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 Heights
A furnace that won’t fire in an Alamo Heights winter isn’t something to wait out. Most furnace repairs in this city run $150 – $700 depending on the part, and our crews reach most Alamo Heights homes the same day you call. We work on older pier-and-beam houses near Olmos Basin, newer builds off Broadway, and everything between. Call (361) 306-9515 and you’ll get a live person, a scheduled window, and a written price before any tool comes off the truck.
What makes furnace work in Alamo Heights different from other parts of the San Antonio metro is the housing stock itself. A large share of these homes were built before 1955, sitting on pier-and-beam foundations with ductwork that was sized for a different era. When a furnace fails here, the answer is rarely just “swap the part.” More often, the part failed because the system has been fighting duct static pressure it was never designed to handle. That’s the local knowledge that keeps us from selling you a repair that won’t hold.
Why Dalton Heating & Air Is Alamo Heights’s Preferred Furnace Repair Company
We answer the phone with a person, not a voicemail tree, at every hour of the day. For homeowners around Alamo Heights Boulevard or the streets branching off Nacogdoches Road, that matters when the house is 48 degrees at 6 a.m. and no one else picks up.
Every Dalton Heating & Air technician arrives in uniform, background-checked, and factory-trained on nine major residential brands including Trane, Lennox, and Goodman. We don’t send a salesperson first; we send a tech who can diagnose, explain, and repair. The price is written before any work starts, and the repair is guaranteed in writing for a full year. If it fails in that time, we return at no charge. That’s The Garrison Standard, and it’s been the operating rule for this Garrison Partners company since 2003.
Marco Benitez leads our team with one instruction: treat every Alamo Heights home like it’s your own. That means no price shifting at the door, no upsell pressure, and a clean work site when we leave. The local feedback follows from that discipline.
Emergency Furnace Repair in Alamo Heights
Emergency Furnace Repair in Alamo Heights usually means one of two situations: the furnace won’t ignite at all, or it ignites and shuts off before the house warms. Both are urgent in a city where winter nights drop below freezing and older homes lose heat fast through uninsulated pier-and-beam floors. Our crews respond to no-heat calls across Alamo Heights the same day, often within hours. The cost stays within the $150 – $700 range you’d expect for any furnace repair; the urgency doesn’t change the price.
No-Heat Diagnosis
A no-heat call starts with a full system check, not just a part guess. On older Alamo Heights furnaces, the culprit is often a cracked heat exchanger or a blower motor stressed by duct static pressure, not a simple electrical fault. We test, we show you what we found, and we write the repair price down before we touch it.
Ignition and Safety Failures
When a furnace ignites and cuts out after a minute or two, the issue could be a dirty flame sensor, a failing ignitor, or something more serious like a heat exchanger crack. With natural gas in the equation, we treat any ignition fault as a safety matter until proven otherwise. If the heat exchanger is compromised, we’ll tell you plainly and give you honest repair-versus-replace numbers, not a pressure pitch.
Furnace Maintenance in Alamo Heights
Furnace Maintenance in Alamo Heights isn’t a luxury service; it’s how you avoid the 3 a.m. no-heat call. A tune-up runs $80 – $200 and includes the same inspection sequence on every visit: heat exchanger check, burner cleaning, ignition and flame sensor testing, thermostat calibration, and blower motor amp draw. For homes in Alamo Heights with original ductwork, we also measure static pressure to see whether the system is working harder than the design allows. Undersized returns are the quiet killer of heat exchangers in this city.
Seasonal Tune-Up
We recommend a tune-up before the first real cold snap hits the Hill Country side of the metro, not after. A calibrated thermostat, a clean flame sensor, and a capacitor test take under an hour and catch the failures that strand you overnight. You get a written report of what we found and what it means. Our technicians are not paid on what they sell, so the report is diagnostic, not a sales deck.
Static Pressure and Duct Health
Homes around Alamo Heights often run furnaces with ductwork that hasn’t been resized since the original gas floor furnace was replaced. High static pressure shortens blower motor life and causes heat exchangers to crack from repeated thermal fatigue. During a maintenance visit, we measure it and explain what the numbers mean for your system’s lifespan.
Trusted Brands We Service in Alamo Heights
We service furnaces from Trane, Lennox, Goodman, and Rheem, and our technical training covers all nine major residential brands. For Alamo Heights homeowners, that means no waiting on a dealer-only part to ship from a regional hub. We keep common ignition components, flame sensors, pressure switches, and blower parts on our trucks, and we can source brand-specific heat exchangers and control boards on short turnaround. The old Goodman in a 1950s cottage off Broadway gets the same factory-spec repair as the newer Lennox in a larger home near the country club.
Common Furnace Repair Problems We See in Alamo Heights Homes
- Cracked heat exchangers from chronic short-cycling. Homes with original undersized return ducts force the furnace to cycle on and off dozens of times a day. The repeated thermal expansion eventually cracks the metal, and then you have a carbon monoxide risk in the house.
- Blower motor failures from high static pressure. When a 1950s duct system was never resized for a modern high-capacity furnace, the blower works against resistance it wasn’t built for. Motors that should last 15 years burn out in half that time.
- Ignition faults from neglected flame sensors and ignitors. Systems that haven’t had a tune-up in years drift out of calibration. The flame sensor fouls, the ignitor weakens, and the furnace locks out exactly when you need it most.
- Thermostat calibration drift on older mechanical controls. A thermostat that’s off by even three or four degrees forces the furnace to run longer or shorter than it should. On older Alamo Heights systems, that drift accelerates wear on every downstream component.
Pricing for Furnace Repair in Alamo Heights, TX
Furnace repair in Alamo Heights runs $150 – $700 for most jobs. The spread comes down to the part: an ignitor or flame sensor sits at the low end; a blower motor, gas valve, or heat exchanger repair lands higher. You’ll get the exact number in writing before any work begins, and that number does not change at the door.
| Service | Typical Price Range in Alamo Heights |
|---|---|
| Furnace Repair | $150 – $700 |
| Tune-Up | $80 – $200 |
| AC Repair | $150 – $650 |
| AC Installation | $3,500 – $7,500 |
We packed a no-heat call from a 1948 pier-and-beam home near the Olmos Basin side of Alamo Heights last winter. The homeowner’s Carrier furnace would ignite and then cut out after about 90 seconds. Our tech found the real story: a cracked heat exchanger, exhausted from months of short-cycling because the return duct was undersized for the tonnage. We replaced the heat exchanger, corrected the return static pressure, and the system ran clean through the next cold snap without a single lockout. That’s the difference between swapping a part and fixing the problem. Call (361) 306-9515 for a free estimate.
You may be wondering whether an older Alamo Heights furnace with original ductwork is worth repairing or whether it’s time to replace. The honest answer requires numbers, not a guess: a proper load calculation tells you what the house actually needs, and a static pressure test tells you what the ductwork can actually deliver. We run those numbers on every repair we do where replacement is a real option. The decision should be based on arithmetic, not a sales conversation.
We Also Serve Cities Near Alamo Heights
Our Furnace Repair team takes care of homes across the San Antonio metro, and we also schedule work in nearby cities including Houston, San Antonio, Dallas, and Fort Worth. If you’re in Alamo Heights and ready to get the furnace looked at, our Furnace Repair in Alamo Heights coverage includes the neighborhoods around Broadway, Nacogdoches Road, and the Olmos Basin.
Serving Alamo Heights, TX - Our Local Coverage Area
We’re based in the Alamo Heights 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 Heights
Yes, if your home was built before 1955 with original ductwork, a load calculation is the only way to know whether a replacement furnace will actually work in your house. Without it, you risk paying for a high-capacity unit that fights undersized returns and fails early. Call (361) 306-9515 and we’ll run the calculation as part of any replacement estimate.
SEER2 is the updated efficiency rating that reflects real-world duct losses and static pressure, which matters a lot in older Alamo Heights homes. A higher SEER2 number means lower operating cost, but only if the ductwork can deliver the airflow the rating assumes. We’ll show you the bill impact in dollars, not just efficiency percentages.
It could be, but it’s just as likely a dirty flame sensor or a bad ignitor. In Alamo Heights homes with original ducts, short-cycling can be a symptom of heat exchanger cracking from repeated thermal fatigue. The only way to know is a combustion and safety inspection. We’ll check the heat exchanger and show you what we find, with photos.
Same day in most cases. We dispatch from the San Antonio office to Alamo Heights neighborhoods including the Olmos Basin area and the streets off Broadway, and our techs carry common furnace parts on the truck. Call (361) 306-9515 and you’ll talk to a live person who can schedule the window, not a callback queue.
A tune-up is worth it if the system is still safe and the heat exchanger passes inspection. We’ll tell you straight: if the furnace is 25 years old with a cracked exchanger, spending $80 – $200 on a tune-up is delaying the inevitable. If the system is sound, a tune-up extends its life and catches small problems before they strand you. We give you the honest read either way.
Written by Marco Benitez, Owner at Dalton Heating & Air, serving Alamo Heights since 2003.