An outside unit that hums while the fan stays still is the classic summer service call in Longmont, CO, 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.
When to Call for AC Repair in Longmont
Catching these issues early helps you avoid costly problems. Keep an eye out for the following clues:
- Water dripping from the indoor unit or showing up on the ceiling below
- A hiss or gurgle from the lines, a common sign of leaking refrigerant
- A burning smell or repeated breaker trips when the AC starts
- Rapid on-off cycling that never brings the temperature down
- Rising electric costs paired with a sticky, uncomfortable house
- An iced-over evaporator coil or frozen refrigerant lines
- A condenser fan that sits still while the outdoor unit hums
- Room-temperature air from the registers even though the AC is running
Act Before It Gets Worse
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. Don't wait, call (970) 602-4958 and we'll take a look right away.
