A restricted cabin air filter can cause musty odors in the vehicle and impair airflow in the HVAC system, possibly causing interior heating and cooling problems. Over time, the heater and air conditioner may also become damaged by corrosion. In addition to trapping pollen, bacteria, dust and exhaust gases, the cabin air filter prevents leaves, bugs and other debris from entering the heating, ventilating and air-conditioning (HVAC) system.

Cabin air filters should not be cleaned and reinstalled. Instead, they should be replaced every 12,000 to 15,000 miles, or per the owner’s manual. Most filters are accessible through an access panel in the HVAC housing, which may be under the hood or in the interior of the car. An automotive service technician can help locate the cabin filter and replace it according to the vehicle’s owner manual. Some filters require basic hand tools to remove and install the replacement filter while others just require your hands.

To learn more about cabin air filters, view the Car Care Council’s Car Care Minute video or view the free digital Car Care Guide. Motorists may also order a free printed copy of the popular guide for their glove box.

The Car Care Council is the source of information for the “Be Car Care Aware” consumer education campaign promoting the benefits of regular vehicle care, maintenance and repair to consumers. For a copy of the council’s Car Care Guide or for more information, visit www.carcare.org.