Your AC After a Hurricane or Flood in Greenville, NC

Your AC after a hurricane or flood

If water reached the outdoor unit, the air handler or the ductwork, leave the system off and have it checked before you run it. Floodwater can short the electrical parts and leave silt and contamination in the coil and the ducts. If it only lost power, a quick look and a careful restart is usually enough.

Updated October 29, 2026 · Sources listed at the end

Before you turn it back on

Look at the outdoor unit. Did water reach the base or the electrical panel on the side? Is it buried in branches or knocked off its pad?
Look at the air handler. In a crawlspace or a closet, check for a water line on the walls or the cabinet.
Check the ducts if they run under the house. A crawlspace that took on water usually means wet or contaminated duct insulation.
If any of those got wet, keep the breakers off and call. If none did, clear debris from around the outdoor unit and restore power at the breakers.

Leave the electrical panel on the outdoor unit closed. Capacitors hold a charge even with the power off.

Purple lightning branching through storm clouds above a line of dark trees — Summer storms bring most of the year's rain. September is the wettest month at the Greenville station. Photo: Jeremy Thomas / Unsplash

Why it matters here

At the Greenville NOAA station, June through September bring 44% of the average year's rain, and September is the wettest month at 7.3 inches (1991-2020 averages). That is also the peak of hurricane season. Parts of Greenville and the towns downstream sit in the Tar River floodplain, and a slow river crest can follow a storm by days.

When the power is out

Never run a generator inside the home or garage, even with doors open. The CDC says to keep it outside, more than 20 feet from windows, doors and vents. Carbon monoxide has no smell.
Keep the refrigerator and freezer closed. Ready.gov says a refrigerator keeps food cold for about four hours and a full freezer about 48 hours.
Get people at risk somewhere cool. In the humid days after a storm a house without power heats up fast. Dialing 2-1-1 can help you find an air-conditioned place, according to the CDC.
When power returns, turn the system on at the thermostat once. If it trips a breaker, leave it off.

Insurance and paperwork

Take photos of the water line on the equipment before anything is moved, and keep the technician's written diagnosis. Whether a homeowner's or flood policy covers the equipment depends on the policy; ask your insurer. If the system has to be replaced, North Carolina still requires a permit for the new equipment (G.S. 160D-1110).

Questions Greenville homeowners ask

Can I run my AC after the outdoor unit was underwater?

Not until a technician has checked it. Floodwater can damage the electrical parts and the fan motor, and running it wet can make the damage worse. Keep the breakers off.

Should I cover my outdoor AC unit before a hurricane?

Turn it off at the breaker before the storm arrives and clear loose items from around it. If you cover it, take the cover off before you run the system again, and check the manufacturer's instructions first.