
How the Air Recirculation Button Works to Control Your Cabin Climate

The air recirculation button in a car controls whether the climate system draws in fresh air from the outside or recycles the air already inside the cabin. Pressing this button closes an intake damper, blocking outside air from entering. The system then pulls air from the cabin, runs it through the blower fan, passes it across the A/C evaporator core or heater core, and pushes it back out through the vents. This button is typically represented by a silhouette of a car with a looping or circular arrow inside it.







