A humming outdoor unit with a fan that will not turn is the call we get most in July in Saratoga Springs, NY, 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. Here are the most common indicators that it's time to call a professional:
- Frost or ice forming on the copper lines or the indoor coil
- An AC that turns on and off every few minutes but never cools down the house
- Water dripping from the indoor unit or showing up on the ceiling below
- Rising electric costs paired with a sticky, uncomfortable house
- Clicking or humming outside with no fan movement
- Warm or room-temperature air blowing when the thermostat calls for cooling
- Breaker trips or a burning odor at startup
- A hiss or gurgle from the lines, a common sign of leaking refrigerant
Don't Wait for a Total Failure
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. At the first hint of a problem, call (518) 201-6284 for a fast inspection.
