Direct answer: Before a hurricane, secure the outdoor condenser, clear loose debris nearby, and shut the system off at the breaker as the storm approaches, not just the thermostat. After the storm, never restart a unit that was underwater, get it inspected first, and wait 30 minutes after power returns before switching a dry system back on.

At a Glance

Before the StormSecure condenser, clear debris, shut off at breaker
Pre-Cool Target70-72°F for a buffer during outages
If the Unit FloodedNever restart, get a licensed inspection first
After Power Returns, No FloodWait 30 minutes before switching AC on

Hurricane season runs through November, and most people think about their roof and their windows before they think about their AC. The condenser sitting outside is just as exposed, and what you do in the hours before and after a storm changes whether it survives.

Before a Storm: Secure the Outdoor Unit

New installs Rick puts in already come with a tie-down kit anchoring the condenser to its pad, but if your system's older or you're not sure, it's worth checking before storm season gets going. A condenser that isn't secured can shift or tip in high wind, which stresses the refrigerant lines and the electrical connections even if the unit itself doesn't get damaged.

Clear the area around it too. Patio furniture, potted plants, trash cans, anything loose nearby can turn into a projectile that damages the coils or fan blades. Walk your yard the day before a storm and move anything that could end up airborne.

Shut It Off Before the Power Does

Pre-cool the house before the storm hits, get it down to 70 to 72 degrees so you've got a buffer if the power goes out for a while. Once you've done that, shut the system off at the breaker as the storm gets close, not just at the thermostat. A power surge during an outage or when the grid comes back up hits a system that's live on the breaker a lot harder than one that's been shut down.

If you want to cover the outdoor unit, do it after it's off, never while it's running, and use something breathable that's actually tied down. A tarp that blows loose becomes its own hazard.

If You're in a Flood-Prone Spot, Talk to Rick About the Pad

A condenser sitting a few inches higher on an elevated pad can be the difference between a unit that survives a storm surge and one that floods and needs a full replacement. If your property has flooded before, or you're close to water, this is worth a conversation before the season gets going, not after the first storm surge finds out the hard way.

After the Storm: Don't Just Flip It Back On

If your system was underwater at any point, do not turn it on. Submerged electrical components are a real electrocution and fire risk, not a minor inconvenience. Leave the breaker off and get a licensed tech out to inspect it before anyone tries to restart it.

If the system wasn't flooded and power's back, give it about 30 minutes after the power comes back on before switching the AC on. That gives the refrigerant time to settle and takes some of the load off the compressor on startup, which matters after the system's been sitting without power.

Surge Protection Is Worth Having Before the Season, Not After

A whole-system surge protector installed at the condenser is cheap insurance against the kind of power spike that comes with a storm-related outage and restoration. It's a lot less than replacing a compressor board that took a hit it didn't need to.

Call Vanguard Pros if:

  • Your outdoor unit was underwater or partially submerged during a storm
  • The system won't come back on after power is restored and 30 minutes have passed
  • You're not sure whether your condenser is properly secured going into hurricane season
  • You're in a flood-prone area and want to talk through raising the pad before storm season peaks

Common Questions

Should I turn off my AC before a hurricane?
Yes. Shut it off at the breaker, not just the thermostat, once the storm is close. A power surge during an outage or when the grid comes back hits a system that's still live on the breaker much harder than one that's already shut down.
Is it safe to run my AC after a hurricane if the power is back?
Only if the system wasn't flooded. Wait about 30 minutes after power returns before turning it back on, that gives the refrigerant time to settle and eases the load on the compressor at startup.
What if my outdoor unit was underwater during the storm?
Do not turn it on. Submerged electrical components are a real electrocution and fire risk. Leave the breaker off and get a licensed tech to inspect it before anyone tries to restart it.
Do I need a tie-down kit for my condenser?
New installs come with one already anchoring the unit to its pad. If your system is older or you're not sure, it's worth checking before storm season, since an unsecured condenser can shift or tip in high wind and stress the refrigerant lines and electrical connections.