The homeowner noticed their Sub-Zero 642 built-in refrigerator was no longer holding temperature, with the fresh food compartment sitting at 50°F despite the thermostat being set to 38°F. Food was spoiling quickly and the compressor seemed to be running continuously without achieving the target temperature.
Our technician performed a full sealed system diagnostic and identified a refrigerant leak in the evaporator coil. We replaced the evaporator, installed a new filter drier, evacuated the system, and recharged it with the correct amount of R-134a refrigerant. After a 24-hour monitoring period, the unit was holding a steady 37°F in the fresh food section and 0°F in the freezer. The repair preserved the customer's investment in their premium Sub-Zero unit.
We are factory-certified for Sub-Zero repairs across Scottsdale and the Phoenix Metro area. Same-day appointments available.
