Noise Coming from Refrigerator

Quick answer

A noisy refrigerator can be caused by a variety of issues, from loose parts to compressor problems. Start by checking for loose items inside the fridge and ensuring the unit is level. If the noise persists, unplug the refrigerator and inspect the condenser coils, fan, and compressor for damage or debris.

Confirm the symptom

• Unusual humming, buzzing, or rattling sound from the refrigerator
• Noise is consistent or intermittent but noticeable
• Noise occurs even when the refrigerator is not running

Tools and prep

• Screwdrivers (flathead and Phillips)
• Flashlight
• Level
• Cleaning brush or vacuum with brush attachment
• Work gloves
• Plug the refrigerator into a grounded outlet

Step-by-step troubleshooting

1. Check for Loose Items
   Do: Open the refrigerator and freezer compartments. Look for loose items, ice, or containers that may be vibrating or knocking against the walls.
   Observe: Any loose items making noise when the refrigerator is running
   Means: Loose items can cause rattling or knocking sounds
   Next: Remove or secure the loose items and listen for the noise to stop.
2. Ensure the Refrigerator is Level
   Do: Use a level to check if the refrigerator is sitting evenly on the floor. Adjust the leveling legs if necessary.
   Observe: The refrigerator tilts to one side
   Means: An uneven refrigerator can cause the compressor to work harder and make noise
   Next: Adjust the leveling legs and check if the noise decreases.
3. Inspect Condenser Coils
   Do: Locate the condenser coils (usually at the back or bottom of the refrigerator) and clean them with a brush or vacuum. Make sure the coils are free of dust and debris.
   Observe: Dusty or clogged condenser coils
   Means: Dirty coils can cause the compressor to work harder and make noise
   Next: Clean the coils and monitor the noise level.
4. Check the Fan
   Do: Listen for the sound of the fan running. If the fan is making a loud noise, it may be damaged or have debris stuck in it.
   Observe: Loud or unusual fan noise
   Means: A faulty fan can cause noise and affect cooling performance
   Next: If the fan is damaged, it may need to be replaced.
5. Unplug and Inspect the Compressor
   Do: Unplug the refrigerator and locate the compressor. Check for any visible damage or signs of wear.
   Observe: Visible damage or unusual wear on the compressor
   Means: A faulty compressor can cause loud noises and may need to be replaced
   Next: If the compressor is damaged, contact a professional technician.
6. Check for Refrigerant Leaks
   Do: Look for any signs of refrigerant leaks, such as oil stains or a hissing sound. If you suspect a leak, do not attempt to repair it yourself.
   Observe: Oil stains or hissing sounds near the compressor or coils
   Means: Refrigerant leaks can be dangerous and require professional repair
   Next: Contact a professional technician for refrigerant leak repairs.
7. Inspect the Evaporator Fan Motor
   Do: If the evaporator fan motor is making noise, it may be worn out or have debris. Check the motor and clean or replace it if necessary.
   Observe: Loud noise from the evaporator fan motor
   Means: A faulty evaporator fan motor can cause noise and affect cooling performance
   Next: If the motor is damaged, it may need to be replaced.
8. Check the Start Relay or Capacitor
   Do: Inspect the start relay and capacitor for any signs of damage or wear. These components help the compressor start and can cause noise if they are faulty.
   Observe: Visible damage or wear on the start relay or capacitor
   Means: A faulty start relay or capacitor can cause the compressor to make noise
   Next: If the start relay or capacitor is damaged, contact a professional technician.

Common causes

Parts matching

If you need to replace any parts after diagnosing the issue, here are some common parts that may be needed:

• Fan
• Compressor
• Refrigerant and repair kit
• Evaporator fan motor
• Start relay or capacitor

When purchasing replacement parts, make sure to check the refrigerator's model number and specifications to ensure compatibility.

When to call a professional

• If the noise is coming from the compressor and it is damaged
• If you suspect a refrigerant leak
• If the start relay or capacitor is damaged
• If the evaporator fan motor is faulty and needs replacement
• If the noise persists after checking all the common causes and troubleshooting steps

FAQ

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