Do you actually service San Ramon, or is that just a landing page?

We are based in San Ramon. Our shop and our techs are here in the Tri-Valley. No subcontractors, no dispatch from the East Bay or Livermore. Same or next-day appointments are realistic for most GrandAire calls because we are already in the area.

Is GrandAire equipment worth repairing, or should I replace it?

That depends on age and what failed. GrandAire is a budget Carrier-platform unit, which means the equipment is plain but the parts are not hard to find and are not expensive. A capacitor or flame sensor on a seven-year-old unit is worth fixing. A cracked heat exchanger on a fifteen-year-old furnace in a San Ramon rental is a different conversation. We give you the honest picture at the estimate and let you decide. We also confirm what rebates and incentives are actually available on replacements at that time, since those programs change.

What does the $75 diagnostic cover and what kind of warranty do I get on the repair?

The $75 covers a full diagnostic: we read board fault codes, check electrical, measure temperatures and pressures as needed, and tell you exactly what is wrong and what it costs to fix before we do anything. If you go ahead with the repair, that $75 is credited against the bill. Parts and labor on the repair are warranted for one year. If you end up replacing the system instead, new installs carry a 10-year parts and 10-year labor warranty.

GRANDAIRE · SAN RAMON

Service · All GrandAire Models

GrandAire Heat Pump, AC & Furnace Repair · San Ramon, CA

GrandAire heat pump, AC, and furnace repair in San Ramon, where Tri-Valley summers push budget condensers hard.

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

Call (925) 999-4095

GrandAire in San Ramon

GrandAire heating and cooling in San Ramon.

San Ramon sits inland enough that summers regularly push into the mid-90s, and the housing stock in neighborhoods like Windemere and Gale Ranch runs heavily toward newer tract construction where builders spec'd value-tier equipment to hit a price point. GrandAire furnaces and condensers show up regularly in those homes, in ADUs behind older ranchers off Bollinger Canyon, and in rental fourplexes where landlords needed a working system without a premium unit price. We see these units constantly out here.

When a GrandAire board throws a fault code, we read it off the LED sequence on the control board before we touch anything else. This platform shares Carrier-family diagnostics, so codes are reliable and we trust them. On heat pumps we check the reversing valve operation and the defrost board before assuming the refrigerant circuit is the problem, because a stuck valve reads like a low-charge condition and leads to unnecessary work if you skip that step.

Bay Area HVAC Service runs out of San Ramon, so there is no dispatch lag for Tri-Valley calls. Diagnostic is $75 and we waive it when you approve the repair. You get a written quote before we start. Our technicians hold EPA Section 608 Universal certification and we operate under CSLB license 1136642. Repairs carry a one-year warranty. New installs are backed by 10 years on parts and 10 years on labor.

Common repairs we do

What we close on the truck.

Igniter failure on a GrandAire gas furnace. Silicon nitride igniters on these furnaces are cheap to buy and cheap to fail, usually between years three and six. The unit tries to light, the inducer runs, the igniter glows briefly or not at all, and the board locks out after two or three attempts. You get a blinking fault code and a cold house. We confirm igniter resistance is out of spec, swap it, and test through a full heat cycle. Parts are Carrier-family and almost always available same or next day.
Flame sensor short-cycling the burner. A dirty or oxidized flame sensor is the most common no-heat call on these furnaces after the igniter. The burner lights, runs for a few seconds, drops out, and the sequence repeats until the board locks. On older GrandAire installs in San Ramon homes that have gone a few seasons without a tune-up, carbon buildup on the sensor rod is usually the culprit. We clean or replace the sensor, verify microamp signal, and check the heat exchanger for cracks while the furnace is apart.
Capacitor and contactor failure on a GrandAire AC condenser. Run capacitors and contactors are the first things to go on single-stage condensers during Tri-Valley heat waves, when outdoor units cycle hard day after day through July and August. A failing capacitor shows up as a compressor that hums but will not start, or a condenser fan that spins slowly and runs hot. A pitted contactor causes hard starts or intermittent cooling. Both are same or next-day parts on this platform, and we replace them as a pair when one is already worn, since the second usually follows within a season.

Models we service

GrandAire product lines.

Gas furnaces (value single-stage)
Heat pumps and AC condensers
Air handlers and coils
Builder and supply-house equipment
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

GrandAire service in neighboring cities.

FAQ

GrandAire in San Ramon questions, answered.

Do you actually service San Ramon, or is that just a landing page?

We are based in San Ramon. Our shop and our techs are here in the Tri-Valley. No subcontractors, no dispatch from the East Bay or Livermore. Same or next-day appointments are realistic for most GrandAire calls because we are already in the area.
Is GrandAire equipment worth repairing, or should I replace it?

That depends on age and what failed. GrandAire is a budget Carrier-platform unit, which means the equipment is plain but the parts are not hard to find and are not expensive. A capacitor or flame sensor on a seven-year-old unit is worth fixing. A cracked heat exchanger on a fifteen-year-old furnace in a San Ramon rental is a different conversation. We give you the honest picture at the estimate and let you decide. We also confirm what rebates and incentives are actually available on replacements at that time, since those programs change.
What does the $75 diagnostic cover and what kind of warranty do I get on the repair?

The $75 covers a full diagnostic: we read board fault codes, check electrical, measure temperatures and pressures as needed, and tell you exactly what is wrong and what it costs to fix before we do anything. If you go ahead with the repair, that $75 is credited against the bill. Parts and labor on the repair are warranted for one year. If you end up replacing the system instead, new installs carry a 10-year parts and 10-year labor warranty.

Need GrandAire service in San Ramon?

Tell us what is broken. We will quote it.