Refrigerator making loud buzzing or humming noise from back

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

Steps:

• Level the unit: Use a level to adjust front feet so the fridge is stable and slightly tilted back. This can reduce vibration.
• Access rear panel: Remove the lower rear cover and inspect the condenser fan. Clear any dust, plastic, or wiring contacting the blades.
• Check fan motor: Spin the fan by hand; if rough or noisy, replace the motor.
• Inspect compressor mounts: Ensure rubber grommets are intact and that copper lines are not touching the cabinet, which can cause rattling. Gently adjust lines if needed.

Note: Some compressor hum is normal. If noise is extremely loud or accompanied by clicking, have a technician evaluate the compressor.