Independent service companyRefrigeration only: built-in and integrated columns, freezers, wine storage, undercounter units and ice makers.Mon–Fri 8am–6pm · Sat 9am–4pm · Sun closed
Two sealed systems in one Sub-Zero cabinet. One of them has failed.
Every full-size Sub-Zero refrigerator carries two compressors and two evaporators, so a
warm fresh-food compartment above a freezer still holding 0°F is a
specific fault with a short list of causes rather than a contradiction. Refrigeration only: built-in and integrated columns, freezers, wine storage, undercounter units and ice makers.
Mon–Fri 8am–6pm · Sat 9am–4pm · Sun closed40 miles by road from Fruit Cove and St. Johns County.90 days labor, 365 days parts, genuine OEM components.
A warm compartment and a cold one in the same cabinet. That is where the visit starts.
Diagnostic$80
Labor warranty90 days
Parts warranty365 days
Service radius40 mi by road
Dual refrigeration
The two compartments do not share air, a coil, or a compressor.
Upper system · fresh food38°F
Held cool and deliberately humid so produce does not dry out. Its own compressor, evaporator
and defrost circuit. When it fails the freezer below carries on reading correctly, which is
what makes the symptom so hard to describe over the phone.
Lower system · freezer0°F
Held frigid and dry, because moisture in a freezer becomes frost. Ice needs this compartment at
or below 5°F, with 0°F recommended, and a
freezer running warmer than that explains most complaints about thin, hollow or slow ice.
Any description of these cabinets that refers to the compressor is describing a different
appliance. There are two, and usually one of them is working perfectly.
Before you call
The 48°F rule decides whether a cleaning will help.
Sub-Zero publishes a threshold worth repeating exactly. A fresh-food compartment above
48°F against a 38°F setpoint is
unlikely to recover from a condenser cleaning: something has failed rather than fouled.
Below it, clean the condenser first. It is the one cause a homeowner can address without tools
and the most common reason a cabinet stops holding setpoint in August. The second half of the
rule matters as much: if setpoint has not returned within
24 hours of a cleaning, the unit needs service.
Where the condenser sits is a series question. Classic and legacy Built-In cabinets, and the
430 wine unit, are top-mounted behind a flip-up grille; Designer, legacy Integrated, the 700
Series and the 427 are bottom-mounted. Clean it every six to twelve months, six with pets, and
not at all on a cabinet under six months old.
If the display is showing a code, leave it. It records when the excursion began and how the
control answered, and clearing it before the visit throws that away.
Northeast Florida
Storm season damages boards weeks before the cabinet fails.
This region gets around sixty-eight thunderstorm days a year, and every one puts transients on
residential branch circuits. A built-in refrigerator is permanently connected and is the one
appliance nobody unplugs, so it sits through all of it.
The damage is rarely immediate, which is what makes it hard to report. A board that absorbed a
transient often runs for weeks before it drops a defrost cycle, stops reading an evaporator
sensor, or starts one sealed system and not the other. Tell us about an outage or a strike in
the past month anyway: it is diagnostic information, not small talk.
Extended outages are their own event. Parts of this metro went days without power after
Matthew in 2016, Irma in 2017 and Helene in 2024. When power returns, both sealed systems
restart into a warm cabinet at full duty for hours, and start components, condenser fan motors
and tired boards fail under that load rather than during the outage.
Board fit is serial-dependent here, so we never publish a control-board number as definitive;
the plate is read on site before anything is ordered. On the coastal ZIPs a second mechanism
runs alongside all of this, because chloride in the air corrodes aluminium fin stock and hinge
hardware, and a corroded coil cannot be cleaned back to health.
Service area
Fruit CoveLate 1990s onward, kitchens fitted 2005 to 2020 · 3 mi by road
NocateeMostly built out in the last fifteen years · 14 mi by road
Ponte Vedra BeachLarge 2000s kitchens, many since renovated · 22 mi by road
MandarinDeveloped over decades, every vintage present · 7 mi by road
DeerwoodOlder Southside stock, kitchens renovated at least once · 14 mi by road
World Golf VillageTwo generations, early 2000s and current build-out · 22 mi by road
What a Sub-Zero repair covers here, and what it does not.
We service
Built-in and integrated refrigeration inside the kitchen: refrigerator and freezer columns, wine storage cabinets, undercounter units, refrigerator drawers, and the ice makers built into them.
Sub-Zero is a kitchen appliance manufacturer. The name is a brand stamped on the model plate of a built-in refrigerator, a freezer column, a wine cabinet or an undercounter unit — it is not a temperature reading and it is not a heating or cooling trade. Every appliance on this site stands in a kitchen, carries a model plate,
and is repaired in the room it was installed in. The six kinds of
repair and the eight model series are listed in full.
We do not
Not heating, not air conditioning, not heat pumps, not air handlers and not ductwork. We do not install, service, replace or quote any part of a comfort-cooling or heating system, indoors or out, and we do not subcontract one.
Nor cooking equipment, laundry or dishwashers. A condenser coil in a kitchen cabinet and a
condensing unit on a slab beside the house are both refrigeration in the textbook sense and
neither one of them is the other. If a house is warm, call an HVAC contractor; if a cabinet is
warm, that is our work, and the drive distances are published.
The fresh-food side runs its own compressor and its own evaporator, so a warm refrigerator sitting above a freezer that still holds 0°F is a specific fault with a short list of causes.
A freezer column holds 0°F on one sealed system with no fresh-food side to borrow air from, so frost, drain ice and defrost faults present differently here than they do in an over-under cabinet.
Wine cabinets hold a narrow band far above freezing, so the failures that matter are drift, humidity and light rather than the frost and defrost problems that dominate food refrigeration.
Ice production has a 5°F temperature floor, a fill volume and a harvest cycle, and the three of them fail in ways that look identical from the front of the cabinet and are not.
Undercounter units live in the hottest, most airflow-restricted position in the kitchen, and most of their faults trace back to the grille, the drain or an ambient temperature the cabinet was never rated for.
Drawer units carry their whole seal on a moving part, so alignment, runner wear and gasket compression cause more warm-drawer calls than any refrigeration component does.
Model series
Both vocabularies, because nearly all of the work is on legacy cabinets.
Built-In became Classic and the plate prefix moved from BI to CL; Integrated became Designer and
IT, IC, ID and IW became DET, DEC and DEU. Most cabinets here still carry the old names, so this
site uses both.
Published coverage is 2 years full parts and labor,
5 years full sealed system and 12 years limited sealed system, parts only.
In years 6 through 12 the sealed-system part is still covered, parts only. A homeowner may have that work done by an independent shop: the covered part is obtained from the manufacturer directly and the homeowner pays the labor.
On a compressor or evaporator failure that is often the difference between a repair and a
replacement. Have the serial number and the install date before you approve anything.
Full warranty detail.
Latest service notes
Ice bin latched vs unlatched in a Sub-Zero freezerA seated bin lets the ice maker fill it, read the level and close the drawer tight. A loose one fakes a fault that a minute of reseating usually fixes.
Sub-Zero wine cooler not cooling, checked in orderMost warm wine cabinets recover after a condenser cleaning and a full day of patience. The ones that do not are pointing at the fan or the sealed system.
Years six to twelve — the coverage most owners missThis is the single strongest honest argument for using an independent shop, and it is missed constantly because it sits inside a warranty most owners assume expired at year five.
The bands below are this company's own, researched for this market. The diagnostic fixes which one your cabinet is in and the estimate fixes the figure inside it.
Bands that fit this page, parts and labor
Work
Typical range
Diagnostic visit, credited toward the repair
$80
Compressor or sealed-system repair
$900–$2,360
Ice maker, water valve or supply line
$230–$630
Parts and labor together, on this equipment, in this market. The band is where the work lands
before it is measured; the figure itself is written down after the diagnostic and before anything
is ordered. $80 of it is the diagnostic, credited toward the repair once you
approve the work, and $2,360 is the top of the range on this page rather than a price
anybody expects to pay. The whole book is here.
Fresh food side sat at fifty-two while the freezer below never wavered. He traced it to a stalled evaporator fan behind the rear panel, showed me the seized bearing, and had the compartment back down before he left.
Alicia P.2026-06-14
★★★★★
The lower drawer would not close the last inch. He stripped the runner, found a bent slide from something being forced shut, and replaced the pair so that the unit tracks straight again.
Phoebe A.2026-02-18
★★★★★
The door alarm kept sounding at night with the door plainly shut. The magnetic seal had rolled at the hinge end and the cam was worn. New gasket, cam adjusted, and the alarm has not gone off since.
Lucia D.2025-12-03
Reference
What people ask before they call
What does a service call cost?
$80 flat diagnostic, credited toward the repair. Written estimate before any part is ordered or any work begins. No trip charge inside the published area and no after-hours rate, because we do not work after hours. The band each kind of repair falls in is printed further down this page.
Do you do heating or air conditioning?
No. Not heating, not air conditioning, not heat pumps, not air handlers and not ductwork. We do not install, service, replace or quote any part of a comfort-cooling or heating system, indoors or out, and we do not subcontract one. Sub-Zero is a kitchen appliance manufacturer. The name is a brand stamped on the model plate of a built-in refrigerator, a freezer column, a wine cabinet or an undercounter unit — it is not a temperature reading and it is not a heating or cooling trade. The overlap is a word, not a trade: a sealed refrigeration system inside a kitchen cabinet and a comfort-cooling system for a house are different machines, different licences and different companies.
Do you service Sub-Zero cooking equipment as well?
No. Sub-Zero builds refrigeration and nothing else, so there is no such thing as a Sub-Zero range to repair. Refrigeration only: built-in and integrated columns, freezers, wine storage, undercounter units and ice makers.
Is my cabinet still covered by the manufacturer?
Possibly, and it is worth checking before you approve anything. The published coverage is 2 years full parts and labor, 5 years full sealed system and 12 years limited sealed system, parts only. In years 6 through 12 the sealed-system part is still covered, parts only. A homeowner may have that work done by an independent shop: the covered part is obtained from the manufacturer directly and the homeowner pays the labor.
Independent service company
Book a diagnostic
$80 flat diagnostic, credited toward the repair. Written estimate before any part is ordered or any work begins.
Mon–Fri 8am–6pm · Sat 9am–4pm · Sun closed. Scheduled appointments only. No after-hours or emergency service.
