A humming outdoor unit with a fan that will not turn is the call we get most in July in Plymouth, MN, 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.
Heating trouble instead? See Furnace Repair.
When to Call for AC Repair in Plymouth
Recognizing the warning signs early can save you time and money. Watch for these telltale signs:
- An iced-over evaporator coil or frozen refrigerant lines
- A hot electrical smell or a tripped breaker whenever the air conditioner kicks on
- Rapid on-off cycling that never brings the temperature down
- Room-temperature air from the registers even though the AC is running
- Rising electric costs paired with a sticky, uncomfortable house
- Water dripping from the indoor unit or showing up on the ceiling below
- Clicking or humming outside with no fan movement
- A hiss or gurgle from the lines, a common sign of leaking refrigerant
Act Before It Gets Worse
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. Call (763) 247-5064 at the first sign of trouble.
