dirty air filters

Importance of Air Filters

We talk about it all the time, and this post will remind you again: regularly changing out your air filters is the easiest, least expensive way to extend the life of your HVAC. The good news is that City Plumbing will give you a FREE 1” filter when we service your home with a Fall Clean & Check. (More on that later.) Let’s talk air filters!


With the coronavirus upon us, face masks are practically a new fashion trend. But these masks offer the perfect analogy for your air filters. They essentially do the same thing, by keeping potentially harmful particles from continuing to circulate in your home.

When the existing air in your home is sucked through the filter, all that bad stuff gets caught. We’re talking about dust, hair, pet dander, dirt, even things causing bad odors. Naturally, the smaller the holes in the filter, the more it will catch. The now-filtered air is pumped back through your system, cooled or heated to your desired temperature, and then reintroduced to your home.

However, a filter, especially one that’s clogged with dirt and dust, makes your unit work harder! That’s because the system is working to pull air through the filter. Not only is that hard on your entire system, and may reduce its lifespan, it also costs you money heating or cooling your home!

So…. that’s why changing the filter regularly is so important.


HEPA stands for “High Efficiency Particulate Air.” These air filters are made of micro-glass fibers and can catch even finer particles. Other filters are given a MERV rating to indicate their filtration rate. We write more about this in other posts. Be sure to evaluate the filter that is right for you.


The experts at City Plumbing do a lot more than plumbing. That includes HVAC work. Call us today for our Fall Clean & Check. It’s a good idea to give your system a tune-up before switching from A/C to heat as we get into the cooler months. Make an appointment today at 432-366-2401. Give us a call, and we’ll come running!

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