AC & Air Duct Mold Removal in Riverview, FL

My Riverview house is newer. Why would the AC grow mold?

Riverview grew fast, from 71,050 residents in 2010 to 107,396 in 2020, and the median home was built in 2006, with only about 7.3 percent of units predating 1980. Newer systems are good at removing humidity, which also means they produce a steady stream of condensate. If the drain line clogs, the pan overflows. If the house is closed up through a long summer, surfaces inside the cabinet can stay damp. Duct runs in a hot attic can sweat where insulation has gaps. EPA's advice is to keep indoor humidity below 60 percent and keep drip pans clean and drain lines flowing.

My street flooded during Helene. What about the ductwork?

On Parkway Circle along the Alafia River, homes took up to five feet of water during Helene in 2024, and residents said it was higher than usual. If floodwater reached return grilles, low ducts or the air handler, EPA's post-disaster guidance applies: when a home couldn't be dried within 24 to 48 hours, assume mold growth. EPA also says duct insulation that got wet can't be cleaned effectively and should be removed and replaced. An HVAC contractor should evaluate the air handler itself before it runs. Rebuilding or structural repairs in a Special Flood Hazard Area need a permit from Hillsborough County Development Services.

What will the work cost, and who does what?

Angi reports a typical Tampa-area range of $3,225 to $10,750 for mold remediation in HVAC systems. The spread reflects how much duct needs replacing, whether growth reached the blower and coil, attic access, and how much other flood-damaged material is involved. The remediation company contains, removes and cleans; an HVAC contractor repairs or replaces mechanical parts. If you want a clearance check afterward, Florida's s. 468.8419 means it should come from a mold assessor who didn't do the removal.

One local note

About 8 percent of Riverview's housing units are mobile homes, where ducts often run beneath the floor. If a mobile home smells musty at the floor registers, check the underbelly and skirting area for moisture and mention the home type when you call.