The Hidden Power of the Air Recirculation Button in Your Car

Despite its benefits, recirculation should not be used all the time.

In cold or rainy weather, keeping the air trapped inside raises humidity levels, which can cause your windows to fog up. Switching back to fresh outside air helps remove moisture and keeps your windshield clear.

On long drives, fresh air is also important for alertness. Recirculating the same air for hours can reduce oxygen levels slightly and make you feel sleepy or sluggish.

One Final Tip

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