Mulberry is an inland Polk County city, so mold in an air conditioner here nearly always comes from the system's own condensate and the area's humid air, not flooding. A clogged drain, a wet pan or sweating duct insulation are the usual culprits. Call the number on this page to be connected with a local mold remediation company in Mulberry.

Can I clean the mold out of my AC myself?
Some of it. Swapping a dirty filter, flushing a slow condensate line through its cleanout and wiping light spotting off a register are reasonable homeowner jobs. Growth inside the air handler, on the blower wheel or coil, or inside the ducts is different. Disturbing it can spread spores through the house, and EPA advises against running a system you suspect is contaminated until it has been dealt with. EPA also says duct insulation that is wet or moldy cannot be cleaned effectively and should be replaced, and that no biocides are registered for use inside insulated ducts, so a spray-and-go approach won't fix the problem.
Why does this keep happening every summer?
Because the system makes water. In a long, humid central Florida summer, an air conditioner pulls gallons of moisture from indoor air each day. That water drips off the coil into a pan and out through a small PVC line. Algae and debris build up in the line, the pan fills, and the cabinet stays damp. Ducts running through a hot attic add another source: where insulation is thin or torn, cold metal or plastic sweats. Keeping the drain clear and indoor humidity under 60 percent, as EPA recommends, does more to stop repeat growth than any treatment.
What does it cost, and who checks the work?
Angi reports a typical Tampa-area range of $3,225 to $10,750 for mold remediation in HVAC systems, which is the closest published local benchmark. The amount of duct to replace, coil and cabinet condition and attic access set the price. If you want testing before or after, Florida law requires that the assessor and the remediator on a structure be separate companies for 12 months. Check either one's license on DBPR's online licensee search.

A local note
Mulberry is a small Bone Valley city built around phosphate mining, about 30 miles from Tampa. If remediation leads to new ductwork, a new air handler or drywall repairs, ask the City of Mulberry which office handles building permits for your address before work starts. For health questions, the Florida Department of Health in Polk County lists indoor air quality among its environmental health services; the state's guidance is to dry wet materials within 24 hours after water gets in.
AC & Air Duct Mold Removal questions in Mulberry
Can I keep running my AC while I wait for help?
Should I have the air tested before calling anyone?
What indoor humidity should I aim for?
Can the company that removes the mold also do the clearance test?
More mold services in Mulberry
AC & Air Duct Mold Removal nearby
Sources
- EPA: Mold Cleanup in Your Home
- EPA: A Brief Guide to Mold, Moisture and Your Home
- EPA: Should You Have the Air Ducts in Your Home Cleaned?
- Florida Statutes s. 468.8419, Prohibitions; penalties (Florida Senate)
- Florida DBPR Mold-Related Services FAQs
- Angi: How Much Does Mold Remediation Cost in Tampa, FL?
- Florida Department of Health: Mold (air quality)
- Wikipedia: Mulberry, Florida
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