A humming outdoor unit with a fan that will not turn is the call we get most in July in Twin Falls, ID, 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.
Warning Signs for AC Repair
Recognizing the warning signs early can save you time and money. Here are the most common indicators that it's time to call a professional:
- Room-temperature air from the registers even though the AC is running
- An iced-over evaporator coil or frozen refrigerant lines
- An AC that turns on and off every few minutes but never cools down the house
- Hissing or bubbling sounds that suggest a refrigerant leak
- Higher summer bills even though the house still feels warm and humid
- Water leaking around the indoor unit or from the ceiling below it
- The outdoor unit humming or clicking but the fan not spinning
- A hot electrical smell or a tripped breaker whenever the air conditioner kicks on
Don't Wait for a Total Failure
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. If you notice any of these signs, call (208) 208-1936 for a prompt inspection.
