Diagnosis
That buzzing is typically from the compressor or condenser fan, which can vibrate if dirty or if components are loose.
How to Fix It
Here's how to quiet it down: 1. Unplug the fridge and pull it out from the wall. 2. Vacuum the condenser coils and fan area at the bottom back to remove dust and debris. 3. Check if the fan blades are hitting anything or if the fan motor is wobbly—tighten any loose screws. 4. Ensure the fridge is level; use a wrench to adjust the front leveling legs so it sits firmly on the floor.
If That Didn't Work
The compressor itself might be failing or have worn mounts, causing vibration. Listen closely—if the buzz is constant and loud, a professional might need to assess the compressor.
Heads Up
Refrigerators often cycle louder at night when the house is quiet, but persistent buzzing shouldn't be ignored as it can lead to bigger issues.