Subaru vehicles are equipped with a HEPA filter system, located behind the glove box. The filter is responsible for filtering air that enters the cabin of the vehicle. In Georgia, this filter is subjected to particulates year round. It is important to change the cabin air filter in order to optimize the quality of air inside the passenger cab of the vehicle. It will also allow the A/C and vented air to flow into the cab more freely. Replacing the filter every 15,000 miles or at least once a year is part of the regular maintenance schedule tasks listed in the maintenance interval schedule for the vehicle.
If you or someone who travels in your vehicle suffers from allergies, asthma, or other respiratory conditions, you may need to replace the cabin air filter more often to help keep the cabin air as clean as possible.