Mold in HVAC systems poses significant health risks, including allergies, respiratory issues, and more. The spores in your system get blown through your ductwork, permeating your entire home. What causes mold in HVAC systems, and how can you get rid of it? Keep reading to learn what you need to know.

How Mold Grows in HVAC Systems

Mold thrives on moisture, so it often forms on your evaporator coil or your drain pan. It’s most common in units that are either too large or too small for their homes. This causes issues with condensation, which can lead to mold.

Mold in your drain pan may be caused by blockage in the drain line. If the moisture created by your system can’t be successfully removed, it sits in the pan, stagnating — and eventually growing mold.

Mold may also grow in your ductwork or vents. If your roof or plumbing leaks, it can allow moisture into your ducts. That, combined with a buildup of dirt and other debris, can then lead to mold.

What to Do About HVAC Mold

If you think there’s mold growth around your vents or your AC unit, don’t panic. Call a certified mold inspector to have it tested to see if it really is mold. Look for other signs of mold as well, such as a backed-up drain pan or water around your unit. You may also notice a musty smell coming from your vents whenever you turn on your AC.

If it turns out you do have a problem with mold in HVAC, call your HVAC technician. They’ll make sure the infestation is safely eliminated and that mold is returned to safe levels within your home. Without expert removal, any mold that’s left can simply grow back.

To prevent HVAC mold growth, clean your ductwork and registers annually and check your drain pan once a month for blockage. Finally, be sure to schedule your annual HVAC inspection. With proper, regular maintenance, you can keep mold in HVAC at bay.

If you suspect you have mold in your HVAC system, contact us at Mowery Heating, Cooling and Plumbing. We keep Indianapolis’ home-comfort systems running smoothly and efficiently.

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