Why Is My AC Tripping the Breaker?
An AC that repeatedly trips the breaker is usually caused by a dirty air filter (system overworks and draws too much current), a failing compressor drawing excessive amperage, a short in the wiring, a bad capacitor, or a grounded compressor. Replace the filter and reset the breaker once. If it trips again, stop resetting it and call a pro — repeated tripping can be a fire hazard.
THE DETAILS
A dirty filter makes the system work harder than designed, drawing more electrical current than the breaker can handle.
A failing compressor draws excessive amperage as it struggles to start or run, which trips the breaker as a safety measure.
A bad capacitor can cause the compressor to draw locked-rotor amps (very high current) when trying to start, immediately tripping the breaker.
Wiring issues such as loose connections, damaged wire insulation, or a short circuit can cause tripping. These are safety hazards.
Do not keep resetting the breaker if it trips more than twice. Repeated tripping can overheat wiring and create a fire risk.
🔧 WHEN TO CALL A PRO
If the breaker trips more than once after replacing the filter, call a pro immediately. Electrical issues are safety hazards and should not be DIYed.