A humming outdoor unit with a fan that will not turn is the call we get most in July in Chapel Hill, 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.
Warning Signs for AC Repair
Recognizing the warning signs early can save you time and money. Keep an eye out for the following clues:
- Bubbling or hissing noises that point to a possible refrigerant leak
- Cooling bills climbing while the house stays sticky and warm
- Frost or ice forming on the copper lines or the indoor coil
- The system short-cycling every few minutes without cooling the house
- Warm or room-temperature air blowing when the thermostat calls for cooling
- Clicking or humming outside with no fan movement
- A hot electrical smell or a tripped breaker whenever the air conditioner kicks on
- Water dripping from the indoor unit or showing up on the ceiling below
Don't Wait for a Total Failure
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. Don't wait, call (984) 256-2394 and we'll take a look right away.
