What is the loud humming or rattling from my refrigerator?

Condenser fan bearings have a shorter life in La Jolla than they do a few miles inland, and it is not a coincidence. The fan sits directly behind the grille, pulling room air across the coil for its entire service life. On the ocean side of town that air carries salt aerosol, and salt reaches the motor shaft and the bearing along with everything else. What owners hear first is not a failure but a change: a slightly louder afternoon, a rattle that comes and goes, a whir that was not there last year. That is the window where a fan motor is a straightforward part swap. Once the bearing seizes, the condenser stops being cooled, head pressure climbs, and the repair moves into a different price bracket entirely.

The other noises worth naming, because they get confused with each other. A sharp rattle that changes when you touch the grille is debris — packaging, a bag clip, pet hair matted into the fin pack — and it is often solved in five minutes. A rhythmic ticking or gurgling from inside the cabinet after a cooling cycle is refrigerant and water in the drain line, and it is normal. A buzzing from inside the freezer that stops when you open the door is the evaporator fan blade catching ice, which means you have a defrost problem, not a fan problem. And a deep hum that travels through the cabinetry and seems to come from the whole wall is compressor mounts, common on older 600 and 700 series units and more audible in the open-plan kitchens that are everywhere in this town.

If that matches what your appliance is doing, say so when you call — it tells us which parts to bring, and most of these are finished in one visit.