Do you actually come out to Cupertino, or is that too far from San Ramon?

Cupertino is well within our regular service area. We run the South Bay as a standard route from our San Ramon base. There is no extra travel charge, and we schedule Cupertino calls the same way we schedule everything else in the Bay Area.

Is a Tempstar unit a reasonable fit for a Cupertino home, or should I consider something else?

For a mid-century ranch or a standard two-story tract home in Cupertino with existing ductwork, Tempstar is a solid choice at a realistic price point. It runs on Carrier engineering, so the heat exchanger, compressor, and board components are the same platform as more expensive badges. The tradeoff is a smaller local dealer network, which is why having an independent certified tech matters more with this brand than with something sold through a major chain. If you are weighing options at replacement time, we will give you a straight comparison at the estimate.

What exactly does the $75 diagnostic cover, and what warranty comes with the work?

The $75 covers a full system diagnosis: we pull fault codes, run electrical tests on the components in question, and tell you exactly what failed and why before quoting anything. If you approve the repair that same visit, the $75 comes off the bill. Parts and labor on that repair are covered for one year. If you are doing a full replacement instead, new equipment installations carry a 10-year parts warranty and 10-year labor warranty.

TEMPSTAR · CUPERTINO

Service · All Tempstar Models

Tempstar Heat Pump, AC & Furnace Repair · Cupertino, CA

Tempstar heat pump, AC, and furnace repair in Cupertino, where summer afternoons push older ducted systems hard and bay-influenced nights still demand reliable heating.

$75 diagnostic (waived with repair)
Same or next-day best effort
CSLB #1136642

Call (925) 999-4095

Tempstar in Cupertino

Tempstar heating and cooling in Cupertino.

Cupertino sits in a pocket where summer afternoons can push into the mid-90s, especially away from the immediate bay influence, but marine layer keeps winter nights damp rather than brutal. Most of the housing stock here is mid-century ranch and two-story tract homes built from the 1960s through the 1980s, and almost all of them have central ducted HVAC. Tempstar condensers and furnaces dropped into those systems are common, usually installed through an independent dealer rather than a big brand chain. That means when something fails, the homeowner is often calling around because the original contractor is long gone.

When we diagnose a Tempstar unit, we pull any fault codes off the control board before we touch anything else. The communicating variable-speed models store history we can actually read. On the gas furnace side, the hot surface igniter and flame sensor are the first things that fail, and we test each component in sequence rather than swapping parts on a guess. One check that matters specifically here: Cupertino homes near the bay-side edge of the city see enough salt-laden humidity that outdoor coil and contactor corrosion moves faster than inland. We look at that on every call before recommending a repair versus a more durable fix.

Bay Area HVAC Service is our HVAC division, operating out of San Ramon. We cover Cupertino on a regular route. The diagnostic fee is $75 and we credit it fully against the repair if you go ahead with the work. We give you a written quote before any wrench turns. Our technicians hold EPA Section 608 Universal certification, and the company is licensed under CSLB 1136642. New installations carry a 10-year parts and 10-year labor warranty. Repair work comes with a 1-year warranty on parts and labor.

Common repairs we do

What we close on the truck.

Hot Surface Igniter Failure on Gas Furnaces. The silicon nitride igniter in Tempstar gas furnaces is brittle and degrades over time, especially in a home that cycles heat frequently during Cupertino's cool, damp winters. The symptom is a furnace that starts the ignition sequence, you can hear the inducer spin up and the gas valve click, but the burners never light and the unit locks out. We test igniter resistance and verify the control board is sending proper voltage before swapping the part. Since these run on Carrier platform boards, replacement parts are stocked and the fix is typically same or next-day.
Flame Sensor Cutout After Ignition. A fouled or oxidized flame sensor will let the burners ignite for two or three seconds, then kill the gas valve because it can not confirm a flame is present. The furnace tries again, fails again, and locks out after a few attempts. This is a frequent call on Tempstar units that have gone several seasons without maintenance. We clean and test the sensor first, because in most cases that resolves it without a parts replacement. If the rod itself has degraded beyond cleaning, the replacement cost is low and the part is the same Carrier-supplier component used across the ICP brand family.
Condenser Capacitor and Contactor Wear on AC Units. Cupertino summers are warm enough that condensers run long daily cycles from June through September, and that workload wears capacitors and contactors on a predictable curve. A failing run capacitor shows up as a compressor that struggles to start, draws high amps briefly, then trips the breaker or the thermal overload. We test capacitance with a meter, check contactor contact surfaces for pitting, and replace both if either is out of spec. On Tempstar condensers near the bay-side neighborhoods, we also check for corrosion on the contactor terminals because salt air accelerates that wear faster than it would in a purely inland location.

Models we service

Tempstar product lines.

Gas furnaces (Ion and QuietComfort series)
Heat pumps and AC condensers
Variable-speed communicating systems
Air handlers and coils
Diagnostics, board and igniter repair, warranty work

Pricing and warranty

What it costs. What we stand behind.

$75

Diagnostic visit. Waived when you book the repair with us.
Written

90 days on consumables, 1 year on major parts, 2 years on sealed-system rebuilds. Quoted in writing before work starts.
CSLB

#1136642. Bonded and insured. We file warranty paperwork when applicable.

Nearby cities

Tempstar service in neighboring cities.

FAQ

Tempstar in Cupertino questions, answered.

Do you actually come out to Cupertino, or is that too far from San Ramon?

Cupertino is well within our regular service area. We run the South Bay as a standard route from our San Ramon base. There is no extra travel charge, and we schedule Cupertino calls the same way we schedule everything else in the Bay Area.
Is a Tempstar unit a reasonable fit for a Cupertino home, or should I consider something else?

For a mid-century ranch or a standard two-story tract home in Cupertino with existing ductwork, Tempstar is a solid choice at a realistic price point. It runs on Carrier engineering, so the heat exchanger, compressor, and board components are the same platform as more expensive badges. The tradeoff is a smaller local dealer network, which is why having an independent certified tech matters more with this brand than with something sold through a major chain. If you are weighing options at replacement time, we will give you a straight comparison at the estimate.
What exactly does the $75 diagnostic cover, and what warranty comes with the work?

The $75 covers a full system diagnosis: we pull fault codes, run electrical tests on the components in question, and tell you exactly what failed and why before quoting anything. If you approve the repair that same visit, the $75 comes off the bill. Parts and labor on that repair are covered for one year. If you are doing a full replacement instead, new equipment installations carry a 10-year parts warranty and 10-year labor warranty.

Need Tempstar service in Cupertino?

Tell us what is broken. We will quote it.