From our Sub-Zero job files

Six Sub-Zero repairs, sorted by what failed.

On the built-ins in these photos the cooling machinery sits behind the louvered grille above the doors, not down at the floor, which is why so many of the pictures were taken from a step ladder. All six files are closed. What you read is what the technician typed up at the job and what the camera caught. A dollar figure is the customer’s whole bill, diagnostic included, shown to the nearest $5. Customers stay anonymous: we give a month and a town, nothing more.

Group 1 The sealed system Compressor, refrigerant and the tubing between them. One ended with a new compressor. The other took a second job, months later, to pin down.

When: October 2025
Where: Agoura Hills
Unit: Built-in side-by-side, oak panel front, door dispenser
Bill: about $1,655

68°F on the fresh-food shelves, and a fan that had already been replaced

The fresh-food side had stopped cooling. A fan had been replaced before, and the problem came back. On October 10 our infrared thermometer read about 68°F inside the fresh-food section. With the fan already ruled out, the technician’s note puts it down as “a likely sealed system problem.”

Five days later we replaced the compressor, fitted a new filter drier and a charge valve, recovered the refrigerant, purged and cleaned the system with nitrogen, and recharged it.

Panel-front Sub-Zero with top machinery exposed — October 15: grille off, the condensing unit exposed on top, nitrogen cylinder and gauges in the foreground.

Condenser fins close up — The condenser fins up close on the first visit, copper return bends at the left.

When: May 2026
Where: West Covina
Unit: Wide stainless built-in side-by-side
Bill: $650 in May; about $1,120 in September

A sealed-system repair we would not put a warranty on

The owner reported a refrigerant leak. When we arrived, the fresh-food section read 43.8°F. Our technician suspected either a leak or a restriction in the fresh-food sealed system, and could not confirm which of the two it was that day.

We recovered the refrigerant, replaced the filter drier, brazed, and recharged the system. We also added leak-detection dye, so that a leak would leave visible traces at its source. Our write-up for the customer says it plainly: no warranty on this repair until the unit has been monitored and the cause is known. The owner was asked to watch it and call us if the cooling dropped off again.

In September the cooling dropped off again. This time the dye did its job: under a UV light it glowed on the fresh-food evaporator itself, so on a second job we replaced the evaporator and its heat exchanger. The September repair, photo by photo.

Wide stainless Sub-Zero side-by-side — The unit in May, before we opened it up: louvered grille on top, white kitchen around it.

Manifold reading on the low side — Our digital manifold on the fresh-food system in May: low side at −4.0 inHg.

Top compartment with gauge hoses attached — Top compartment open: compressor, filter drier, copper lines, both gauge hoses connected.

Group 2 The electronics Two of these started with a power outage. The third started with a shorted wire.

When: November 2024
Where: Sunland-Tujunga
Unit: Stainless built-in side-by-side
Bill: about $970

Dead after an outage, and no model tag to order a board from

After a power outage the main control board stopped working. Ordering a board normally starts with the model number, and on this refrigerator the model tag was missing. Our technician called Sub-Zero technical support and came away with a part number that, as the note puts it, was “likely compatible.” The job was closed four days after the first visit with the board replaced.

Built-in Sub-Zero, top grille up — First visit: the top grille flipped up, a double wall oven beside the refrigerator.

Green Sub-Zero control board — The main control board with its wire harnesses plugged in, November 12.

When: June 2026
Where: Brentwood
Unit: BI-36S/S/PH built-in, label dated Jun 2010
Bill: about $1,905

Power at the unit, nothing on the panel

Another outage. This refrigerator was receiving power, but the control panel did not respond at all, and further testing showed the main control board was not sending voltage or communication to the rest of the system. We replaced the main control board and the control panel assembly and programmed them. The condenser coil was matted with dust, so it was cleaned on the same job.

The file shows two later visits to the same refrigerator: in September for a freezer that wasn’t staying cold, and again in November. Neither visit has a technician’s note saying what was found.

Sub-Zero BI-36S rating label — Its rating label: model BI-36S/S/PH, R134a, dated Jun 2010. We blurred the serial number.

Dusty condenser coil — The condenser coil on June 2, before cleaning, matted with grey dust beside the white fan shroud.

Control housing with flat cable — June 4: the control housing above the door, a flat cable plugged into one of its two sockets.

And one that wasn’t an outage. In Porter Ranch in January 2026 a Sub-Zero kept tripping and then died. Inspection found a shorted wire that had damaged the inverter board. The wiring was repaired, the inverter board replaced and the condenser coils cleaned, in a single day, for about $910.

Group 3 Frost, drains and a door switch Neither of these went near the refrigerant.

When: November 2025
Where: Calabasas
Unit: Stainless built-in, two upper doors over a drawer
Bill: about $995

The call was about noise. The work was about ice.

“Making noise” was the whole complaint. In a single visit our technician defrosted the unit by hand to clear an ice build-up, cleaned the drain line so melt water could run off, cleaned the condenser coils, and replaced the defrost thermostat so the icing would not come straight back.

Stainless Sub-Zero with a bottom drawer — The refrigerator, louvered grille still on: two upper doors over a drawer, next to a double wall oven.

Condenser coil, grille removed — Grille off: the black condenser coil in the top compartment.

When: January 2026
Where: Valley Village
Unit: Built-in with an electronic control strip
Bill: about $305

“dO Or” on the display, and no new part needed

The display between the ALARM and COLDER / WARMER labels was reading “dO Or”. Our technician traced it to a loose connection at the door switch, which was upsetting the interior lighting and the controls, and repaired the connection. The note lists no replacement part.

The condenser was under a thick grey layer of dust. We came back two days later and cleaned it.

Display reading dO Or — The control strip on the first visit, display reading “dO Or”.

Dust-coated condenser coil — The condenser on January 21, coated in a thick grey layer of dust.

Coil covered in foam — January 23: white foam on the same coil during cleaning.

Two estimates, two owners’ calls

Where the customer said not yet.

August 2026 · Marina del Rey

An estimate, and nothing after it

A new house with a Sub-Zero in it. The ice maker worked for a few days and stopped. We diagnosed it and wrote an estimate covering a replacement ice maker assembly, a new water filter and a condenser cleaning. The job closed at $85, the diagnostic fee. No repair is recorded on it.

October 2025 · Los Angeles 90048

The customer turned down the drain heater

A water leak that had come back after an earlier visit, when the drain line and coils were cleaned. This time we proposed a drain heater kit, to stop the drain line freezing and backing up, together with a new door gasket. The customer decided against the drain heater and chose to wait and see whether the leak returns. Bill: about $530.

Sub-Zero next to the other brands we repair

Costlier, icier, dustier.

The bill is close to double

Our median Sub-Zero invoice is $785. For refrigerators, ice makers and wine coolers of other named brands it is about $435. Half of our Sub-Zero invoices land between about $455 and $1,540, and roughly 4 in 10 reach $1,000 or more, against fewer than 1 in 10 for other brands. About 3 in 10 stay under $500. The stories above run from $305 to $1,905, so they cover that spread fairly.

The call is as often about ice as about temperature

What the customer reported	Sub-Zero	Other brands
Ice maker or no ice	about 29%	15%
Not cooling, too warm	about 27%	44%
Won’t start, no power	about 20%	14%
Not draining	about 14%	4%

Shares of completed refrigeration calls where the customer stated a problem; the other-brands column counts only calls where a brand was written down. One call can name more than one, so the columns don’t add to 100. The Sub-Zero side is a much smaller sample than the other column, so treat its figures as leans.

The condenser comes up in nearly half our notes

Close to half of the written technician notes we have on Sub-Zero jobs mention cleaning the condenser. For other brands it is fewer than one note in five. Two of the six units above had a coil matted with dust in the photos, and on these built-ins the coil sits above the doors, where nobody looks.

More second visits, and a different map

A Sub-Zero job in our files is more likely than other refrigerator jobs to need a second booked visit. Four of the six repairs above took more than one visit, and in West Covina and Brentwood we were called back to the same refrigerator months later.

Sub-Zero is about 7% of our refrigeration work where the brand was recorded, so we are not a Sub-Zero-only shop. That work is spread thin: no single city makes up more than about 8% of it. Brentwood, Calabasas, Beverly Hills, West Hollywood and Marina del Rey come up most, then Valencia, Westlake Village, Glendale, Pasadena and Tarzana. Our jobs overall are led by Glendale, Burbank and Pasadena, so the Sub-Zero map leans further west.

Model numbers that appear in our files include the 532, 561, 601 and 642, a 2010 BI-36S, and Sub-Zero wine storage and under-counter units.

Price figures use completed invoices above $100: on the Sub-Zero side, jobs where Sub-Zero was the only brand worked on; on the other side, jobs where a different brand was recorded.

Google reviews from Sub-Zero jobs

Five Sub-Zero owners, unedited.

We only show a review here if the reviewer’s name lines up with a finished Sub-Zero job in our files. The first is the West Covina owner from the no-warranty repair above. Two of them mention same-day arrival; that was their visit, and we don’t promise it for yours.

“Great service. On time. Professional. And expert .
Highly recomended.”

Fred P. · Google, 5 stars · Sub-Zero refrigerator, West Covina, May 2026

“Prompt same day service. Parts were ordered and service completed three days later and at scheduled time. Technician seemed knowledgeable and was very efficient. Would use this company again.”

Richard D. · Google, 5 stars · Sub-Zero refrigerator, Lake Sherwood, July 2025

“Arrived the same day as I called and promptly and professionally fixed my refrigerator while explaining the problem to us. I would use this company again.”

Marilou S. · Google, 5 stars · Sub-Zero refrigerator, La Crescenta, September 2025

“Roman was a very nice and knowledgeable technician. He did a great job!”

Ray H. · Google, 5 stars · Sub-Zero refrigerator and ice maker, Playa del Rey

“Timely, efficient, reasonable pricing, and responsive.”

Howard B. · Google, 5 stars · Sub-Zero refrigerator, San Marino, June 2025

Sub-Zero
Appliance Repair

Six Sub-Zero repairs, sorted by what failed.

68°F on the fresh-food shelves, and a fan that had already been replaced

A sealed-system repair we would not put a warranty on