Every storm season we get the same two calls: the July panic when a surge fries a control board that a 30-second breaker flip would have saved, and the sadder one — the flooded condenser someone re-energized before it dried. Both are preventable, and prevention takes about two minutes. Here is the whole thing as a tap-to-check list; screenshot it, share it with your neighbors, and if a named storm is coming, do the "Before" section when you bring in the patio furniture.
Tap items to check them off. Worth asking about before next season: a dedicated HVAC surge protector — one of the cheapest insurance policies a Florida homeowner can buy. We'll measure what any storm did to your system — measured, never guessed.
Why the breaker, not the thermostat?
The thermostat only tells the system to rest — it stays energized. When the grid flickers during a storm (and in Central Florida, it will), voltage spikes travel straight into energized equipment. Control boards, capacitors, and compressor windings are the casualties, and a compressor is the most expensive component in the machine. The breaker disconnects all of it. That single flip is most of the value of this checklist.
The flooded-unit rule is the one people break
If standing water reached your outdoor unit — even a few inches — the safe assumption is that water got where it should not be. Energizing wet electrical components is how a survivable flood becomes a dead system. Leave the breaker off and have it inspected first; we will measure what the water actually touched. See the National Weather Service hurricane safety guide for whole-home storm prep, and the CDC's heat guidance for staying safe if you lose cooling in the aftermath.
After any storm, if the system restarts but sounds different — grinding, buzzing, repeated breaker trips — shut it down and call us at (407) 398-5929. A surge can wound a system without killing it, and wounded systems fail in August. Worth asking about before next season: a dedicated HVAC surge protector, one of the cheapest insurance policies a Florida homeowner can buy.