As an HVAC system operates, the air flows through an air filter which traps dust, dirt, hair, pollen, dander, and other small particulates. If the air filter is not regularly replaced, it can become ...
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Changing your AC's air filter is crucial during poor air quality—here's how to do it right
If your home has central AC, changing its air filter is a cheap, simple maintenance project that has a huge impact on your comfort, health, and your system's efficiency. Yet, many homeowners don’t ...
Add Yahoo as a preferred source to see more of our stories on Google. It's easy to forget, but we wouldn't recommend it. Getty Images Changing your air filter is one of those out-of-sight, out-of-mind ...
Martha Stewart on MSN
How often should you change your HVAC filter—and why it matters
A clogged filter makes your system work harder.
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