Do I Really Need to Change My Cabin Air Filter?

Do I Really Need to Change My Cabin Air Filter

Many people do not know that they should be checking their cabin air filter on a regular basis. The cabin air filter is the part of your vehicle’s heating and cooling system that cleans the inside air from pollutants, dust, pollen, and more. This article will help you understand do I really need to change my cabin air filter so that you don’t put yourself at risk for health issues or other problems with your car.

Do I Really Need to Change My Cabin Air Filter?

A car’s cabin air filter gets clogged and can no longer do its job. The following reasons will tell you why you should replace the cabin air filter.


Pollution is a bad thing. Polluted air can make you sick. The filter in your car keeps this from happening. You should change the filter so it does not get polluted with the air outside of your car.

The most common reason to change your cabin air filter is because of pollution. The cabin air filter is a car part that separates fresh, clean air from the outside of the vehicle to be heated or cooled and distributed inside. Changing your air filter helps keep air pollution out of your car.

Check Out Top 7 Best Cabin Air Filters & Brands 


It is unlikely that you will find twigs or leaves in your cabin air filter because these are not as small as other objects and they would not be sucked into the filter. However, your air filter can clog with leaves, twigs, and acorns. It can happen if you park in a place with lots of trees. There are some things in your air system that can be a big problem. They need to be taken out right away.


Cabin air filters help reduce allergens in your car. Besides just dirt and pollutants, they also help. Change your cabin air filter at least annually and it will ensure that pollen from outside does not get into your vehicle. It is also important to replace the filter more often if you live in an area where there are a lot of trees or plants nearby.

If you live in an area with a large number of oak trees and/or experience high pollen levels (e.g., states that are mostly desert or timberland), it’s important to change your cabin air filter as allergens may build up and affect the quality of air for all drivers.

Reduced Efficacy

When your air conditioner’s air filter is clogged, the air conditioner will have to work harder. This means that it can be noisy or ineffective. It might take longer for your cabin to cool down during the summer when this happens.

Engine Strain

When your car is hot, the air conditioner has to work harder. Your engine also has to work harder. This makes it less efficient and uses more gas. If you have a clogged filter, there will be more gas used by the engine so it will use more energy.

Read More How Long Should Cabin Air Filter Last

Signs You Need to Replace the Cabin Air Filter

Poor Airflow

One of the most common problems is poor airflow. If the air filter is clogged, not much cool air will come in even if the fan is working. The same problem can happen with warm air if you are trying to run a heater. You may also hear more noise from your heating and cooling system.

Musty Odor Shows Up

If your car fan doesn’t work, then it could be your cabin air filter. You can tell because you will smell musty odors when you run the fan. This is often caused by mold and mildew building up in the HVAC system.

Condensation Build Upon the Windshield

Your car windows won’t be clear as quickly when you turn on the de-fog mode. And a clogging filter also allows more water to condense on the windshield.


The cabin air filter is often overlooked and forgotten about while replacing other components in a vehicle’s service. It is important to change it, however, as the filter can make all the difference in a car or truck’s performance.

Further Reading: