A humming outdoor unit with a fan that will not turn is the call we get most in July in Murray, UT, 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.
For winter breakdowns, see Furnace Repair.
Warning Signs for AC Repair
Spotting the early warning signs lets you act before the problem gets expensive. Keep an eye out for the following clues:
- Warm or room-temperature air blowing when the thermostat calls for cooling
- Water leaking around the indoor unit or from the ceiling below it
- Rapid on-off cycling that never brings the temperature down
- Higher summer bills even though the house still feels warm and humid
- A burning smell or repeated breaker trips when the AC starts
- Hissing or bubbling sounds that suggest a refrigerant leak
- The outdoor unit humming or clicking but the fan not spinning
- Frost or ice forming on the copper lines or the indoor coil
Act Before It Gets Worse
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. At the first hint of a problem, call (385) 206-5852 for a fast inspection.
