An outside unit that hums while the fan stays still is the classic summer service call in Folsom, CA, 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
The sooner you notice these red flags, the easier and cheaper the fix. Keep an eye out for the following clues:
- Vents blowing air that is barely cooler than the room
- Ice on the refrigerant lines or a frozen indoor coil
- An AC that turns on and off every few minutes but never cools down the house
- A burning smell or repeated breaker trips when the AC starts
- A hiss or gurgle from the lines, a common sign of leaking refrigerant
- Water leaking around the indoor unit or from the ceiling below it
- The outdoor unit humming or clicking but the fan not spinning
- Rising electric costs paired with a sticky, uncomfortable house
Early Action Saves Money
A failing capacitor, clogged condensate drain, or dirty flame sensor rarely fixes itself and usually gets more expensive to address the longer it runs. At the first hint of a problem, call (279) 236-7586 for a fast inspection.
