Refrigerator making loud buzzing or humming noise from the back.

Safety first: Unplug the refrigerator before touching any moving parts or tubing.

Buzzing from the back is often fan or compressor related.

• Inspect condenser fan: Remove the rear lower panel and check if the fan blade is rubbing against wires, insulation, or debris. Clear any obstructions.
• Check fan bearings: Spin the fan by hand; if it wobbles or feels rough, replace the fan motor.
• Secure tubing: Look for copper lines touching each other or the cabinet. Gently reposition and secure with foam or clips to reduce vibration.
• Compressor noise: If the compressor itself is loud or rattling, monitor whether the noise is constant. A failing compressor requires professional replacement.