Grinding, banging or squealing from the unit usually means a failing motor, loose belt, or debris in the blower.
Turn the system off at the thermostat and call a specialist. Noise rarely resolves itself and often leads to a bigger failure.
Typical fix cost in Winston-Salem: $200-$1,600. Do not attempt work on live systems - get a licensed specialist on it.
| Item | Range |
|---|---|
| Diagnosis | $75-$150 |
| Repair | $200-$1,600 |
If there is risk of damage, safety hazard or no service at all, treat it as an emergency and act now. Otherwise schedule a standard visit.
Regular maintenance catches most of these early - see the maintenance checklist in the emergency guide.