FAQ: How Often Should I Change My AC Filter?

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One of the most important—and most cost-effective—things you can do to keep your air conditioning system in tip-top shape is to change the air filter regularly during the warm weather season. A dirty filter not only shortens the life of your cooling system, but can also cost you additional money on your monthly energy bill. Your air conditioner has to work harder for the same result when it has to push air through a web of dust and dirt.

According to the U.S. Department of Energy, keeping a clean AC filter can save you up to 15 percent on your summer cooling bills.

When to Change Your AC Filter

If you’re asking yourself “how often should I change my AC filter,” the answer depends on a few key factors:

  • The type of cooling system you have
  • Whether you have pets
  • This season’s temperatures

The more the blower runs, the more dust and dirt circulate through the system and get caught in the filter. A good rule of thumb is to change your AC filter at the beginning of the season and again every three months while temperatures remain warm. You’ll want to change your AC filter more frequently if you have pets or if someone in your household has allergies, asthma, or another breathing disorder.

Air conditioner filters, unlike furnace filters, can be found in a variety of locations. Some are located in the air conditioning unit itself, others in the duct system, and some are even situated in the ceiling. This disparity is one good reason to have your local HVAC specialist handle changing your filter for you. They will change it as part of the regular, recommended preseason maintenance call. Annual air conditioner maintenance not only keeps your system clean, but can help identify potential problems before they have a chance to become expensive repairs or shut down your system entirely.

Your regular air conditioning contractor can also show you how to change your AC filter so you can do so on your own between service calls.

Call Michael Bonsby HVAC for All of Your AC Needs in Maryland & Washington, DC

Making sure that your air conditioner filter is clean doesn’t have to be difficult or confusing. At Michael Bonsby Heating and Cooling, we can help you maintain your cooling system so that it serves you well for years to come. We can provide you with annual air conditioner maintenance and have an experienced technician show you how to change your own AC filter in between visits, so you don’t have to pay a professional to do it every three months.

To learn more about our AC maintenance plans or to schedule an appointment for your home in Maryland, call us at 301 990-7970. We serve homeowners in Gaithersburg, Bethesda, Clarksville, Ellicott City, and all over the Montgomery County, MD and nearby NW Washington, DC area.

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