top of page

signs of mold in your air ducts

How can you tell that there is mold in your HVAC system? Thankfully, some of the signs are relatively easy to spot.

Visible Mold

The most straightforward sign is, of course, actual mold. If you see fuzzy white fibers (that remind you of cotton balls) or a stain that looks suspicious – it's could possibly be mold.


Moisture is what causes mold growth. Did you know that if your AC has retained moisture, it is going to create added moisture inside the house? 


how to spot mold

When mold is present in a large enough volume, it will begin to emit a distinctive smell. Many people describe the smell of mold as musty or earthy. The smell of mold may be unpleasant, however, it makes larger mold infestations easier to detect.



By far the most significant risk of having mold in your ducts is the health effects it can cause for your family. While breathing mold spores can cause symptoms in virtually anyone, some people have an allergy to mold spores that makes them especially sensitive to moldy ducts. Likewise, mold can exacerbate the symptoms of anyone in your family with pre-existing respiratory problems.



Allergy symptoms

Allergy symptoms such as itchy, watery eyes; coughing and sneezing; and difficulty breathing can be signs of mold if they occur indoors, especially if they are more severe in rooms that are air-conditioned. 

bottom of page