A humming outdoor unit with a fan that will not turn is the classic summer service call in Minneapolis, 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.
For winter breakdowns, see Furnace Repair.
When to Call for AC Repair in Minneapolis
Spotting the early warning signs lets you act before the problem gets expensive. Keep an eye out for the following clues:
- Higher summer bills even though the house still feels warm and humid
- A condenser fan that sits still while the outdoor unit hums
- A hot electrical smell or a tripped breaker whenever the air conditioner kicks on
- Water leaking around the indoor unit or from the ceiling below it
- A hiss or gurgle from the lines, a common sign of leaking refrigerant
- An AC that turns on and off every few minutes but never cools down the house
- Ice on the refrigerant lines or a frozen indoor coil
- Warm or room-temperature air blowing when the thermostat calls for cooling
Act Before It Gets Worse
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. Call (763) 247-4119 at the first sign of trouble.
