Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
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AfterFast, Reliable Furnace Repair Across Alamo
Most furnace repairs in Alamo run $150 to $700, and we can usually get a technician to your door the same day you call. That’s the honest range, and it’s the number we work from when we hand you a written price before any work begins. If you’re near the Alamo Plaza or tucked into one of the quiet streets off Stone Valley Road and your heat won’t start, call (361) 306-9515 now. We answer live, 24/7, and we’ll tell you exactly when to expect us.
Alamo’s housing stock is older than what you’ll find in neighboring Danville and San Ramon. Many homes here still run their original furnaces, and that changes what a repair actually involves. We’ll get into that below, including what a proper tune-up catches and when a repair stops making financial sense.
Why Dalton Heating & Air Is Alamo’s Preferred Furnace Repair Company
We hold ourselves to a standard most Alamo homeowners tell us they’ve never seen enforced: the Garrison Standard. Since 2003, every Dalton Heating & Air job has included a written price before any work starts, a written guarantee on every repair, and a free return visit if the repair fails within the guarantee period. There’s no upgrade fee for that. It’s how the company operates, on every single call.
Our technicians are background-checked, uniformed, and factory-trained to service nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. When you schedule a repair in Alamo, you’ll know the technician’s name before they arrive, and they’ll arrive inside the stated window. The Garrison Code isn’t a slogan. It’s the list we’re measured against: arrive on time, price in writing, do the job by the book, leave the site clean, stand behind the work for a full year.
Marco Benitez leads the team that serves Alamo, and he’s built the crew around one idea: a homeowner should never have to guess what a repair will cost or whether it will hold. We dispatch from our San Francisco Bay Area office, with crews working throughout the Alamo area daily.
Key Takeaways:
- Furnace repairs in Alamo typically run $150 to $700, with the exact price in writing before work starts.
- Every repair carries a full-year written guarantee, with a free return visit if it fails.
- We service all nine major residential HVAC brands, including Carrier, Trane, Lennox, and Goodman.
- Live phone support is answered by a person, not a voicemail queue, 24 hours a day.
Gas Furnace Repair in Alamo
Gas Furnace Repair in Alamo is the most common call we run from November through February. The work involves diagnosing airflow, ignition, gas valve operation, blower performance, and heat exchanger condition, then replacing the specific part that failed rather than selling you a system you don’t need. The range for most gas furnace repairs in Alamo is $150 to $700, depending on the part. A bad ignitor or flame sensor lands on the lower end. A blower motor or gas valve lands higher.
Ignition and gas valve work
When an Alamo furnace clicks but won’t light, the problem is usually the ignitor or flame sensor. These are straightforward repairs, often under $300. If the gas valve itself has failed, you’re looking at the middle-to-upper end of the $150 to $700 range. Either way, we’ll test the full ignition sequence, confirm the gas pressure is correct, and leave you with a written invoice for exactly what was done.
Blower motor and airflow diagnosis
Older Alamo homes frequently have undersized or leaky ductwork, and that shows up as a blower motor working harder than it should. High static pressure pushes the furnace into high-limit lockouts, which owners often mistake for a thermostat problem. A failing blower motor or weak capacitor is a $150 to $700 repair, and it’s often the right call on a unit that’s 15 years old but otherwise sound.
Furnace Tune Up in Alamo
Furnace Tune Up in Alamo is the service we recommend every fall, before the first cold snap hits the hills along Danville Boulevard. It costs $80 to $200, and it includes a full inspection of the heat exchanger, burners, ignition, gas pressure, airflow, and safety controls. The point is not to sell you a repair. The point is to find the small problem before it becomes a no-heat night.
What the tune-up includes
We check the heat exchanger for cracks, test the ignitor and flame sensor, measure gas pressure, inspect the blower motor and capacitor, and evaluate static pressure at the return. In Alamo’s older homes, we spend real time on static pressure, because undersized ducts are the hidden cause of a lot of short-cycling and lockout behavior. You get a written report of what we found, what’s working, and what’s worth watching.
Why annual is the right cadence
Furnaces in Alamo run for months at a stretch during cold winters, and original-duct homes put extra load on the blower. A $80 to $200 annual tune-up catches capacitor wear, flame sensor buildup, and early heat exchanger stress. Technicians at Dalton are not paid on what they sell. If the furnace is healthy, that’s what the report says.
Trusted Brands We Service in Alamo
We repair furnaces from all nine major residential brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. In Alamo specifically, we see a lot of Carrier and Trane equipment from the 1990s and early 2000s, plus Goodman and Rheem units that were installed as replacements over the last decade. We stock common parts for these systems locally, which means a shorter wait for Alamo customers. When a part isn’t on the truck, we can usually have it the same day and back on your furnace.
Common Furnace Repair Problems We See in Alamo Homes
- High-limit lockouts from undersized or leaky ducts. Alamo’s original homes often have duct runs that were never right-sized, and when static pressure climbs, the furnace shuts itself down on the high-limit switch. Owners replace thermostats first. The thermostat was never the problem.
- Short-cycling from a weak capacitor or failing blower motor. On units more than 15 years old, a motor that can’t spin up properly will cycle the furnace on and off. A $150 to $700 repair fixes this correctly, often extending the furnace’s life by years.
- Heat exchanger cracks in pre-1990s furnaces. Many Alamo homes still have their original furnaces, and cracked heat exchangers are the serious failure we check for on every call. This turns a simple tune-up into a replacement conversation once we run a load calculation.
- Failing ignitors and dirty flame sensors. On cold Alamo mornings, the furnace tries to light and gives up. Ignitor replacement is one of the most common sub-$300 repairs we do, and the fix is usually same-day.
Our Furnace Repair team sees these patterns on a weekly basis in Alamo. If you’re dealing with any of this, the first step is a real diagnosis, not a guess.
Pricing for Furnace Repair in Alamo, CA
Here’s what furnace work actually costs in Alamo, in writing. Our repair range is $150 to $700, and a full Furnace Repair in Alamo service call includes diagnosis, a written quote before any work starts, and a full-year written guarantee on the repair itself.
| Service | Typical Cost in Alamo |
|---|---|
| Furnace Repair | $150 – $700 |
| Furnace Tune-Up | $80 – $200 |
| AC Repair | $150 – $650 |
| AC Installation | $3500 – $7500 |
What moves a furnace repair toward the higher end of the range is the part itself: blower motors and gas valves cost more than ignitors and flame sensors. What moves it down? Catching the issue early, before a failing motor damages other components. We give you the exact price in writing before any work begins, so the number you approve is the number you pay. Estimates are free. Call (361) 306-9515 to schedule.
We Also Serve Cities Near Alamo
If you’re in Walnut Creek, Moraga, Lafayette, or Danville, we run calls there every day too. Our technicians live and work throughout the East Bay, so the same written pricing and full-year guarantee apply across the area. We coordinate dispatch from our Bay Area office and schedule Alamo jobs alongside the neighboring cities to keep response times tight.
Serving Alamo, CA - Our Local Coverage Area
We’re based in the Alamo area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Furnace Repair in Alamo
If your Alamo furnace is under 15 years old and the repair is under $700, repairing is almost always the right call. The math changes when the heat exchanger is cracked, especially in Alamo’s original pre-1990s furnaces, or when repair costs approach a third of replacement. We run a load calculation before any replacement recommendation, so the new system is sized for your actual house, not a rule of thumb. Call (361) 306-9515 and we’ll give you honest repair-versus-replace numbers for your specific furnace.
A furnace tune-up in Alamo includes inspection of the heat exchanger, burners, ignition system, gas pressure, blower motor, capacitor, and static pressure at the return, plus a written report of everything we found. It costs $80 to $200. On Alamo’s older homes with original ductwork, the static pressure check is the part that catches hidden problems before they become no-heat nights. Call (361) 306-9515 to book yours before the cold sets in.
A short-cycling furnace in Alamo is usually a failing blower motor, a weak capacitor, or high static pressure from undersized or leaky ducts. The furnace starts, heats up, hits the high-limit switch, and shuts down. Many homeowners swap the thermostat first, but the thermostat is rarely the problem. A proper diagnosis costs a service call, and the repair is typically $150 to $700. Call (361) 306-9515 and we’ll find the actual cause.
Yes. A cracked heat exchanger can leak carbon monoxide into your home, and this is a genuine safety issue, not a scare tactic. Homes in Alamo that still run original pre-1990s furnaces are exactly the ones where we find this on tune-ups. If we find a crack, we’ll shut the furnace down and walk you through replacement options with a proper load calculation. This is a job for a trained professional, not a DIY fix. Call (361) 306-9515 if you suspect a problem.
We repair Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard furnaces in Alamo. We see a lot of Carrier and Trane units from the 1990s and 2000s in Alamo’s original homes, plus newer Goodman and Rheem replacements. We stock common parts locally, so most repairs are same-day. Call (361) 306-9515 with your model number and we’ll confirm coverage before we arrive.
Call Dalton Heating & Air for Furnace Repair in Alamo
If your furnace won’t start, won’t stay lit, or is short-cycling in your Alamo home, call (361) 306-9515. You’ll get a live person, a straight answer on when we can be there, and a written price before any work begins. Marco Benitez and the Dalton team serve Alamo with the same standard on every call: arrive on time, diagnose honestly, price in writing, and guarantee the repair for a full year. If the work doesn’t hold, we come back at no charge. That’s The Garrison Standard, and we hold ourselves to it on every job in Alamo.
Written by Marco Benitez, Owner at Dalton Heating & Air, serving Alamo since 2003.