Repair Videos

Sub-Zero Wine Cooler Evaporator Coil Replacement

September 2, 2026 1 min read 6:10 video

In this video, Max from MAX Appliance Repair restores a Sub-Zero dual-zone wine cooler with a sealed-system refrigerant leak. Both evaporator coils and the filter-drier were replaced. Because this was a custom installation with the condensing equipment located in a separate basement mechanical room, the system was pressure-tested with nitrogen, evacuated, and carefully charged based on actual system performance.

Work Performed

Replaced both evaporator coils
Installed a new filter-drier
Recovered the existing refrigerant
Pressure-tested the system with nitrogen
Evacuated and recharged the custom refrigeration system
Verified temperatures and system performance
Included up to a three-year warranty on the qualifying sealed-system repair

Sub-Zero and Custom Refrigeration Expertise

This repair was completed on a Sub-Zero 427RG 2 dual-zone wine cooler with its condensing equipment located in a separate basement mechanical room. Learn more about our independent Sub-Zero refrigerator repair in the Bay Area and Bay Area refrigerator repair services and premium residential appliance repair.