Built-in refrigeration, ranges and dishwashers, repaired by technicians who work on these systems every day — and who check whether the opening still holds square before they quote you a part.
Refrigeration is what Sub‑Zero builds and what we work on most. Every unit gets a technician who has seen the same sealed system before.
Sub‑Zero builds refrigeration and nothing else, and the engineering that follows from that is where generalist appliance training runs out.
Each of these has its own diagnosis page — what causes it, what it usually costs, and whether it is worth repairing.
The Peninsula holds the densest concentration of Eichlers anywhere — more than 2,700 in Palo Alto and roughly 650 in the San Mateo Highlands, the largest single tract ever built. Radiant heat is cast into the slab, and there is no crawlspace and no attic. A new water line cannot go under the floor, and cutting the slab risks the heating loop, so the same repair is a different job here than three streets away.1 to 3 grains per gallon. Las Vegas runs 16. Most people hear that and assume their appliances are in the clear.
They are in a different kind of trouble. Water this soft carries almost no dissolved mineral and very little alkalinity, around 20 mg/L, so rather than laying down a protective scale layer it strips one — and takes metal with it. That is why the utility treats for corrosion control rather than for hardness. In an appliance it shows up as the opposite of a hard-water fault: not a furred-up element but pitted metal, weeping solder joints on copper fill lines, and pinholes upstream of a valve that then get reported as an appliance failure when the appliance is fine.
And nothing here ever really dries out. A marine climate with a long cool wet season means a door gasket rarely gets a chance to dry between cycles, and a garage or utility-room install runs for months in air sitting close to saturation. Seals perish rather than crack, which passes a visual check and still leaks.
The same technicians work across the rest of the built-in market, so a kitchen with three different badges in it takes one visit rather than three.
The Peninsula holds the densest concentration of Eichlers anywhere — more than 2,700 in Palo Alto, and the 650-odd in the San Mateo Highlands make up the largest single tract ever built. Radiant heat is cast into the slab, there is no crawlspace and no attic, so a new water line to an ice maker cannot go under the floor and cutting the slab risks the heating loop. It is a different job from the same repair three streets away.
Covering Baywood, San Mateo Park, Aragon, Hayward Park.
ZIP codes served in San Mateo: 94401, 94402, 94403, 94404, 94497
From Daly City down the bay to Palo Alto and Los Altos, and west over the ridge to Half Moon Bay and the coastside.
See all service areas →Same-day appointments across the Peninsula.
*SubZero Repair San Mateo is an independent repair company and is not affiliated in any way with Sub-Zero, Inc., Wolf Appliance, Inc., or any of their distributors. We are not a factory service provider and specialize exclusively in out-of-warranty appliance repairs.