Every motorist knows that a car has an engine air filter that needs to be kept clean if you want your engine to perform at its best, but what is a cabin filter and what does it do? Does it have any effect on your car’s performance? A cabin filter is installed in your car’s heating and air conditioning system. It filters outside air that enters the cabin.

The cabin filter is probably the only maintenance item that has no effect on your car’s performance, so why do you have to worry about it? There are a few reasons: first, when the cabin filter is plugged up, it causes reduced airflow from the vents, even with the blower motor running at full speed. A dirty cabin filter can also cause unpleasant smell from the air conditioner. Health concerns are the most important issue, as the air you and your passengers breathe inside your car passes through the cabin filter. Dirt on the cabin filter can promote mold, fungi, and bacteria growth on its surface. This can cause allergic reactions and other health issues.

Keeping the cabin filter clean is especially important if you’re driving with kids. Is it expensive? Cabin filter replacement can be done at  repair shop. Recommended replacement intervals vary between 15,000 and 30,000 miles. Some car manufacturers recommend cleaning the cabin filter every 12-18 months.