Cabin Air Filter vs. Engine Air Filter
The cabin air filter cleans the air that comes into the interior through the heating, ventilation and air conditioning system. It catches dust, pollen, and other airborne material that can make riding in a car unpleasant, particularly if you have allergies or other respiratory problems. An engine air filter prevents contaminants and debris from getting into your engine. A clogged or overly dirty air filter can result in non-optimal gas mileage and weak performance.
When should I replace them?
Some signs that you need a new cabin air filter are reduced air flow, excessive noise, or persistent bad odors. Even if you don’t have these warnings, you should have the filter checked at least once a year.
An engine air filter is one of those things that you change when it gets dirty… and is not based on time or mileage. For example, a vehicle that drives lots of gravel roads that are dusty would go through a filter way quicker than one that is just used in the concrete jungle. We recommend that you have your filter inspected at every oil change.