Before the storm
- Schedule spring maintenance so your system is in good shape before the season starts. See AC maintenance.
- Photograph the outdoor unit and its data plate (model and serial number) for insurance records.
- Secure loose items in the yard that could hit the unit in high winds.
- Consider a whole-home surge protector. Power flickers during storms can damage control boards and compressors.
- Pre-cool the house a few degrees cooler before power is likely to go out.
- Turn the system off at the thermostat and the breaker if you lose power, to protect it from surges when power is restored.
If water reaches the outdoor unit
Don't turn the system back on if the outdoor unit or indoor equipment was submerged. Floodwater can damage electrical components, motors and controls, and running a flooded unit is a safety risk. Have a licensed contractor inspect it first. In many cases, flooded equipment needs replacement, so document everything for your insurance claim. See AC replacement.
After the storm
- Inspect the outdoor unit for debris, damage or bent fins before turning it on.
- Clear branches and leaves from around the unit.
- Wait a few minutes after power is restored before restarting the AC.
- Watch for warning signs: unusual noises, burning smells, warm air or water leaks.
Generators and your AC
Most portable generators can't run a central air conditioner. Whole-home standby generators sized for your AC are a separate project for a licensed electrician. Never run a portable generator in a garage or near windows.
If your system isn't working right after a storm, request AC repair using the form.