Buttons had become intermittent over a couple of months and everyone I asked blamed the salt air. He proved the supply first, then found a contact set corroded at a connector behind the deck.
Leopold S.2026-08-04
Built-in Sub-Zero refrigeration — Jacksonville, FL, Duval County
The condenser sits at the top of the cabinet. In this city, that is where it starts.
A built-in Sub-Zero breathes the room through its upper grille, and almost every complaint we are called to starts somewhere cheaper than the sealed system. We work the order that proves it. $80 flat to diagnose, credited in full toward the repair.
01 Upper grille / condenser deck Airflow
The compressor and condenser sit at the top of a built-in, not behind it. Kitchen lint and — within a few blocks of the ocean — airborne salt land on the same fins. Restricted airflow shows up as a compartment running warm long before anything sounds wrong.
02 Fresh-food section and door seal Seal
A gasket that has taken a set stops sealing at the hinge end first. In a humid house the first symptom is condensation on the frame or a sweating door edge, not a temperature alarm.
03 Freezer section and ice maker Fill
Ice production stops long before food spoils, so a section running a few degrees warm stalls the mold while everything in the drawer still looks fine. We time a fill and measure what lands in it — that one number separates a supply fault from a harvest fault.
04 Opening, base and supply Fit
The cabinet is trimmed into joinery. In Riverside, Avondale, Old Ortega, San Marco, Old Mandarin the opening was drawn before the appliance existed, and there is rarely a dedicated 20-amp circuit behind it.
General note 1 — scope of work
- On the ticket
- Built-in and integrated Sub-Zero refrigeration, indoors, in a kitchen or a pantry: refrigerators, freezer and refrigerator columns, undercounter cabinets, wine storage and ice machines. The sealed system, the controls, the fans and defrost, the door and its gasket, and the opening the cabinet is trimmed into.
- Not on the ticket
- Heating and air conditioning. We do not install, service or diagnose furnaces, heat pumps, air handlers, condensing units for the house, thermostats for the house, or ductwork. We are not an HVAC contractor and not a ventilation contractor, and we do not hold ourselves out as either.
- Not on the ticket either
- Any other manufacturer, and any cooking, laundry or dishwashing appliance of any make. One product line from one maker is the entire reason we are useful on it.
- The name
- Sub-Zero on this site means the appliance manufacturer — the name stamped on the built-in refrigerator in the kitchen. It is a refrigeration brand, not a heating or cooling contractor with a similar name.
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Diagnostic
$80 flat
Flat diagnostic fee, credited in full toward the repair if you approve the work.
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Warranty
90 days labor
365 days on parts. Genuine OEM parts sourced through the manufacturer supply chain.
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Hours
8:00am – 6:00pm
Monday to Friday. Saturday 9:00am – 4:00pm. Scheduled appointments only.
The order we work in
A sealed-system repair is the most expensive work that can be done on a built-in refrigerator, and it is the hardest thing for a homeowner to verify afterwards. That combination is exactly why it is last on the list rather than first.
Every station below is cheaper than the one after it, and every one of them can be watched being done. The measurements go on the estimate, so a quote arrives with the evidence that made it necessary instead of an assertion.
- Shelf temperature, both compartments A built-in runs two independent sealed systems. Which compartment is warm halves the fault before anything is opened. Own probe, logged
- Condenser condition and discharge air Lost airflow presents exactly like a low charge. One of those costs a fraction of the other. Air temp at grille
- Supply voltage while the compressor starts A reading taken at rest says almost nothing. Marginal supply impersonates a failing control board. Meter at receptacle
- Evaporator frost pattern Frost is directional evidence. Partial coverage points one way, a solid block over the coil points at defrost. Interior panel off
- Air movement and duct clearance A stalled fan or a blocked return gives a warm section with a perfectly healthy sealed system behind it. Visual and by hand
- Door seal contact and cabinet level A seal open over a few inches loads the box with humid air continuously and holds a compartment above setpoint. Perimeter test, two axes
- Sealed system Last, and only once everything cheaper is eliminated in front of you and written on the estimate. Gauges, EPA 608
Sealed system last. Every reading written down and handed over.
What a built-in is, physically
Most of what makes this equipment different from a freestanding refrigerator has nothing to do with the refrigeration. It is trimmed into joinery, it exhausts upward into the room, it is heavy, and it expects a circuit and a supply line that were planned for it. Five facts govern nearly every visit.
- It is trimmed into joinery A built-in is not a freestanding box pushed into a gap. It is fixed to the surrounding cabinetry, and the panels, grille and trim come off in a set order before it moves at all.
- It exhausts upward The condenser deck sits behind the upper grille and rejects heat into the room. A soffit or a run of moulding returned across the top of the opening puts the machine back on its own discharge air.
- It is heavy and it rolls on rails Pulling a cabinet forward is a two-person job on protected flooring. Hallways, door casings and a turn at the end of a run decide whether it can leave the room at all.
- It expects its own circuit A dedicated 20-amp line, not a share with the counter receptacles. Where it is shared, the fault is intermittent and it reads as a control problem.
- It is usually plumbed Ice and dispenser models take a supply line through the floor or the rear wall, with a stop behind or below the cabinet that is frequently painted open or never fully opened.
Old kitchens, coastal air, storm season
Riverside, Avondale, Old Ortega, San Marco, Old Mandarin — Kitchens built between 1900 and 1930. Undersized cabinet openings, no dedicated 20-amp circuit, and cased openings that were never squared for a 36-inch built-in.
On the beaches the driver changes: condenser fins corrode, hinge pins seize and stainless pits along the door edge. Roughly 68 thunderstorm days a year. Control boards and inverter drives take the brunt of it.
What does Sub-Zero refrigeration repair cost in Jacksonville?
One number is known before the van moves: $80 to read the cabinet, credited against the work if you approve it. Everything scheduled beneath it is a band and not a figure, because the part sets the number and the part is not named until the readings are in.
| Item | Band |
|---|---|
| Reading the cabinet, diagnostic sequence | $80 flat |
| Door gasket or seal replacement | $230–$620 |
| Evaporator or condenser fan motor | $270–$580 |
| Defrost heater, thermostat or sensor | $240–$640 |
| Ice maker, water valve or supply line | $250–$670 |
| Electronic control board | $420–$860 |
| Compressor or sealed-system repair | $900–$2,340 |
$80 buys the readings; $2,340 is the ceiling of everything scheduled above it. The written estimate sits between the two and carries one figure, handed over before a part is ordered.
Repair sheets
Neighborhood sheets
Latest field notes
- 2026-10-10 Sub-Zero freezer noises: normal or a fault
- 2026-10-10 Why buy a Sub-Zero: how the design works
- 2026-08-15 A 36-inch cabinet in a 1926 opening
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A-01
Repairs
Sealed systems, ice production, controls, door and gasket work on built-in Sub-Zero refrigeration. One brand, nothing else.
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A-02
Neighborhoods
Kitchen age, coastal exposure and what is actually behind the cabinet change by ZIP across Duval. Each area sheet carries what is true of that place.
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A-03
Field notes
What actually fails here, written up after the call. A corroded condenser, a board that took a summer of sags, a 1926 opening that will not take a 36-inch cabinet.
Book the diagnostic
Flat diagnostic fee, credited in full toward the repair if you approve the work. Written estimate before any part is ordered or any labor is billed. Terms are set out in full on the pricing sheet and the warranty sheet, and the common questions are answered here.
Asked and answered
Questions we answer on the phone anyway
- What does Sub-Zero refrigeration repair cost in Jacksonville?
- $80 flat to diagnose, credited in full toward the repair. Completed work runs by band: $230–$620 for a door seal, $270–$580 for fan work, $420–$860 for a control board, $900–$2,340 where the sealed system is genuinely the fault. The firm figure is written down first.
- What is checked before the sealed system is opened?
- Shelf temperature in both compartments, the condenser deck and discharge air, supply voltage while the compressor starts, the frost pattern on the evaporator, air movement and duct clearance, then the door seal and cabinet level. The sealed system is seventh, not first.
- Do you work on anything other than this one manufacturer?
- No. Sub-Zero refrigeration only: built-in refrigerators, integrated columns, undercounter cabinets, wine storage and ice machines. No other brand, and no cooking, laundry or dishwashing appliance of any make. One product line is the reason we are useful on it.
- Do you service heating or air conditioning?
- No. Sub-Zero is the manufacturer whose name is on the built-in refrigerator in the kitchen, not a heating or cooling contractor. We do not install, service or diagnose furnaces, heat pumps, air handlers, house thermostats or ductwork, and we are not an HVAC contractor.
Customer feedback
What owners said after the call
4.5 out of 5 across 71 customer reviews. Read every one of them.
Everything in the fresh food side was going off within two days. He put his own probe on the middle shelf and left it there while he worked, rather than trusting the number on the front panel.
Octavia R.2026-09-16
Noise from the base had been getting worse for weeks. The condenser fan was catching on a build-up at one corner of the housing, and the blade itself had a hairline split he showed me.
Rosalie U.2025-11-27