Why is my Sub-Zero freezer not cold enough?
Usually a failed evaporator fan, a defrost fault that has iced the coil, or a refrigerant problem. Each is tested before anything is replaced.

HomeFreezer repair
Full-size freezers, columns and freezer drawers, repaired where they stand.
Call (602) 962-2732 to book a visit
Quick summary
Sub-Zero freezer repair covers the freezer side of a Sub-Zero refrigerator, freezer columns and freezer drawers, and certified technicians check the fan, the defrost cycle and the condenser before repairing it, call (602) 962-2732.
A compressor that never rests usually means a condenser clogged with dust, a fan that is failing, or low refrigerant. All three are tested before a part is quoted, as on every visit for Sub-Zero refrigerator repair.
A freezer that will not get cold often has a failed evaporator fan, while frost that keeps returning points to the defrost cycle, as on the calls in Anthem Sub-Zero refrigerator repair. Uneven cold on the shelves is an airflow fault like those in Sub-Zero fridge repair for Grayhawk homes. Clicking or grinding comes from a fan motor or the compressor starting.
Drawers and columns get the same diagnosis, with temperatures logged before and after. If the ice has stopped too, see Sub-Zero ice maker repair.
Usually a failed evaporator fan, a defrost fault that has iced the coil, or a refrigerant problem. Each is tested before anything is replaced.
A dusty condenser, a failing fan or low refrigerant keeps the compressor running. Cleaning or a single part often fixes it.
Yes. Freezer drawers, columns and the freezer side of a built-in are all serviced in place.