How often does the air filter for my heating and air conditioning system need to be changed?
Posted on January 2, 2008 by johnwatkins
Are the return air vents in your house covered with dirt? If so, you’re not cleaning or replacing your filter often enough!Here’s a question we get asked on a regular basis; how often should I replace the air filters and my furnace?
You should replace or clean the filter once a month. With forced air furnace [...]
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