How to remove mold from AC vents safely: see why HVAC mold requires pro remediation, how to stop spores from spreading, and key preventive steps.
A musty smell drifts up through the floorboards. A home inspector's report flagged mold on the joists. An allergist asking whether you've checked beneath your house. Crawl space mold often announces itself indirectly, because the space itself is out of sight and, for most homeowners, out of mind.
What happens down there does not stay…
The smell hits when the AC kicks on, musty, damp, unmistakably wrong. Or you notice dark dust gathering around your vents faster than it should. Or a mold remediation company just finished your crawl space and told you the HVAC system needs attention, too.
Mold in air ducts is one of the more misunderstood problems…