Lightning Strike Fried Your AC? A Treasure Coast Surge Damage Guide

The run capacitor is the most common casualty — it's a voltage-sensitive component already working hard in our climate, and a spike pushes it over. Control boards come next: modern equipment runs on sensitive electronics that die from surges direct strikes don't even need. The compressor itself is the expensive end of the spectrum — a strong surge can damage its windings, and at that point you're pricing a compressor replacement against a system replacement.

The signature of surge damage is the cluster: the AC dies in the same hours as a thunderstorm, often alongside other electronics in the house. If the outdoor unit hums, clicks, or trips the breaker right after a storm passes, surge is the leading suspect until testing says otherwise.

Post-storm no-cooling has other suspects too — a tripped breaker or disconnect from the momentary outage, a condensate float switch that tripped, or simple thermostat confusion. The diagnosis sequence rules those out first: power at the disconnect, breaker state, thermostat call, then the components. Metered testing of the capacitor, contactor, and board tells the story in minutes.

For insurance purposes, documentation matters: the timing (storm, outage, failure), the failed components with photos, and the written diagnosis. Surge damage claims live or die on that paper trail — equipment that died 'sometime after the storm' reads very differently than equipment that failed within hours of a documented outage.

A whole-system surge protective device installed at the equipment costs a small fraction of the compressor or board it protects — and unlike a power strip downstream of the panel, it clamps the spike before it reaches the components that matter. Given Florida's strike density and the restoration spikes that follow every outage, it's the highest-value accessory in HVAC.

Grounding and disconnect condition complete the picture: a surge protector on a compromised ground is a talisman. We verify both when we install, and pair the device with the rest of storm prep — strapping, drainage, and a post-storm restart procedure that protects the compressor from the outage's dirty seconds.

Surge damage from lightning is typically treated as a sudden, accidental loss — often covered, subject to your policy's terms and deductible. The claim's strength depends on the documentation: timing evidence, failed-component photos, and a written diagnosis that names the surge as the cause rather than guessing at it.

If the damage is severe — compressor plus board on an aging system — the replacement-versus-repair decision arrives quickly. We put both numbers in writing and provide the insurance-ready scope either way. And every replacement we do after a surge gets the device that prevents the next one, because once is a fluke; twice is a pattern.