An outside unit that hums while the fan stays still is the classic summer service call in Bentonville, AR, 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
Catching these issues early helps you avoid costly problems. Here are the most common indicators that it's time to call a professional:
- Rising electric costs paired with a sticky, uncomfortable house
- Frost or ice forming on the copper lines or the indoor coil
- Water leaking around the indoor unit or from the ceiling below it
- Room-temperature air from the registers even though the AC is running
- Rapid on-off cycling that never brings the temperature down
- A hiss or gurgle from the lines, a common sign of leaking refrigerant
- A hot electrical smell or a tripped breaker whenever the air conditioner kicks on
- A condenser fan that sits still while the outdoor unit hums
Act Before It Gets Worse
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. At the first hint of a problem, call (479) 457-8755 for a fast inspection.
