During the peak of a hot Florida summer, our phones ring off the hook. About 60% of these emergency calls trace back to the same two small electrical components: the capacitor and the contactor. These parts live inside your outdoor condenser unit and take a beating from the extreme heat. When they fail, your compressor can't start, leaving you without cooling.
What is an AC Capacitor?
Think of the capacitor as a temporary battery that gives your compressor and fan motor the electrical surge they need to start running. Over time, heat causes the capacitor to swell and lose its charge. A failed capacitor is easy to diagnose: your outdoor unit might hum, but the fan won't spin, and the system won't cool. AC Capacitor Replacement is a quick, same-day fix.
The Role of the AC Contactor
The contactor is a switch that closes when your thermostat calls for cooling, sending high-voltage power to the compressor and fan. Over time, the silver contacts get pitted, burnt, or clogged with bugs (which are attracted to the electrical hum). If the contactor fails, your AC won't turn on or, worse, won't turn off. We recommend replacing contactors during a AC Contactor Replacement check.
Other Common Electrical Failure Points
- AC Fan Motor Replacement: A weak capacitor can strain the fan motor, causing it to overheat and fail.
- Blower Motor Replacement: The indoor blower motor moves air. Failed relays or capacitors can stop it from circulating cool air.
- Wiring Faults: Loose connections or rodent damage can cause short circuits and trip breakers.
We test capacitors and contactors during our regular tune-ups. Replacing a weak capacitor costs $150 during a tune-up, saving you from a $300+ emergency service call in the middle of a hot summer night.
Book Your Electrical Repair in Lake Nona, FL
Get your AC running today. We offer same-day electrical diagnostics and parts replacement across Lake Nona, FL 32827. We serve Laureate Park, Eagle Creek, Medical City, Narcoossee, and St. Cloud. Call (321) 285-1700 for fast service.