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Common Causes of Air Conditioning Odors

The air coming from your air conditioner isn’t supposed to have a smell, so if it smells moldy or musty you probably need the help of a trusted HVAC technician. Here residential HVAC contractors at Sierra Air share a look at the common causes of air conditioner odors and how to get rid of them.

Causes of Air Conditioning Odors

Air conditioning odors can be caused by one or more of the following:

  • Excess Moisture in the Ducts or Vents — High humidity levels can result in excess moisture collecting in the air ducts and vents. The combination of darkness and moisture allows mold to grow unnoticed. If you can smell it, chances are it’s starting to spread in the ductwork.