Everything I baked came out pale and slow. He put a thermometer in and showed me it was running well under what the dial claimed. Sensor rather than element, which he said is the usual answer and the cheaper one.
Alistair R. · Watertown
Sub-Zero · Rockport, Massachusetts
Rockport is as exposed as our coverage gets, and it shows in the condensers. A Sub-Zero coil here corrodes on a schedule that has nothing to do with how the unit has been used, and clearing it is maintenance rather than repair — but skipping it is what turns a clean unit into a failed one.
The brand, in general
Sub-Zero splits its cooling into two independent sealed systems on most built-ins, which is why a unit can hold a perfect freezer and drift warm on the fresh food side at the same time. That symmetry is diagnostic: it tells you the compressor is fine and sends you to the evaporator, its fan, and the defrost circuit that serves that half. The 500 and 600 series are still everywhere in Boston kitchens, and parts for both remain available, which is the question most owners actually want answered before they spend anything.
What we repair here
What people said afterwards
4.9out of 5
from 1,386 reviews across Greater Boston
Everything I baked came out pale and slow. He put a thermometer in and showed me it was running well under what the dial claimed. Sensor rather than element, which he said is the usual answer and the cheaper one.
Alistair R. · Watertown
A solid sheet of ice under the bottom basket and the drawer would barely open. He said it was not failing to cool, it was failing to clear frost, which was blocking its own airflow. Defrost heater replaced. Obvious once someone explains it.
Wilhelmina C. · Newton
Ours had started humming in a way it never had in ten years. He said a bearing going is genuinely out of character on this make and worth catching early. Fan assembly replaced, back to silent, and he explained why waiting would have cost more.
Marguerite T. · Watertown