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How Often Should I Replace My Air Filter?

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Air filter replacement is the single most important maintenance task you can do yourself, and it has a huge impact on your HVAC system’s performance for the Wake County, Raleigh and Fuquay Varina area homes.

Here’s what to know:

Standard Recommendation Is Monthly

Most standard 1-inch filters should be replaced every 30 days during heavy use months like summer, when your AC runs constantly. Checking your filter monthly and replacing it when it looks dirty is the best approach for most homes.

Your Home’s Conditions Matter

Homes with pets, smokers, high dust levels, or family members with allergies may need filter changes every two to three weeks. Conversely, if you live alone with no pets and don’t run your AC much, filters might last 60 to 90 days.

Thicker Filters Last Longer

If you have a higher-end system with a 4-inch or 5-inch media filter, these typically last three to six months instead of one month. Always follow the manufacturer’s recommendations for your specific filter type.

Dirty Filters Cause Serious Problems

When filters get clogged, your system has to work much harder to pull air through, which increases energy bills, reduces cooling performance, can freeze up the evaporator coil, and puts unnecessary strain on the blower motor that can lead to expensive repairs.

Filter Changes Are Cheap Insurance

Quality air filters cost just a few dollars, making them incredibly inexpensive compared to the repair bills and efficiency losses that result from neglecting them. Setting a monthly reminder on your phone ensures you never forget this simple but critical task.

Have more questions about HVAC filters or maintenance?

Call Dawson’s HVAC service experts at 919-887-8284 today or contact us online with any questions!

Serving all of Wake County including Fuquay and Raleigh and parts of Harnett and Johnston counties.