A humming outdoor unit with a fan that will not turn is the call we get most in July in Grand Rapids, MI, 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 Grand Rapids
The sooner you notice these red flags, the easier and cheaper the fix. These are the signals our technicians see most often:
- Rising electric costs paired with a sticky, uncomfortable house
- Bubbling or hissing noises that point to a possible refrigerant leak
- An AC that turns on and off every few minutes but never cools down the house
- Breaker trips or a burning odor at startup
- Warm or room-temperature air blowing when the thermostat calls for cooling
- An iced-over evaporator coil or frozen refrigerant lines
- Water leaking around the indoor unit or from the ceiling below it
- Clicking or humming outside with no fan movement
Act Before It Gets Worse
Most HVAC failures start small, a weak capacitor, a squealing blower, a system that runs a little longer each week. If you notice any of these signs, call (616) 207-2855 for a prompt inspection.
