Column Refrigerator Repair
SUB-ZERO OVER-AND-UNDER · BUILT-IN SERVICE
Sub-ZeroOver-and-UnderRepair
1,400+reviews
7 daysa week
Up to 1 yearwarranty
What we service
Sub-Zero Appliances We Service
Built-in, panel-ready and freestanding refrigeration, from full-size columns to wine storage and ice makers.
Full-Size Refrigeration
Wine, Undercounter & Ice
Reviews
What Our Clients Say
"The repair was quick and straightforward. The technician arrived on time and explained everything clearly."
Emily R.
"Good service from start to finish. The issue was fixed, and the price matched the estimate."
Michael T.
"Scheduling was easy, and the technician was polite and professional. I’m happy with the result."
Sarah L.
"The team was helpful and kept me updated. Everything has been working well since the repair."
James W.
Why us
Why Homeowners Choose Us
The upper refrigerator and lower freezer drawer share a compact built-in layout, so cooling and door alignment both matter.
We See This Every Day
Upper-cabinet airflow, freezer-drawer rails, defrost and ice systems are checked together. We diagnose the cause, not just the symptom.
OEM Parts on the Truck
Fans, defrost parts, drawer rails, gaskets and ice-system components are matched to the exact model before replacement.
Written Quote Before We Start
A firm price on site. It does not change once work starts.
Up to 1 Year Warranty
Parts and labor, in writing. Same fault inside that window and we return at no charge.
Built-In and Panel-Ready
Doors and drawers carrying custom millwork come off and go back without marking your cabinetry.
Same Day, 7 Days a Week
A warming refrigerator or freezer deserves prompt attention. Appointment availability is checked including weekends.
Our work
Recent Over-and-Under Refrigerator Repairs
Real Sub-Zero service examples from our completed repair visits.
1 / 3Recent repair
Freezer Airflow and Ice Maker Repair
Model: BI-36U/O
Symptom
The freezer was building up frost, food was not staying evenly frozen and the ice maker had stopped making ice.
What we found
The freezer fan was not moving enough cold air. Frost had spread around the rear and upper sections and frozen the door switch in its closed position. The ice maker had failed, and both retainers that hold the lower basket in place were damaged.
Repair
The freezer fan and ice maker were replaced, and the frost was removed. Both lower basket retainers were renewed before the compartment was reassembled. The service included checks of air circulation, the door switch and the ice-making cycle.
Parts and service
Freezer fan; ice-maker assembly; left and right basket retainers; frost removal; freezer maintenance.
Result
The freezer kept food evenly frozen again, and the ice maker completed a normal cycle. The drawer basket was secure, and the frost problem did not return during the final check.
1 / 5Recent repair
Sub-Zero 550 Defrost System Repair and Condenser Cleaning
Model: 550
Symptom
The refrigerator had started making a loud, unusual noise.
What we found
Frost had collected around the freezer light area, and the freezer's heater, thermostat and timer needed service access. Dust had also built up in the upper condenser compartment. The repair therefore covered frost control as well as cleaning the area that releases heat. The heater clears frost from the coil, the thermostat limits heater operation and the timer controls when defrost begins. Servicing these together addressed the frost-control system as a whole, while cleaning the dusty condenser dealt with a separate maintenance need.
Repair
The defrost heater, thermostat and timer were replaced at their service points, with attention to the wiring and the thermostat's position at the coil. The freezer covers were then restored, leaving the internal air path clear. Packed dust was removed from the upper condenser so it could release heat properly. The refrigerator was restarted and its running condition checked, with time allowed for both compartments to recover their normal temperatures after service.
Parts and service
Defrost heater; thermostat; defrost timer; condenser cleaning.
Result
The refrigerator was back in operation, and its running condition was checked after reassembly. Full cooling was allowed to recover over the next 24 hours so both compartments could settle back to normal.
1 / 2Recent repair
Door Gasket Replacement and Drain Maintenance
Model: 650/F
Symptom
Water and ice were collecting at the bottom of the refrigerator, and the doors no longer seemed to close with a good seal.
What we found
The old gaskets had lost their shape in several places and were letting warm air into the cabinet. Debris was also slowing drainage at the bottom. Together, poor sealing and slow drainage were contributing to moisture and ice buildup.
Repair
The worn door gaskets were replaced, and the drain area was cleaned and flushed. Accumulated ice was removed during maintenance. Both doors were then adjusted and checked for even contact around the new seals.
Parts and service
Refrigerator and freezer gaskets; drain cleaning; ice removal; maintenance; door adjustment.
Result
The doors closed firmly and evenly, and water drained away as it should. No fresh moisture appeared at the bottom during the final check, leaving the cabinet clean and dry.
1 / 2Recent repair
Fresh-Food Cooling System Repair on a Sub-Zero BI-36U/O
Model: BI-36U/O
Symptom
Food in the refrigerator was getting warm, even though the freezer was still cold.
What we found
The refrigerator display read 62°F while the freezer read 0°F, pointing to a problem in the fresh-food cooling section. The repair focused on the refrigerator evaporator and the small refrigerant tubing assembly connected to it. The large difference between the two displays made it important to separate the refrigerator fault from the freezer's operation. The evaporator and its capillary assembly are part of the fresh-food refrigerant circuit, so this required cooling-system work rather than a simple adjustment to the controls.
Repair
The refrigerator evaporator coil and capillary/heat-exchanger assembly were replaced as part of the cooling service. The procedure included removing air and moisture from the system, adding refrigerant, checking for leaks and testing the cooling system. The replacement assembly was connected with attention to the refrigerant tubing and service joints. A vacuum and recharge prepared the circuit for use, and leak and operating checks were part of confirming that the repaired section could cool the refrigerator again.
Parts and service
Refrigerator evaporator coil; capillary/heat-exchanger assembly; vacuum and refrigerant recharge; leak and operation checks.
Result
The refrigerator section began cooling normally after its cooling-system repair. The freezer remained cold, and the appliance was checked as both compartments returned to regular use.
1 / 4Recent repair
Major Refrigeration Component Service on a Sub-Zero 700TC 3
Model: 700TC 3
Symptom
The refrigerator and freezer needed service because their cooling performance was not satisfactory.
What we found
The cooling assembly required access to the compressor, condenser, copper lines and evaporator. An earlier freezer display reading was high. The repair covered several refrigeration components rather than a single door or lighting issue. This involved the lower refrigeration assembly and multiple connected components. Replacing the compressor and condenser affects the refrigerant circuit, while the heater line and filter must be handled with attention to their connections and placement within the same service area.
Repair
The compressor, condenser, heater line and filter were replaced as part of the service, followed by a refrigerant recharge. The procedure included connecting the new components and checking system operation and cooling performance. The refrigeration assembly was rebuilt around the replacement components, and the circuit was prepared for its new refrigerant charge. Electrical and tube connections were checked before startup, allowing the cooling response to be assessed after the lower service area was reassembled.
Parts and service
Compressor; condenser; heater line; filter; refrigerant recharge; cooling-system checks. Service was supplied without a warranty.
Result
The refrigerator and freezer were cold again, with the display showing 37 and 00 after service. The appliance was checked and returned to use with both compartments working.
Common faults
What Goes Wrong with Over-and-Under Refrigerator
The upper refrigerator and lower freezer drawer share a compact built-in layout, so cooling and door alignment both matter.
Upper Cabinet Is Warm
A failed fan, sensor or airflow path can warm the refrigerator while the freezer below remains cold.
Freezer Drawer Builds Frost
A drawer that sits low or a gasket that does not meet the cabinet can draw in humid room air.
Water Under the Drawer
A blocked defrost drain can collect melt water in the freezer floor.
Drawer Does Not Glide Evenly
Rails, panel weight and mounting hardware must be checked together.
Compressor Runs Too Long
Poor ventilation, dirty condenser coils or an air leak can increase run time.
Ice Maker Is Not Producing
Water supply, inlet valve, fill tube and ice maker controls each require separate checks.
Temperatures Swing
Sensors, door openings and cooling performance can cause inconsistent readings.
Display or Lights Fail
Switches, wiring and the control interface should be tested before replacement.
Discounted Service Call for a 2nd Appliance
Something else in the kitchen acting up? The technician is already there, so the second unit is looked at on the same visit.
Find your city
Where We Work
Pick your metro for the local number, the local team and recent appliance repairs in your area.
Questions
Over-and-Under Refrigerator FAQ
Straight answers before you book.
Why is the refrigerator warm but the freezer still cold?
An airflow or fan problem can affect the upper section without stopping freezer cooling.
Can you realign a freezer drawer with a custom panel?
Yes. Rails, panel weight and gasket contact are checked as one assembly.
Why is frost forming around the drawer?
A poor seal or defrost issue can let moisture freeze near the drawer opening.
Do you service built-in over-and-under units?
Yes. Provide the full model and serial number when booking.
Can you repair a failed ice maker?
The water supply and ice system can be tested to identify the failed component.
Do you use original Sub-Zero parts?
Parts are selected for the exact model and production version.
How much will repair cost?
You receive a written quote after diagnosis and before work begins.
Book now
Book Your Sub-Zero Over-and-Under Refrigerator Repair
Tell us your ZIP, the model number if you have it and what the appliance is doing.
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