Factory-Authorized: Sub-Zero · Wolf · Cove
A Sub-Zero is built to run for twenty years. When it stops, you want the people Sub-Zero authorizes — not a generalist guessing on a built-in worth more than the car in your driveway. We're factory-trained, we install genuine Sub-Zero parts, and most repairs are finished the same day.
Advance Appliance Services has repaired Sub-Zero refrigerators in Sonoma, Marin, and Napa counties since 2006. We service every Sub-Zero line — Built-In, Classic, Designer, PRO, and Undercounter — from refrigerators and freezers to ice makers and wine storage. Because we're factory-authorized, our technicians are trained on Sub-Zero's dual refrigeration and sealed systems and install only genuine Sub-Zero parts. You get an honest diagnosis, a written estimate before any work begins, and in most cases a same-day fix.
These are the problems we see most. If yours isn't listed, call us — if it's a Sub-Zero, we've almost certainly fixed it before.
Often a condenser, evaporator fan, or sealed-system issue. We diagnose the real cause before replacing anything.
Sub-Zero's dual refrigeration runs two separate systems — we pinpoint which side has failed.
Usually a defrost heater, sensor, or door-seal problem. We stop the build-up at its source.
A blocked drain line or failed water valve. We clear it and check for hidden damage.
From no ice to slow or hollow cubes — a common, very fixable Sub-Zero complaint.
Condenser fans, compressors, and dirty coils all cause it. We find which, and quiet it down.
That warning light has a specific meaning. We read it correctly and fix what it's pointing to.
Control-board and sensor faults that throw alarms or wrong readings — diagnosed properly, not guessed.
Worn gaskets let cold escape and run up your bill. We re-seal it so it holds temperature again.
A Sub-Zero isn't a standard refrigerator, and it shouldn't get standard service. Authorization isn't a sticker — it's training, parts access, and accountability.
Sub-Zero's two-compressor sealed system is unlike any other fridge. We're trained on exactly how it works — and how it fails.
We install authentic Sub-Zero components — not aftermarket substitutes that fail early and void coverage.
If your unit is under Sub-Zero warranty, authorized service keeps that coverage intact. Unauthorized repairs can end it.
A built-in Sub-Zero is part of your kitchen's value. Correct repair keeps it running — and looking — the way it should.
Old or new, integrated or freestanding — if it wears the Sub-Zero badge, we service it.
Have a model number handy? Just read it to us on the call — from a BI-36 to a 648PRO, we'll know it.
Tell us your model and what it's doing. We ask the right questions and book a visit that fits your day.
A factory-trained tech finds the real problem and gives you a written price — before any repair begins.
With genuine parts on the truck, most repairs are finished the same day — backed by our guarantee.
You'll get a written estimate after diagnosis, and you approve the price before we lift a tool. No mystery invoices — ever.
Book a repairBased in Santa Rosa, on the road across all three counties — often at your door the same day.
Call now and talk to a real person. We'll send a factory-trained Sub-Zero technician to your door — often the same day.
