Flooded HVAC systems usually need replacement, not drying out, FL HVAC Team warns

FL HVAC Team is urging Gulf Coast homeowners to treat flood-damaged air conditioners, ductwork and water heaters as replacement decisions, not quick dry-out fixes, as hurricane season continues in Tampa Bay. The guidance follows industry standards that warn hidden corrosion, electrical damage and refrigerant leaks can surface months after flood exposure.

Why it matters: - Floodwater can leave HVAC equipment looking usable while causing hidden damage that shows up later as leaks, corrosion or failure. - The wrong repair choice can also spread contamination through ductwork or create safety risks with gas appliances and water heaters. - Homeowners in Hillsborough and Pinellas counties are still in the part of hurricane season when flood planning matters most.

What happened: - FL HVAC Team is telling homeowners not to treat a flooded air conditioner as a dry-it-out repair. - The company is pointing to guidance from the Air-Conditioning, Heating, and Refrigeration Institute, the industry’s manufacturing body. - FL HVAC Team says homeowners should photograph indoor and outdoor equipment now and save model and serial numbers before an insurance or disaster claim is needed. - FL HVAC Team says homeowners can call (813) 603-6398 in Hillsborough County and (727) 394-3842 in Pinellas County.

The details: - AHRI says flood-damaged heating and cooling equipment and systems should be replaced rather than repaired. - AHRI says inspection and replacement work on flooded equipment should be handled by qualified heating and cooling contractors, not homeowners. - If the refrigerant circuit remained intact, AHRI says the entire system should be cleaned, dried and disinfected. - AHRI says a contractor should check electrical and refrigeration connections on both the indoor and outdoor units, including all control circuits. - AHRI says the repair-or-replace decision should be made case by case with a qualified professional. - If floodwater moved either unit of a split system even slightly, refrigerant leaks become more likely and the job can shift toward major repair or full replacement. - For central forced-air systems, AHRI says duct insulation that contacted floodwater should be replaced because it cannot be decontaminated. - AHRI says the ductwork itself should be cleaned, dried and disinfected, and that thorough work requires disassembling it. - AHRI says gas valves and controls are especially vulnerable to water damage and may not show obvious problems afterward. - AHRI says any gas appliance that may have been reached by floodwater should be checked by a qualified contractor. - AHRI advises replacing any water heater exposed to floodwater, regardless of whether it runs on gas, oil or electricity. - AHRI says both gas and electric water heaters can suffer corrosion at the pressure relief valve after flood exposure. - AHRI says internal insulation can hold moisture long enough to corrode the tank from the outside even after the unit appears to be working normally. - AHRI says if either the indoor or outdoor unit must be replaced on a system rated below 13 SEER, both units must be replaced with equipment designed to work together. - AHRI says mismatched indoor and outdoor units place undue stress on the system, run at least 30% less efficiently and fail prematurely. - FL HVAC Team says FEMA assistance may be available to help finance replacement of flood-damaged HVAC equipment after a declared disaster. - FL HVAC Team says the current season offers a practical window for a system check, a duct inspection and a review of what a household’s equipment would require if water reached it.

Between the lines: - The core message is financial as much as it is technical: a cheaper partial repair after flooding can create higher costs later through inefficiency, repeat breakdowns and contamination cleanup. - The guidance also suggests homeowners should decide before a storm, not after one, because flood damage changes the replacement math for systems, ductwork and water heaters. - The low-visibility risks matter most here: corrosion inside sealed components and damage to controls can take months to reveal themselves.

What's next: - Homeowners in flood-prone parts of Tampa Bay are likely to see more emphasis on pre-storm documentation, inspection and replacement planning as hurricane season continues. - Any homeowner with suspected flood exposure should use a qualified contractor to assess the equipment before restarting it. - If replacement is needed, AHRI’s matching rules and efficiency guidance can affect both the immediate quote and the long-term operating cost.

The bottom line: - Flooded HVAC equipment is usually not a simple cleanup job. In most cases, the safer and more durable answer is replacement, not a restart.