Refrigerator Making Noise

Quick answer

A noisy refrigerator often needs cleaning, leveling, or part replacement. Start by checking the floor and back coils for debris. If the noise continues, replace worn components like the condenser fan or compressor.

Confirm the symptom

• Unusual humming, buzzing, or clicking sounds
• Noise coming from the back or bottom of the fridge
• Noise increases when the fridge is running

Tools and prep

• Screwdrivers (flathead and Phillips)
• Flashlight
• Level
• Vacuum with brush attachment
• Rubber pads or leveling feet
• Work gloves
• Plug in a surge protector if testing electrical components

Step-by-step troubleshooting

1. Check Floor and Leveling
   Do: Ensure the refrigerator is on a flat, stable surface. Adjust leveling feet if needed.
   Observe: The fridge may rock or tilt if uneven.
   Means: An unlevel fridge can cause vibrations and noise.
   Next: If the fridge is level, move to the next step.
2. Clean Condenser Coils
   Do: Use a vacuum to clean dust and debris from the condenser coils at the back or bottom of the fridge.
   Observe: Reduced noise after cleaning indicates dirty coils were the issue.
   Means: Dust on coils restricts airflow and causes the compressor to work harder.
   Next: If noise persists, proceed to the next step.
3. Inspect Fan Motors
   Do: Locate the condenser and evaporator fans. Check for obstructions or worn blades.
   Observe: A squealing or grinding noise suggests a faulty fan motor.
   Means: Worn fan bearings or obstructions can create noise.
   Next: If the fan is faulty, replace it.
4. Check Compressor
   Do: Listen for loud humming or knocking sounds from the compressor area.
   Observe: A loud, continuous hum or knocking may indicate a failing compressor.
   Means: A failing compressor can cause excessive noise and may need replacement.
   Next: If the compressor is faulty, consider professional help.
5. Tighten Loose Parts
   Do: Inspect and tighten any loose screws or panels on the fridge.
   Observe: Noise stops after tightening.
   Means: Loose parts can vibrate and create noise.
   Next: If noise is resolved, you're done. Otherwise, continue.
6. Test Thermostat and Start Relay
   Do: Unplug the fridge and check the thermostat and start relay for damage or wear.
   Observe: Damaged components may need replacement.
   Means: Faulty electrical components can cause irregular operation and noise.
   Next: Replace damaged parts if identified.

Common causes

Parts matching

Common parts needed for a noisy refrigerator include:

• Condenser coil cleaning kit
• Replacement fan motor
• Leveling feet or rubber pads
• Screws and brackets
• Thermostat or start relay

Purchase OEM parts for compatibility and reliability.

When to call a professional

• The noise persists after cleaning coils and tightening parts
• You hear loud knocking or humming from the compressor
• You're unsure about electrical components or part replacement
• The refrigerator is under warranty and you don't want to void it

FAQ

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