An outside unit that hums while the fan stays still is the classic summer service call in New Braunfels, TX, 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.
Heating trouble instead? See Furnace Repair.
Warning Signs for AC Repair
Catching these issues early helps you avoid costly problems. Watch for these telltale signs:
- Water leaking around the indoor unit or from the ceiling below it
- Rising electric costs paired with a sticky, uncomfortable house
- Room-temperature air from the registers even though the AC is running
- Frost or ice forming on the copper lines or the indoor coil
- The outdoor unit humming or clicking but the fan not spinning
- Hissing or bubbling sounds that suggest a refrigerant leak
- An AC that turns on and off every few minutes but never cools down the house
- Breaker trips or a burning odor at startup
Act Before It Gets Worse
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 (830) 202-5230 for a fast inspection.
