Let’s face it, does anybody know what all of the buttons are used for in their car. Most vehicles have a recirculation button with the Air-Condition (AC) controls in their cars. But what it does has bemused us all forever.
Well, the easy answer is to use it in the summer and turn it off in the winter.
What does the recirculation button do?
The recirculation button simply takes the air from inside the car and recirculates it in the cabin instead of pulling fresh air from outside. On hot days if you do not recirculate the cooler air in the cabin, then your AC system is pulling hot air from outside and trying to cool it. Using the recirculation feature will get your car cooler and will decrease the wear and tear on your AC system.
Quick Tip: if your car has been parked in the sun, and is very hot inside, its better to roll the windows down and turn recirculate off for the first minute or so to get rid of the super hot air inside the car before turning the recirculate on.
Another important thing to mention is when you are stuck in traffic, regardless of if it is summer or winter, be sure to use the recirculate. If you are pulling air from outside, then you are pulling in all the pollutants and carbon monoxide from all the traffic.
Studies show that recirculating your AC can cut down on the pollutants entering your vehicle by 20% when stuck in traffic!
So in summary, using the air recirculation button will Save you fuel; Reduce pollutants; and reduce wear and tear on your air conditioning.