KitchenAid Compressor or Refrigerant Line Noise

Loud banging or knocking sound when the compressor starts or stops.

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

Loose refrigerant lines, worn compressor mounting grommets, internal compressor noise, lines contacting the cabinet.

Safety: Disconnect power before adjusting lines or mounts.

Inspect compressor mounts: Check the rubber grommets under the compressor. Replace if cracked or missing.
Secure tubing: Gently bend and reposition copper lines so they do not touch each other or the cabinet. Use foam sleeves or clips to prevent contact.
Check for cabinet resonance: Tighten any loose panels or brackets that may amplify noise.
Monitor: If noise persists and appears to come from inside the compressor, consult a professional; compressor replacement may be required.

Hard 4/5

Compressor Mounting Grommets

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