Refrigerator making loud buzzing or humming noise; noise from rear or bottom of unit.

Safety first: Unplug the refrigerator before accessing the rear panel or fan area. Keep hands clear of moving parts.

Step 1 – Isolate noise source:

• Listen at the back of the unit to determine if the noise is from the compressor or fan.

Step 2 – Inspect condenser fan:

• Remove the rear lower panel.
• Check the fan blade for contact with wires, insulation, or debris; clear any obstructions.
• Spin the blade by hand; if rough or loose, replace the condenser fan motor.

Step 3 – Check compressor mounting:

• Ensure the compressor mounting bolts or springs are secure.
• Some vibration is normal; adding vibration pads under the leveling legs can reduce noise.

When to call a technician: If the compressor itself is excessively loud or knocking, a sealed system issue may exist and requires professional evaluation.