Reading refrigerator noise in a Woodbury kitchen
Woodbury's open-plan kitchens make refrigerator noise unusually noticeable — there is nothing between the appliance and the family room to absorb it. That is a real advantage diagnostically, because homeowners here describe the sound precisely, and each sound maps to a small set of parts.
Noise from inside the freezer compartment, changing when you open the door, is nearly always the evaporator fan: a worn bushing chirps, a blade hitting accumulated frost grinds or ticks. Noise from behind or beneath the unit belongs to the condenser fan, the compressor, or something loose that fell into the coil area. Noise that comes in bursts every few hours is the ice maker, and buzzing at the water valve is the fill cycle.
The sound worth acting on quickly is a rhythmic click every two to five minutes accompanied by warming. That is the compressor start relay attempting and failing to start the compressor. Left alone, a failed relay can take the compressor windings with it, which turns a $265 repair into a sealed-system quote.