How Often Should You Change Furnace Filters

How Often Should You Change Furnace Filters

How often you change your furnace / HVAC’s air filter depends on various factors, including the type of filter in your HVAC unit.

Most pleated air filters last from three to six months, depending on the material, manufacturer, and frequency of use.

It is important to follow the instructions included with your HVAC system for the recommended filter changing schedule.

Other Factors that Impact How Frequently You Should Change Your Furnace’s Air Filter:

Home Size

Large homes circulate larger amounts of air. That means the filter may need to be changed more often than filters in smaller homes.

Air Quality

If you live in a city, or near a busy road, the air in your home may be more polluted with dust and debris. This can make your air filter work harder. It will need to be changed more often.


Common household pets may shed and track in dirt from outside. Because of this, you’ll need to change your filter regularly to keep it clear of pet hair and dander.

Allergies or Asthma

Homeowners with severe allergies, asthma, or other respiratory conditions should consider changing the air filter more often to prevent flare-ups.

Live in the Rockland County NY, Orange County NY or Bergen County NJ area and are uncertain about your furnace air filter? Call CV.

We’ll inspect your furnace, perform maintenance, and change the air filter for you.

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