AquaCal Mechanical Noise from Fan or Compressor

Heater is running but making loud grinding, squealing, or rattling noises.

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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

Worn fan motor bearings, Loose fan blade or mounting hardware, Compressor mounting pads deteriorated, Debris contacting fan blade

How to Fix / Troubleshooting

Safety first: Turn off power before inspecting moving parts. Do not insert hands or tools near a running fan.

  • Inspect fan blade: Remove the top grille and check that the fan blade is tight on the motor shaft and not contacting the shroud.
  • Remove debris: Clear any leaves, twigs, or foreign objects from the fan area.
  • Check motor bearings: Spin the fan by hand with power off. Roughness or grinding indicates a failing motor that should be replaced.
  • Compressor mounts: Inspect rubber mounting pads under the compressor. Replace if cracked or missing to reduce vibration noise.
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Repair Difficulty

Medium 3/5

Required Part

Condenser Fan Motor
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