Cabin Air Filter and Engine Air Filter: What?s the Difference?
Posted October 5, 2025 2:15 AMYou may have heard someone say they just got the air filter replaced in their vehicle. But did you know your vehicle has two different major air filters and they both perform quite different—but very important—duties?
Today’s vehicles have a cabin air filter, and an engine air filter. The engine air filter cleans the air that enters your engine so it can run better, and so contaminants don’t foul vital parts. While the cabin air filter keeps the air inside the vehicle’s cabin clean, the place where you and your passengers sit.
It is important that you have each of these types of filters changed at regular intervals, or earlier if either shows signs that they’re contaminated. Your vehicle’s owner’s manual often will recommend how long that interval should be.
First, let’s look at the engine air filter. Your vehicle’s manufacturer will offer guidelines on how often you should change the engine air filter as a matter of routine, by mileage or time interval.
If you see signs of engine air contamination, such as misfiring, an illuminated check engine light, smoke coming out of your tailpipe, or loss of power, you may need to have the engine air filter replaced sooner.
Next, the cabin air filter. Again, the vehicle manufacturer will suggest how often you should replace it. But if you notice excess dust in the cabin, on the dash, console or seats, a bad smell in the cabin, or lower air flow out the heating and cooling ducts, you should have us check to see if your cabin air filter needs replacing. In either case, we’ll make sure we replace your air filters - either engine or cabin - with ones that are right for your vehicle.
Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net
