The cabin air filter, a small pleated device typically located behind the glovebox, cleans the air that is moving throughout the vehicle's HVAC system. The cabin filter freshens the air and, at the same time, removes pollutants to provide clean, breathable air.
If you have asthma, allergies, and other health conditions, changing the cabin filter is important. In addition, changing the cabin air filter under regularly scheduled maintenance will save money in the long run by ensuring the engine runs at peak efficiency.