Many people see the back arrow button for air recirculation in their cars but don't know what it does. Many people turn it on or off intermittently but don't know exactly when it can help them maximize their air cooling needs. So what does this button do?

The button is used for recirculating the cool air you get from your A/C when you first turn it on. The longer it's on for, the cooler your vehicle will get! If you don't use it, the car will use the air from the outside that is a lot warmer, and your A/C will work harder and continuously to cool the hot air. This can increase your overall fuel consumption.

If you're passing by a smelly dump site like the one after igando general hospital towards Egbeda or the waste processing site around ojota, your recirculation button should typically be on so that air from the smelly dump site will not be allowed inside your vehicle.

As a general rule, when it’s cold outside make sure the recirculation button is switched off! You typically want to pull in cold air for your car cabin to be cool

The main disadvantage of the air-recirculation button is that it may trap humidity inside the car, which results in misted windscreens, especially when the air is cold outside and in wet weather.

It can cause your windscreen to mist up
It can trap humidity in the cabin
If your vehicle is fully loaded with passengers, it can cause it to be stuffy and may make you drowsy

It is typically recommended that you should turn the recirculate function off every hour for 15-30 minutes so that your car can replenish the needed oxygen from outside. Do this in a not-so congested area of the road to avoid harmful fumes from entering your car.

Insightful.

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