Rick's Free Auto Repair Advice

Posts Tagged: cabin air filter

Do you need a new cabin air filter?

When to replace your cabin air filter The cabin air filter sits in in the air duct between the outside air intake and the blower fan. It’s sometimes called a pollen filter since its original purpose was solely for pollen removal. Few car makers thought that non-allergy sufferers would even want to filter out road dust. However, car makers quickly changed the name from pollen filter to to cabin air filter because owners didn’t think they needed to service the filter if they didn’t have pollen allergies. When the filters isn’t … Read More

Replace cabin air filter

Cabin air filter If your vehicle has a cabin air filter, check it at least once a year to make sure it’s not clogged. A clogged cabin air filter can reduce airflow across the air conditioning evaporator coil to the point where the evaporator  freezes over. The evaporator temperature sensor should kick in to shut off the flow of refrigerant, but the icing may have already started. That would cause a cool/no cool condition. A clogged filter not only reduces cooling, but causes the air conditioning system to work harder … Read More

Cabin Air Filter

Replace your cabin air filter Most new vehicles are now equipped with a cabin air filter. Its 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 … Read More


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