A humming outdoor unit with a fan that will not turn is the call we get most in July in Clarksville, TN, 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.
When the heat goes out, see Furnace Repair.
Signs You Need AC Repair in Clarksville
Recognizing the warning signs early can save you time and money. Keep an eye out for the following clues:
- Rapid on-off cycling that never brings the temperature down
- Ice on the refrigerant lines or a frozen indoor coil
- A condenser fan that sits still while the outdoor unit hums
- Puddles near the air handler or water stains on the ceiling beneath it
- A hiss or gurgle from the lines, a common sign of leaking refrigerant
- A burning smell or repeated breaker trips when the AC starts
- Higher summer bills even though the house still feels warm and humid
- Vents blowing air that is barely cooler than the room
Don't Wait for a Total Failure
A failing capacitor, clogged condensate drain, or dirty flame sensor rarely fixes itself and usually gets more expensive to address the longer it runs. Call (931) 544-8277 at the first sign of trouble.
