Heating & Furnace in Alamo — Same-Day Service, Done Right the First Time

Fast, Reliable Heating & Furnace Across Alamo

Heating and furnace repair in Alamo typically runs $150–$700, with most jobs completed same-day by our owner-supervised crew. If your furnace is short-cycling, blowing cold air, or not firing at all, call (855) 467-1888 and we’ll get a technician out to your Alamo home fast.

Call (855) 467-1888

We’ve been driving the winding roads of Alamo for 16 years, from the estate properties off Livorna Road to the custom builds near the Round Hill Country Club. Alamo isn’t a quick in-and-out town for us. Long service drives, detached workshops, and mechanical closets tucked into hillside garages mean our vans carry heavy-duty lift equipment and a wider parts inventory than standard outfits. Jason Trent, our owner and Field Supervisor, personally routes Alamo calls to ensure we’re prepared for whatever your property throws at us.

Why Stonegate Heating & Air California Is Alamo’s Preferred Heating & Furnace Company

Our reputation in Alamo is built on showing up prepared. Nearly 500 verified reviews at a 4.7-star average don’t happen by accident. They come from 16 years of sending experienced technicians who know that a “furnace in the basement” in Alamo often means a furnace in a hillside walk-out basement with limited access, or a mechanical room in a detached structure 200 feet from the main house.

Jason Trent supervises every project as Field Supervisor, not from an office in Sacramento. That means when we’re replacing an oversized original furnace in a 1970s custom estate off Miranda Avenue, he’s checking that the new unit actually fits the unusually tall closet without custom sheet-metal work. No surprises. No callbacks.

We’re certified on nine major brands — Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard — so we don’t waste your time with “we don’t service that model.” We stock common parts for Alamo’s most prevalent brands, and our familiarity with Contra Costa County’s inspection scheduling keeps permit jobs moving without the delays that trip up contractors accustomed to Danville or Walnut Creek’s city-run systems.

Our Heating & Furnace Services in Alamo

Furnace Repair

Alamo’s inland valley position means your furnace works harder than coastal Bay Area systems. Overnight winter temperatures drop into the 30s, and when that seized inducer motor or failed gas valve hits at 6 a.m., you need same-day service. Our Heating & Furnace team carries diagnostic equipment and common failure parts for the nine brands we service, so most Alamo repairs finish in a single trip. Typical furnace repair in Alamo: $150–$700.

Furnace Replacement

This is where Alamo’s housing stock gets interesting. Those sprawling custom estates built between 1965 and 1990 often have original furnaces rated for far more BTUs than the house actually needs, especially after energy-efficient window upgrades or insulation improvements shrunk the heating load. An oversized furnace short-cycles, wears out fast, and delivers uneven heat. We perform proper load calculations, size the replacement correctly, and handle Contra Costa County permits directly — not through a city office, because Alamo is unincorporated. Typical replacement cost depends on sizing and ductwork modifications; call for a free estimate.

Furnace Tune-Up

Alamo’s Diablo wind events blow particulates and smoke into the valley, clogging filters and stressing blowers. Our tune-ups inspect heat exchangers for cracks, test gas valve operation, check blower amp draw, and verify your thermostat’s cycle timing. For homes with furnaces in unconditioned attics or garages — common in Alamo’s custom builds — we pay special attention to combustion air supply and venting integrity. $80–$200, and we schedule to avoid your commute hours on Stone Valley Road or Danville Boulevard.

Heat Exchanger Inspection & Replacement

Cracked heat exchangers are a safety issue we don’t soft-pedal. In Alamo’s older furnaces, decades of short-cycling from oversized equipment creates thermal stress that accelerates metal fatigue. We inspect with cameras and combustion analyzers. If replacement makes sense, we’ll quote it against full furnace replacement so you can decide with real numbers. Sometimes a new heat exchanger buys you five more years. Sometimes the furnace is too far gone. We’ll tell you straight.

Ignitor Replacement & Gas Valve Repair

Hot surface ignitors fail every 3–5 years in Alamo’s climate, and gas valves can stick after years of minimal winter use. We stock both for major brands and can swap them out without a return trip. If your furnace clicks but won’t fire, or fires then shuts down within seconds, it’s often one of these two components.

Trusted Brands We Service in Alamo

We maintain factory training or equivalent experience on Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. In Alamo, we see a lot of Carrier and Bryant systems in the 1980s builds, plus newer Daikin and American Standard units in renovated estates. Our Sacramento warehouse stocks common heat exchangers, gas valves, and ignitors for these brands, and Jason Trent approves same-day parts runs for anything we don’t carry. No waiting three days for a “we’ll call you when it arrives” situation.

Common Heating & Furnace Problems We See in Alamo Homes

• Oversized furnaces short-cycling after partial renovations. That 120,000-BTU original unit made sense for a leaky 1978 custom home. After new windows and insulation, it’s blasting the house with too much heat too fast, shutting off before ducts warm up, then firing again minutes later. We see this constantly off Livorna Road and in the Stone Valley area.
• Heat loss through sprawling attic ductwork. Alamo’s estate homes have duct runs that would never fit in a standard tract house. Unsealed joints in 150°F+ attic air leak heated air into spaces you’ll never occupy, while bedrooms at the end of the run stay cold. Manual J load calculations and targeted sealing solve this.
• Detached workshop and outbuilding heaters. Alamo’s acreage properties often have studios, pool houses, or workshops with independent furnaces. Standard service vans can’t always reach these, and the units themselves are frequently older, improperly vented, or starved for combustion air. Our crew anticipates this with lift equipment and extended refrigerant lines or gas piping as needed.
• County permit confusion. Contractors based in incorporated cities sometimes assume Alamo has its own building department. It doesn’t. Contra Costa County handles everything, with different inspection slots and requirements. We’ve done enough Alamo jobs to know the county inspector’s schedule and common hold-ups.

Pricing for Heating & Furnace in Alamo, CA

We Also Serve Cities Near Alamo

Our service radius covers Saranap, Moraga, Walnut Creek, and Danville — though permit workflows differ in those incorporated cities versus Alamo’s county-based system. Same crew, same owner supervision, same nine-brand coverage. If you’re on the border between Alamo and one of these neighbors, we’ll confirm your exact service address and handle the paperwork accordingly.

FAQs — Heating & Furnace in Alamo