Tempstar
Indoor Mechanical Vibration / Noise
Tempstar indoor unit makes loud rattling or buzzing noises during operation
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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
Loose blower wheel set screw, Loose panel or ductwork, Debris in blower housing, Failing blower motor bearings
How to Fix / Troubleshooting
Safety first: Turn OFF power to the air handler/furnace.
Steps:
- 1. Tighten panels: Ensure all access panels are properly seated and screws are tight.
- 2. Inspect blower wheel: Access the blower and check that the wheel is centered and the set screw on the motor shaft is tight.
- 3. Remove debris: Clear any foreign objects from the blower housing.
- 4. Restart and test: Restore power and listen. If noise persists, motor bearings may be worn and require replacement.
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Repair Difficulty
Medium
3/5
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