A humming outdoor unit with a fan that will not turn is the classic summer service call in Lebanon, PA, 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:
- A condenser fan that sits still while the outdoor unit hums
- Hissing or bubbling sounds that suggest a refrigerant leak
- Water leaking around the indoor unit or from the ceiling below it
- A hot electrical smell or a tripped breaker whenever the air conditioner kicks on
- Warm or room-temperature air blowing when the thermostat calls for cooling
- An AC that turns on and off every few minutes but never cools down the house
- Rising electric costs paired with a sticky, uncomfortable house
- An iced-over evaporator coil or frozen refrigerant lines
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. If you notice any of these signs, call (717) 200-9284 for a prompt inspection.
