Are All Commercial Refrigerators Noisy?

Depending on the design, commercial refrigerators can have a lot of moving parts. The condenser fan, evaporator coils, and other components can all contribute to a noisy refrigerator. It will be louder if it has a refrigerator in addition to a fridge. When you add an ice maker to the mix, you have even more sources of noise.

Let's take a look at the various sources of noise. 

Ice Maker — As it makes ice, it makes a variety of gurgling, cracking, clicking, and buzzing sounds.
This is common and not cause for concern.

Refrigerator walls — As the temperature changes, the walls of your Commercial Refrigeration refrigerator expand and contract. This can result in unusual cracking, popping, and creaking noises. This is also natural and expected. 

Drip tray — This is where fun sounds like sizzling, dripping, and gurgling come from. You can safely disregard these noises.

The star of the show, as well as the one that makes most noise, is the compressor. It circulates coolant throughout the machine while also exhausting hot air. It is responsible for the majority of the work and thus remains on the longest, contributing to the variety of sounds heard.