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Fire & Water - Cleanup & Restoration

Why Mold Grows in HVAC Air Ducts

6/1/2021 (Permalink)

Mold in Air Duct You can find mold growth in the humid and dark areas of your HVAC system.

Mold can grow in most areas of commercial buildings in DeLand, Florida, especially if they provide the right conditions. Its effects are dangerous for building materials, causing severe damage if left untreated. HVAC systems circulate mold around the building and provide the humid conditions it needs to thrive. HVAC cleaning is especially important for commercial buildings to prevent the growth of unwanted mold.

The Conditions for Mold Growth in HVAC Systems

You can find mold growth in the humid and dark areas of your HVAC system, such as:

  • The drip pan
  • The AC evaporator coils
  • The air ducts


Mold thrives in moist environmental conditions where it can find a host with the right nutrients. The dust in the ducts provides mold with nutrients and the dark, humid environment gives it the preferable conditions to grow. If the drip pan and AC evaporator coil are not cleaned regularly, they can also provide fungus the essential conditions for growth. It is important to conduct routine HVAC cleaning to prevent these parts from becoming worn or damaged.


Mold Prevention for HVAC Systems
To prevent mold growth on HVAC systems, make sure the air filters are routinely cleaned or replaced. HEPA filters are capable of filtering out the smallest air particles, making them ideal for filtering mold spores. Regular professional HVAC maintenance is also an essential part of mold prevention. It is recommended that this be done twice a year for commercial buildings. Routinely inspect your HVAC system for mold on air vents. Cleaning vents regularly will also prevent additional mold particles from circulating through your HVAC system.
Regular HVAC cleaning is necessary for mold prevention for commercial buildings and should be done by a professional mold cleaning service at least twice a year. If you have mold damage in your building, it is likely the mold is traveling through your HVAC system. Good filtration and regular maintenance can prevent mold growth and make your commercial building a cleaner, health-friendly environment.

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