Goodman
Duct Resonance or High Static Pressure
Furnace is very noisy in the ductwork with whistling or rumbling sounds when running.
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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.
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Possible Causes
Closed or undersized registers, Undersized return duct, Loose duct joints, High blower speed
How to Fix / Troubleshooting
Safety: Use caution when accessing attic or crawlspace ducts.
Steps:
- Open registers: Ensure all supply and return registers are fully open.
- Inspect ducts: Look for loose or vibrating duct sections and secure them with screws and foil tape (not cloth duct tape).
- Adjust blower speed: On PSC motor models, consider reducing blower speed tap for heating if airflow is excessive (consult Goodman data plate for acceptable temperature rise).
If noise persists, a technician should measure static pressure and recommend duct modifications.
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Repair Difficulty
Medium
3/5
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