Mold In AC Unit? How to clean mold in air conditioner – Mold Cleanup Atlanta – MoldStar Remediation

Mold In AC Unit? How to clean mold in air conditioner – Mold Cleanup Atlanta – MoldStar Remediation

Hi, I’m Jeremy with MoldStar Remediation and I am a Certified Microbial Consultant. You can find me on the web at You can call me at 404-989-9981.

If you have mold and moisture on and around HVAC vents, you’re probably wondering why it’s there, are you being exposed to mold contaminants, and what should you do about it. The most common cause of mold and moisture on and around HVAC vents is warm humid air in the room coming in contact with a cool surface….sort of like moisture condensates on a cold drinking glass on a hot summer day…It’s the same principle. When condensation forms on and around the HVAC vents, mold begins to grow.

The good news is that the mold that is on the HVAC vents is probably not enough to contaminate the air to any significant level. Also, the types of mold that are going to grow on these surfaces is probably not of the toxic variety and is likely an allergenic mold.

There are exceptions where mold can grow inside ductwork and HVAC components and this can contaminate the air with harmful molds. If you’re not sure, you can call MoldStar to have an air sample collected of the air being exhausted from your HVAC system to see if it is contaminated.

What should you do about it? You want to make sure you have sufficient insulation around HVAC ductwork and vents. This will discourage cold air from affecting building material outside of the ductwork. You can clean HVAC vents with some soapy water, a scrub brush, and rags. A 10 to 1 bleach solution can be sprayed on metal surfaces to sterilize any remaining mold contaminants.

Call MoldStar for your mold testing and mold remediation needs.

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