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

Dublin is close to us, maybe fifteen minutes depending on traffic through the 580 corridor. We cover all of the Tri-Valley including Dublin regularly, so it is not a special trip and there is no additional travel charge.

Is Tempstar equipment worth repairing, or should I be looking at a replacement given Dublin summers?

It depends on the age and what failed. Tempstar runs on the same Carrier-engineered platform as Heil and Comfortmaker, so the mechanical bones are solid. If the heat exchanger is intact and the compressor is healthy, a repair often makes more sense than replacing a fundamentally sound system. Where we see the math shift is when the unit is past 15 years, has already had major refrigerant-side work, and the efficiency gap to current equipment is large enough that rebates and operating savings change the picture. We tell you what we find and what we think makes sense, and you decide.

What does the $75 diagnostic actually include, and what warranty comes with the repair?

The $75 covers a full diagnostic visit: we read the fault codes, test the components in question, identify the root cause, and give you a written quote on the spot. If you approve the repair that day, the $75 comes off the bill entirely. Work we perform is covered by a one-year parts and labor warranty. If the job turns into a full equipment install, that carries a ten-year warranty on both parts and labor.

TEMPSTAR · DUBLIN

Service · All Tempstar Models

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

Tempstar furnace, heat pump, and AC repair in Dublin, where Tri-Valley summers push these units hard and the inland heat separates the well-maintained systems from the ones that quit in August.

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

Call (925) 999-4095

Tempstar in Dublin

Tempstar heating and cooling in Dublin.

Dublin sits deep in the Tri-Valley, far enough inland that summer afternoons regularly hit triple digits around Fallon Road and the newer Positano and Schaefer Ranch neighborhoods. Most of the housing stock here is 1990s and 2000s tract construction, ducted forced-air systems throughout, and Tempstar shows up with some regularity in those homes. Contractors liked the brand because it priced well and ran on Carrier-engineered components, so there are a lot of these furnaces and condensers working in Dublin garages and utility closets right now.

When we come out on a Tempstar call, we pull board fault codes first and cross-reference the control board history before we touch anything. On the cooling side we check static pressure in the duct system because a lot of those Tri-Valley tract homes got undersized returns, and that restriction accelerates compressor wear regardless of how good the equipment is underneath. On the heating side we do a combustion analysis before we call a heat exchanger clean or a flame sensor cleaning done, not only a visual pass.

Bay Area HVAC Service is our HVAC division, operating out of San Ramon, and Dublin is a straightforward run from us. The diagnostic fee is $75, and we waive it completely if you move forward with the repair the same or next day. Nothing gets started without a written quote in your hand first. We carry EPA Section 608 Universal certification for any refrigerant work, and we operate under CSLB license 1136642. Repairs are backed by a one-year warranty; if we install new equipment, parts and labor are covered for ten years.

Common repairs we do

What we close on the truck.

Hot Surface Igniter Failure. The silicon nitride igniters on Tempstar gas furnaces are the same part used across the Carrier/ICP lineup, and they crack under thermal cycling stress after a few seasons of Dublin's cold-to-hot swings. The symptom is a no-heat call where the inducer runs, the pressure switch proves, but the burners never light. The control board logs a lockout and flashes the ignition fault code. We confirm the igniter is open with a resistance check, replace it with the correct OEM spec, and verify flame establishment through two full cycles before we leave.
Flame Sensor Fouling and Short-Cycle Lockout. Tempstar furnaces will light and then drop out within a few seconds when the flame sensor rod is coated with oxidation or combustion residue, because the microamp signal falls below the board's threshold before the call for heat is satisfied. In Dublin's dusty summer-to-winter transition, where the system sits idle for months and then runs hard, sensor fouling is a routine finding. We clean the rod, verify the microamp reading is within the manufacturer's acceptable range under live fire, and check the ground path on the sensor circuit, which is a failure point that gets missed when techs just swap the rod.
Condenser Capacitor and Contactor Wear on Cooling Units. The run capacitor and contactor on a Tempstar condenser see real abuse during a Dublin summer when the unit is cycling hard through 100-degree afternoons for weeks at a stretch. A weak capacitor shows up as slow compressor startup, high amp draw, and eventually a tripped breaker or a unit that hums and refuses to run. The contactor pits and burns from the switching load over time. We test capacitance against rated value, check contactor contact resistance, and replace both if either is marginal, because pulling a truck back out two weeks later for the second half of a failing component pair is a waste of everyone's time.

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 Dublin questions, answered.

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

Dublin is close to us, maybe fifteen minutes depending on traffic through the 580 corridor. We cover all of the Tri-Valley including Dublin regularly, so it is not a special trip and there is no additional travel charge.
Is Tempstar equipment worth repairing, or should I be looking at a replacement given Dublin summers?

It depends on the age and what failed. Tempstar runs on the same Carrier-engineered platform as Heil and Comfortmaker, so the mechanical bones are solid. If the heat exchanger is intact and the compressor is healthy, a repair often makes more sense than replacing a fundamentally sound system. Where we see the math shift is when the unit is past 15 years, has already had major refrigerant-side work, and the efficiency gap to current equipment is large enough that rebates and operating savings change the picture. We tell you what we find and what we think makes sense, and you decide.
What does the $75 diagnostic actually include, and what warranty comes with the repair?

The $75 covers a full diagnostic visit: we read the fault codes, test the components in question, identify the root cause, and give you a written quote on the spot. If you approve the repair that day, the $75 comes off the bill entirely. Work we perform is covered by a one-year parts and labor warranty. If the job turns into a full equipment install, that carries a ten-year warranty on both parts and labor.

Need Tempstar service in Dublin?

Tell us what is broken. We will quote it.