If you suspect mold in your AC or ducts, EPA says not to run the system, because it could spread mold through the house. In Tampa homes the cause is usually moisture at the air handler, a clogged condensate line, a dirty drain pan or wet duct insulation, and that has to be corrected or the growth returns. Call the number on this page to be connected with a local mold remediation company in Tampa.
Start by turning the system off
EPA's mold cleanup guidance is direct: do not run the HVAC system if you know or suspect it is contaminated, since it could blow mold through the building. In a Tampa summer that is a hard ask, so plan for portable fans or a short stay elsewhere while the system is checked. Do not let anyone talk you into running it to dry things out.
Why Tampa systems grow mold
An air conditioner pulls water out of humid air all day. That water collects on the evaporator coil, drips into a drain pan and leaves through a condensate line. When the line clogs with algae or sludge, the pan overflows into the closet, attic or ceiling, and the cabinet stays wet. EPA tells homeowners to keep AC drip pans clean and drain lines flowing and to hold indoor humidity below 60 percent. Its duct-cleaning page adds that substantial standing water or debris in a drain pan is a problem needing immediate attention.
Signs worth calling about
- A musty smell that starts when the air handler cycles on.
- Water around the air handler, a rusted pan or a tripped float switch.
- Stained ceiling drywall below an attic unit.
- Visible growth on supply registers, the blower or the coil housing.
What EPA says about cleaning ducts
| Part of the system | What EPA says |
|---|---|
| Sheet metal ducts | Substantial visible mold inside them is a reason to consider cleaning. |
| Wet or moldy duct insulation | Cannot be cleaned effectively and should be removed and replaced. |
| Sealants | Should never be used on wet liner, over actively growing mold or over debris. |
| Biocides | None are registered for internally insulated ducts. Ask to see the label of anything proposed. |
| Partial cleaning | Skipping a contaminated component can re-contaminate the whole system. |
What to expect from the company
Ask the provider to show you the mold it says is there, and expect it to address the cause, not just the ducts. EPA also notes that duct cleaning has never been shown to prevent health problems, so be wary of a pitch built on health promises. If the system has to be opened, mold-damaged insulation cut out, or coil and pan problems repaired, an HVAC contractor may need to work alongside the mold company. Under Florida law a separate assessor, not the remediator, should do any clearance check.
Typical cost
Angi reports a typical range of $3,225 to $10,750 for mold remediation in HVAC systems in Tampa. Price rises with how far the growth has spread into ductwork, how much duct insulation has to be replaced, and whether the air handler sits in a tight attic or closet.
AC & Air Duct Mold Removal questions from Tampa homeowners
Can I keep running my AC while I wait for help?
Can moldy flex duct or duct board be cleaned?
Will spraying a biocide or sealant fix it?
How do I keep mold from coming back in my Tampa AC?
Related mold services in Tampa
Helpful guides
AC & Air Duct Mold Removal in nearby cities and towns
Hillsborough County
Pinellas County
Pasco County
Manatee County
Sarasota County
Polk County
Sources
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