How the A/C system refresh air inside a car?

In my car, there are two modes of the A/C system: take outside air and circulation only. So my question is in the 2nd mode, how the car takes in fresh air and we still being alive?

Comments

  • there is ample oxygen in the air in your car without being replenished with outside air. every time you open the door its renewed

Sign In or Register to comment.