. First of all, you need to know whether your car is air-conditioned manually or automatically. For example, manual air conditioning must be fixed.

2. There are two types of automatic air conditioners: fixed exhaust and variable exhaust. This is mainly distinguished by the sound of air conditioning. If you press the A/C key of the air conditioner switch, if you hear a beep, the air conditioner compressor starts to work and the instantaneous speed of the instrument panel changes, which is fixed exhaust.

3. Automatic ventilation means that the air-conditioning compressor gradually participates in the work, and there is no "beep" sound.