Tempstar
Mechanical Vibration
Furnace vibrates excessively or rattles 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
Unbalanced blower wheel, Loose furnace mounting or cabinet panels, Flexible gas line or ductwork contacting cabinet, Worn Tempstar blower motor bearings
How to Fix / Troubleshooting
Safety: Turn off power before tightening or adjusting components.
- Step 1 – Tighten panels: Check all access doors and sheet metal panels for loose screws. Tighten as needed.
- Step 2 – Inspect blower assembly: Remove blower and check that the wheel is centered and secure on the shaft. Tighten set screws.
- Step 3 – Check clearances: Ensure gas piping, refrigerant lines, and ductwork are not touching the furnace cabinet in a way that can transmit vibration.
- Step 4 – Replace worn motor: If the blower motor shaft has play or makes grinding noises, replace the Tempstar blower motor.
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Repair Difficulty
Medium
3/5
Required Part
Tempstar Blower Wheel
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