Furnace inducer motor runs but there is a loud whistling or whooshing noise at the vent pipes.
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: Do not modify venting without following manufacturer and code requirements. Improper venting can cause carbon monoxide hazards.
Steps to check:
- Inspect terminations: Outside, check that intake and exhaust terminations are clear and properly spaced.
- Check joints: Inspect visible PVC vent joints for gaps or loose fittings that may cause whistling.
- Remove temporary obstructions: Clear any leaves, snow, or debris near the vent openings.
When to call a technician: Persistent vent noise may indicate design issues or internal restrictions that require professional evaluation.
Repair Difficulty
Required Part
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