A Sub Zero refrigerator, like other appliances, doesn’t always stay quiet. You might hear a soft hum from the compressor or a little gurgle from the refrigerant. These sounds often mean the appliance is working properly. However, it can be hard to tell the difference between normal noises and those that might mean trouble. Let’s look at the different refrigerator sounds and signals an... https://sub-zero-appliance-repair.com/decoding-different-refrigerator-sounds-and-signals/