Furnace produces a high-pitched squealing noise during operation.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety first: Turn off power before accessing the blower compartment.
Step-by-step checks:
- 1. Access blower assembly: Remove the lower front panel to expose the blower housing.
- 2. Inspect blower wheel: Check for debris, bent fins, or contact with the housing. Clean out dust and debris with a vacuum and soft brush.
- 3. Spin blower by hand: Rotate the wheel; if it feels rough, wobbles, or squeals, the motor bearings may be failing.
- 4. Check mounting hardware: Tighten any loose screws on the blower housing and motor mounts.
When to call a professional: If squealing persists, the blower motor or wheel may need replacement with Philco-compatible parts. This involves wiring and balancing and is best done by a technician.