Rick's Free Auto Repair Advice

Cabin Air Filter

Replace your cabin air filter

Most new vehicles are now equipped with a cabin air filter. cabin air filter, charcoal cabin filter, pollen filterIts job is to keep pollen, dust, dirt, and leaves out of your car’s ventilation system and the cabin. Many of the factory filters are made with activated charcoal to remove outdoor odors.

Most cabin air filters are made from non-woven polypropylene fibers that are heat molded into a pleated pattern. The reason they use polypropylene fibers is because it has a positive charge that attracts the negatively charged dust and dirt particles.

So there’s not much difference between brands. Some have a types of cabin air filterscardboard frame, while others are simply molded to fit the filter tray. I’m not aware of any testing that shows that one style filters better than another, so you can buy the cheaper cabin air filter and see how long it lasts in your vehicle.

Regular versus charcoal cabin air filter

Some companies offer an upgraded cabin air filter with activated charcoal to absorb odors. If filtering out outdoor odors is important to you, buy a charcoal air filter.

Why you must replace your cabin air filter

Neglecting your cabin air filter is no different than neglecting clogged cabin air filteryour furnace filter. A clogged filter reduces airflow and that causes the blower motor to work harder. That can cause early motor failure and premature failure of the blower motor resistor. Plus, a clogged filter causes the AC to work harder and be less effective. So the AC will cycle on and off more often, provide less cooling and reduce your gas mileage.

What happens when the blower motor resistor burns out? Read this post.

© 2012 Rick Muscoplat


Posted on by Rick Muscoplat

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