What could cause strange odors from an HVAC system?

Strange odors emanating from an HVAC system can often be traced back to mold growth within the system. When moisture accumulates in the HVAC components, such as ducts or air handlers, it creates an ideal environment for mold and mildew to thrive. This organic growth can produce musty or unpleasant smells as spores are released into the air that circulates throughout the system.

Preventive measures, such as ensuring adequate drainage and keeping components dry, are critical for minimizing mold growth. Regular inspections and maintenance can help identify and rectify moisture issues before they lead to odor problems. Understanding this connection between moisture, mold, and odors is essential for HVAC troubleshooting and maintaining indoor air quality.