Sub-Zero Refrigerator Repair in Marin County and San Francisco
Built-in, integrated column, undercounter and wine storage units that are warm, icing, leaking or running nonstop. Diagnosed in place.
Rated on Google from 109 reviews · Factory-trained technicians · Lic. 65972
Sub-Zero refrigeration is designed to be repaired rather than replaced, and most units we see are well past their manufacturer warranty. The failures are consistent: a condenser clogged with dust at the top grille, an evaporator fan or defrost fault that ices the coil, a water valve or ice maker, a control or sensor, and on older units a sealed-system problem.
What we work on
- Classic built-in (side-by-side, over-and-under, all-refrigerator/all-freezer): top-mounted condenser and compressor compartment behind the grille; many models run separate sealed systems for the refrigerator and freezer, so one side can fail while the other stays cold.
- Integrated columns and drawers: panel-ready units that sit flush in the cabinetry and are diagnosed in place.
- Undercounter refrigerators, freezers and ice makers.
- Wine storage: temperature and humidity faults.
How a Sub-Zero no-cool call goes
We confirm which compartment is affected, check the condenser and condenser fan at the top grille, look at the evaporator for a frost pattern that points to defrost or airflow, and read the control’s diagnostics where the model supports it. The goal is to separate a same-visit repair (fan, cleaning, sensor, valve) from a parts order or a sealed-system repair before you spend money. Before you book, our Sub-Zero not cooling guide covers the owner checks, the temperatures that mean a condenser cleaning won’t fix it, and what each warm-side pattern points to.
Photos from our Sub-Zero service calls
Related services
Sub-Zero repair records
Where we see Sub-Zero most
Sausalito · Mill Valley · Tiburon & Belvedere · San Francisco. See all repair records.
Sub-Zero repair in San Francisco
San Francisco calls are handled from our Marina location on Buchanan Street, (415) 683-0403. In the city, Sub-Zero is often a panel-ready integrated column in a galley kitchen that cannot be pulled forward, so it is diagnosed where it stands; removing a custom cabinet front badly costs more than the repair. A warm fresh-food section with a cold freezer in an SF flat is usually a defrost, evaporator-fan or airflow fault rather than the compressor, and kitchens against uninsulated exterior walls see evaporator icing more often than average. For buildings that require it, we can provide a certificate of insurance before the visit. More on appliance repair in San Francisco.
Diagnostic fee
UniFix Appliance Repair diagnostic visits start at $85. The diagnostic fee varies by appliance type, brand, location, and appointment requirements. We confirm the fee before scheduling. If you approve the repair, the diagnostic fee is applied toward it. The repair, including any special-order parts and their lead time, is quoted before work starts.
Sub-Zero customers on Google
Excerpts are copied word-for-word from our Google Business Profile, where UniFix is rated from 109 reviews (as of Nov 2, 2026). Read every review on Google.
“Daniel helped me repair my Sub zero refrigerator in Sausalito. He came out the same day and fixed it right away. It took me two weeks and five different estimates to finally find someone reliable who wasn’t trying to sell me things I didn’t need.”
“Daniel was great he came on time and fixed my SubZero refrigerator. Will definitely use him in the future!”
How a visit works
- Book. Call (415) 494-7882 or use the form below. Tell us the brand, model and what the appliance is doing; we confirm the diagnostic fee and an arrival window before scheduling. Same-day appointments when available.
- Diagnose. The technician tests the appliance in your home and explains what failed and why.
- Approve the price. You get the repair price before any work starts, and decide whether to go ahead.
- Repair or order parts. Sub-Zero parts are usually special-order. We diagnose fully on the first visit so the right part is ordered once, and give you the lead time before you approve.
Before you book
- Check the warranty first. If the unit is still under Sub-Zero’s warranty, call Sub-Zero’s own service network so the repair is covered.
- Find the model and serial. On a rating plate inside the refrigerator compartment or behind the top grille, depending on the series. A photo of it helps us check parts before the visit.
- Note which side is warm. Refrigerator side, freezer side or both, and since when; on dual-system models this narrows the fault before we arrive.
- Clear the top grille. Most classic built-ins are serviced from the top, so make sure the grille area is reachable.
Common questions
One side of my Sub-Zero is warm and the other is fine. What does that mean?
On models with separate refrigeration systems, each side has its own compressor or evaporator circuit, fans and defrost. One warm side narrows the fault to that circuit.
Do you use genuine Sub-Zero parts?
We use OEM parts where they are available and tell you before using anything else.
Request a visit
Prefer to talk? Call (415) 494-7882 (San Francisco: (415) 683-0403). UniFix Appliance Repair diagnostic visits start at $85. The diagnostic fee varies by appliance type, brand, location, and appointment requirements. We confirm the fee before scheduling. If you approve the repair, the diagnostic fee is applied toward it.