What Actually Gets Trapped in my HVAC Filters?

February 20, 2019


You might think that your HVAC filter only captures small dust particles, but there's actually a lot more to it than that. In fact, all of the airborne debris in a home has the potential to clog your filters — but what exactly does that debris contain? Allow us to introduce you to a few of the usual suspects:


Allergens are a big issue for most homeowners during springtime. Most quality filters will capture the majority of plant-pollens that enter your home. That's why it's always a good idea to keep a close eye on your filters at the beginning of the year. You definitely don't want those microscopic particles getting inside your ducts.

If you're experiencing allergy symptoms, while inside, you may want to have your HVAC system inspected for leaks. Additionally, you might also want to try using a hypo-allergenic filter on your air return opening for even better results.


Most indoor dust captured in your filter is usually made up of dead skin particles — and It's not something you want to spread around through your ventilation system. It’s best to always change your filter periodically to keep your system running efficiently. Additionally, check your floor vents for excessive dust buildup.

If happen to see any visible dust inside your return vent when changing filters, then it's time to have your ducts serviced. Furthermore, if any debris enters your coils, it can cause extensive damage to your system.

Inorganic Materials

Some of the buildup on your filters comes from inorganic dusts. These fine powders that come from outside your home can be quite dangerous to your health. The inorganic dusts that can cause damage to your lungs include, but are not limited to:

  • Rock dust

  • Rine dirt

You might not have enough inorganic dusts in your home to make a significant impact on your health, but it's nice to know that your filter helps capture those fine powders before they linger in your unit..

Give Us a Call

At Mitch Wright Plumbing, Heating & Air, we are here for all of your heating and air conditioning needs, which is why we offer 24/7 emergency services. For more information on the services we provide, visit us on the web or give us a call at (901) 795-9044.


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