If you’re trying to figure out where your cabin air filter is located, you’re not alone. They are not as obvious as engine air filters. They are typically found behind the glovebox, under or behind the dash on the passenger side, or in the engine compartment. You should check the manufacturer guidelines for the exact location and how often they need to be changed. A good rule of thumb is every 12,000-15,000 miles.
Cabin air filters are effective in reducing dust and dirt, pollen and mold spores, and other pollutants. If your car has a bad smell, or your air flow is reduced, it may also be a good time to swap out your cabin air filter.