Why is my refrigerator warm but my freezer still cold?

On units with separate cooling systems, like many Sub-Zero built-ins, the refrigerator side can fail on its own. Common causes include a failed fan, a defrost problem that has iced over the evaporator, a faulty sensor or a door that isn't sealing.

Should I unplug the refrigerator before you arrive?

Usually not, unless you notice burning smells, sparking or water near electrical parts. Leaving the unit running lets the technician see the symptom and read any fault codes. Do move perishables to a cooler if temperatures are climbing.

Do you repair Wolf refrigerators?

Wolf makes cooking appliances, not refrigerators. We repair Wolf ranges, cooktops and ovens. For refrigeration, we service Sub-Zero, Viking and Thermador units.

How often should the condenser be cleaned?

It depends on your kitchen, pets and how much cooking you do, but checking it periodically is worthwhile. A dusty or greasy condenser forces the refrigerator to work harder, especially during hot spells.

Is the frost in my freezer a sign of a serious problem?

Not always. A light frost near the door often points to a gasket or door alignment issue. Heavy ice on the back wall usually means a defrost fault. Both are normally repairable components rather than sealed-system failures.

Are you affiliated with Sub-Zero or the other brands?

No. We are an independent repair company and are not affiliated with or endorsed by Sub-Zero, Viking, Wolf or Thermador.

Refrigerator Repair | Sub-Zero Service Center

The short answer

Most problems with high-end built-in refrigerators can be repaired: cooling, frost, ice maker, leak and error-code faults. A Sub-Zero, Viking or Thermador unit is usually worth fixing when the cabinet, sealed system and controls are sound. Our technician diagnoses the fault on site, explains your options and quotes the work before starting.

A built-in refrigerator that stops holding temperature puts a week of groceries at risk. It also raises a harder question: is a unit this expensive worth fixing? Sub-Zero Service Center repairs premium refrigeration for homeowners in Wilmington and nearby cities, including Carson, San Pedro, Harbor City and Long Beach. We work mostly on Sub-Zero built-in and integrated units. We also service Viking and Thermador refrigerators and the Wolf cooking appliances that often share the same kitchen. We are an independent repair company, not affiliated with any manufacturer. Our job is to find the actual fault, explain it in plain terms and help you decide what makes sense for your kitchen.

Issues we fix

Refrigerator trouble usually starts small: a warm shelf, a puddle under the crisper or a fan that sounds louder than it used to. Catching it early often means a simpler repair and less spoiled food. These are the symptoms owners call us about most:

Refrigerator section warm while the freezer still feels cold
Freezer not freezing, or ice cream turning soft
Frost or ice build-up on the back wall, the evaporator cover or around the door
Water pooling inside the unit or on the floor, often from a blocked defrost drain
Ice maker not making ice, making small cubes or jamming
Water dispenser slow, dripping or not working
Error codes, flashing displays or a service indicator that won't clear
Compressor running constantly, or cycling on and off too often
Clicking, buzzing, grinding or rattling from fans or the compressor
Doors that won't seal, swing shut unevenly or leave condensation on the gasket

Technician testing the control board of a built-in refrigerator

What our technician checks on a built-in unit

Built-in and panel-ready refrigerators are packaged differently from freestanding models. On many built-ins, the condenser and compressor sit in a compartment at the top behind a grille. Others sit at the bottom behind a kick plate. Our technician starts there. Condenser coils clogged with dust and kitchen grease are a common reason a unit runs hot and struggles to keep up. That matters more during summer heat waves and fall Santa Ana winds, when the refrigerator has to shed more heat.

From there, we check the condenser and evaporator fans and test the defrost heater, thermostat and drain. We read the temperature sensors and compare them with actual readings inside each compartment. We look at the door gaskets, hinges and closers, because a door that doesn't seal will keep a good refrigerator running nonstop. If the unit has an ice maker or dispenser, we test the water valve, the supply line and the filter housing. We also check the control board and any stored fault codes. If the evidence points to the sealed system, meaning the compressor, refrigerant or a leak, we tell you directly. That repair is a bigger decision.

How Sub-Zero, Viking, Wolf and Thermador differ

Sub-Zero refrigerators, especially many built-in and integrated models, use separate cooling systems for the refrigerator and the freezer. Because the two sides cool independently, one can fail while the other keeps working. A warm fresh-food side next to a cold freezer is a common sign. Typical repairs include condenser cleaning, fans, defrost components, door gaskets, ice makers, water valves and electronic controls.

Viking built-in refrigerators share many of the same wear points: fans, defrost systems, ice makers and control boards. On heavy professional-style doors, hinges and door alignment deserve attention, because a door that sags won't seal properly. Thermador column and built-in units rely heavily on electronic controls and sensors. On panel-ready installs, a door that sits slightly out of alignment with its custom panel can cause seal and frost problems.

Wolf makes cooking appliances rather than refrigerators. Wolf ranges and wall ovens are often installed alongside Sub-Zero refrigeration, so we can look at both while we're in your kitchen.

Tell us what your appliance is doing.

Call (213) 296-1898 Request Service

Repair or replace a high-end refrigerator?

A premium built-in refrigerator is designed to last, and its cabinet, panels and fit within custom cabinetry are hard to replicate. Replacing one often means matching an exact opening, reordering custom panels or adjusting the cabinetry. For that reason, repair is usually the practical choice when the cabinet is solid and the fault involves a fan, sensor, defrost part, ice maker, valve, gasket or control board.

Replacement becomes worth discussing when several problems are stacking up at once, or when the sealed system has failed on an older unit. It is also worth discussing when needed parts are no longer available, or when the cabinet itself is damaged or rusted. We'll explain what we found and what the repair involves. We won't push either direction.

What affects the cost of a refrigerator repair

We quote after diagnosis, because the same symptom can have very different causes. A warm refrigerator might need a condenser cleaning, or it might need a new fan motor, defrost heater or control board. The main factors are the fault itself, the parts it requires and how easy those parts are to get for your model.

Access matters too. A unit set deep into custom cabinetry, or one with heavy custom panels, can take more time to service safely. Sealed-system work generally involves more labor and parts than a component repair. We explain these factors before any work begins, so the quote makes sense to you.

How a service visit works

When you contact us, tell us the brand, the symptoms and any error codes you see. If you can find the model and serial number, that helps too. On many built-ins, the label is inside the refrigerator compartment near the top or behind the top grille. With that information, we can often bring the parts most likely to be needed.

At the visit, the technician inspects and tests the unit, explains the fault and gives you a quote. Many repairs can be finished the same day. If a part has to be ordered, we schedule a return visit to install it. Until then, we'll suggest ways to protect your food. Before leaving, we confirm the unit is cooling and walk you through any simple upkeep, like keeping the condenser clean.