An outside unit that hums while the fan stays still is the classic summer service call in Charlottesville, VA, and the cause is usually a failed run capacitor. That inexpensive component starts the compressor and fan, fades for years without complaint, and then quits under peak load. It is far from the only suspect, though. Contactors pit and stop passing clean power, condenser fan bearings dry out, small refrigerant leaks drain away cooling capacity, and evaporator coils ice over when a clogged filter strangles airflow.
When the heat goes out, see Furnace Repair.
When to Call for AC Repair in Charlottesville
Spotting the early warning signs lets you act before the problem gets expensive. Here are the most common indicators that it's time to call a professional:
- Room-temperature air from the registers even though the AC is running
- The outdoor unit humming or clicking but the fan not spinning
- Rising electric costs paired with a sticky, uncomfortable house
- The system short-cycling every few minutes without cooling the house
- Puddles near the air handler or water stains on the ceiling beneath it
- Hissing or bubbling sounds that suggest a refrigerant leak
- A burning smell or repeated breaker trips when the AC starts
- An iced-over evaporator coil or frozen refrigerant lines
Early Action Saves Money
Most HVAC failures start small, a weak capacitor, a squealing blower, a system that runs a little longer each week. At the first hint of a problem, call (434) 622-1744 for a fast inspection.
