How and when to use your car's mysterious air recirculation button ?

“How and when to use the mysterious air recirculation button in your car?”

The “air recirculation” button, or “air recirculation”, is an important part of the air conditioning in your car, but its Its use may seem mysterious to some. So, &agrav; what exactly is it for and when should it be activated?

The air recirculation button closes access to the air. the outside air and recycle the air already in the room. à inside the car. This is a function that has several uses. Firstly, it allows the passenger compartment to be cooled or heated more quickly. Indeed, the indoor air, already partially air-conditioned, consumes less energy to reach the desired temperature. Secondly, it is useful for preventing the intrusion of unpleasant odors or external pollutants, such as airborne gases. #39;éexhaust on a busy highway.

However, it is important not to use the recycle function continuously. Recycled air can become depleted of oxygen and loaded with carbon dioxide, which can cause drowsiness and headaches in car occupants. Also, the humid air generated by breathing can cause windows to fog up, reducing visibility.

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It is therefore recommendedé Use the air recirculation button mainly for rapid heating or cooling of the passenger compartment, or to avoid occasional external pollutants. But it is necessary to then return to outside air intake mode to renew the air in the car.

There are situations whereù you should never activate air recycling, especially when there is frost or mist on the windows. In fact, air recycling does not effectively defog the windows, since it maintains humidity. à inside the vehicle. To defog, it is preferable to use heating with outside air, which is usually drier.