An outside unit that hums while the fan stays still is the call we get most in July in Durham, NC, 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.
Signs You Need AC Repair in Durham
Spotting the early warning signs lets you act before the problem gets expensive. Watch for these telltale signs:
- Frost or ice forming on the copper lines or the indoor coil
- An AC that turns on and off every few minutes but never cools down the house
- Water dripping from the indoor unit or showing up on the ceiling below
- Rising electric costs paired with a sticky, uncomfortable house
- Hissing or bubbling sounds that suggest a refrigerant leak
- A condenser fan that sits still while the outdoor unit hums
- Warm or room-temperature air blowing when the thermostat calls for cooling
- A burning smell or repeated breaker trips when the AC starts
Act Before It Gets Worse
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. Don't wait, call (984) 213-5892 and we'll take a look right away.
