You're based in San Ramon. Is Saratoga a normal service area for you?

Yes, Saratoga is a regular stop. It's roughly 30 to 35 minutes from our San Ramon base depending on traffic on 680 and 85, and we service the full South Bay corridor including Saratoga, Los Gatos, and the surrounding area. No extra trip fee for Saratoga.

Tempstar isn't a brand I see advertised much. Is it solid equipment for a Saratoga home?

Tempstar is built on the same Carrier engineering platform as Heil and Comfortmaker. The compressors, heat exchangers, and control boards come from the same supply chain as a Carrier unit. What you give up is the badge and the big dealer network behind it. For a mid-century ranch on a street like Herriman or Cox, where someone put in a ducted system years ago and wants a reliable replacement without the Carrier price premium, Tempstar is a legitimate choice. The QuietComfort line is particularly common in these installations.

What does the $75 diagnostic actually include, and what warranty covers the repair afterward?

The $75 covers a full system diagnosis: pulling fault codes, checking electrical components, measuring refrigerant pressures or combustion performance depending on what you have, and giving you a written explanation of what failed and why. If you approve the repair, that $75 comes off the total. Repairs we perform carry a one-year parts and labor warranty. If the same failure comes back inside that year, we come back at no charge.

TEMPSTAR · SARATOGA

Service · All Tempstar Models

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

Tempstar furnace, heat pump, and AC repair in Saratoga, where the foothills hold summer heat longer than most South Bay neighborhoods expect.

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

Call (925) 999-4095

Tempstar in Saratoga

Tempstar heating and cooling in Saratoga.

Saratoga sits at the base of the Santa Cruz Mountains, and that position gives it a split personality in terms of HVAC load. The older hillside neighborhoods and the mid-century ranch tracts along Saratoga-Sunnyvale Road both see real summer heat, warmer and drier than bayside communities, while winter nights drop enough to put gas furnaces through their paces. Tempstar shows up in these homes fairly often, usually installed by a smaller independent contractor. The equipment is genuine Carrier-platform hardware under a different label, so it holds up well, but it ages the same way any Carrier-family unit does: capacitors and contactors wear down after several hot seasons, ignition systems get finicky, and inducer motors eventually reach the end of their run.

When I diagnose a Tempstar system, I start by pulling fault codes from the control board. The QuietComfort gas furnaces log ignition lockouts and pressure-switch faults in LED blink sequences, and the communicating variable-speed models store more detailed fault history I can read directly. I do not guess and swap parts. On the cooling side, Saratoga summers push condensers hard, so I measure capacitor microfarad values under load rather than just eyeballing them, and I check refrigerant charge against the nameplate conditions for the actual outdoor temperature that day. A unit short-cycling in 95-degree heat can look like a refrigerant problem when it is really a high-head-pressure trip from a dirty condenser coil or a failing contactor drawing too many amps.

Bay Area HVAC Service is our HVAC division, operating out of San Ramon. The diagnostic fee is $75 and we waive it entirely when the repair goes forward. You get a written quote before we touch anything. Our technicians hold EPA Section 608 Universal refrigerant certification, and the company is licensed under CSLB 1136642. Repair work carries a one-year warranty. If you are looking at a full system replacement, installations come with 10 years on parts and 10 years on labor. On rebates, we confirm what the utilities and any manufacturer programs are actually paying at the time of your estimate rather than quoting a number that may have changed.

Common repairs we do

What we close on the truck.

Hot Surface Igniter Failure. The most common furnace no-heat call I get on Tempstar units is a cracked or open hot surface igniter. The furnace calls for heat, the inducer spins up, the pressure switch closes, and then nothing happens because the igniter never gets hot enough to light the burners. The board logs the lockout and shuts everything down after a couple of attempts. I confirm with a resistance check rather than assuming, because a weak igniter can read in range cold and still fail under operating voltage. Replacement uses the correct silicon nitride igniter for the specific Tempstar model, not a generic substitute.
Flame Sensor Cutout After Ignition. On a fouled flame sensor, the burners light normally and then cut out within a few seconds. The board is reading insufficient microamp signal through the rod and treating it as a failed ignition. This shows up more often after a furnace sits unused through a mild Saratoga spring and summer, because oxidation builds on the sensor rod. Cleaning the rod and verifying the microamp reading in operation fixes this the majority of the time. If the rod is pitted or the wire connection is corroded, I replace the sensor outright.
Condenser Capacitor and Contactor Wear. Saratoga summers are warm enough that condensers run long daily cycles from June through September, and that accelerates wear on run capacitors and contactors. A failing run capacitor causes the compressor or fan motor to draw high amps, run hot, and eventually trip the breaker or high-pressure limit. A pitted contactor can cause hard starts, humming, or intermittent failures that are hard to reproduce in the morning when temperatures are mild. I test capacitor values under load with a meter rated for that measurement, and I inspect contactor contact surfaces before a homeowner ends up with a full compressor failure on a 95-degree afternoon.

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 Saratoga questions, answered.

You're based in San Ramon. Is Saratoga a normal service area for you?

Yes, Saratoga is a regular stop. It's roughly 30 to 35 minutes from our San Ramon base depending on traffic on 680 and 85, and we service the full South Bay corridor including Saratoga, Los Gatos, and the surrounding area. No extra trip fee for Saratoga.
Tempstar isn't a brand I see advertised much. Is it solid equipment for a Saratoga home?

Tempstar is built on the same Carrier engineering platform as Heil and Comfortmaker. The compressors, heat exchangers, and control boards come from the same supply chain as a Carrier unit. What you give up is the badge and the big dealer network behind it. For a mid-century ranch on a street like Herriman or Cox, where someone put in a ducted system years ago and wants a reliable replacement without the Carrier price premium, Tempstar is a legitimate choice. The QuietComfort line is particularly common in these installations.
What does the $75 diagnostic actually include, and what warranty covers the repair afterward?

The $75 covers a full system diagnosis: pulling fault codes, checking electrical components, measuring refrigerant pressures or combustion performance depending on what you have, and giving you a written explanation of what failed and why. If you approve the repair, that $75 comes off the total. Repairs we perform carry a one-year parts and labor warranty. If the same failure comes back inside that year, we come back at no charge.

Need Tempstar service in Saratoga?

Tell us what is broken. We will quote it.