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.
Before
After
Before
After
Before
AfterFast, Reliable Furnace Repair Across San Antonio
When your furnace quits on a cold San Antonio night, you need a repair crew that knows this city’s older homes and won’t make you wait through a voicemail maze. Furnace repair in San Antonio typically costs $150-$700, and most jobs our team handles are diagnosed and fixed in a single visit. Call (747) 966-3037 and a live person answers, day or night.
We know San Antonio’s slab tract homes, the ductwork in their attics, and the hard Edwards Aquifer water that scales up condensate lines faster than almost anywhere else in Texas. That local knowledge means we find the real problem on the first trip, not the third. Our Furnace Repair team works in neighborhoods from the older northeast corridor near Fort Sam Houston out to newer builds on the northwest side, and we schedule calls around your family’s routine, not ours.
Why Meadowsweet Heating & Air Is San Antonio’s Preferred Furnace Repair Company
San Antonio homeowners call us because we treat the house like it’s our own. That means shoe covers and drop cloths on every visit, a written price before any work starts, and a photo of the clean-up sent before the crew leaves. If it’s not done right, our 365-Day Done Right Promise means we make it right, no runarounds and no fine print. Luis Serrano leads our team with one clear rule: every job ends with the home cleaner than we found it.
We answer the phone with a live person, 24 hours a day, 7 days a week. When a San Antonio furnace fails during a blue norther, you don’t have time for a callback queue. Our technicians are background-checked, uniformed, and follow a values code we call C.A.R.E.: Clean up like it’s their own home, Ask before moving anything, Respect the family’s time and quiet hours, and Explain the price before the work.
For families PCSing into or out of Joint Base San Antonio, we understand VA appraisal timelines and the documentation on-base housing contractors need. We’ve walked many military families through furnace inspections on tight schedules, and we’ll do the same for you.
Gas Furnace Repair in San Antonio
Gas Furnace Repair in San Antonio is what we do most often between late October and early March, when the city’s run of 85°F afternoons finally gives way to the cold fronts that sweep down the Balcones Escarpment. The job usually involves diagnosing why the furnace won’t ignite, why it’s short-cycling, or why it’s blowing cold air, then repairing the ignition system, gas valve, blower motor, or control board responsible. A typical gas furnace repair in San Antonio runs $150-$700, with the lower end covering ignitor and flame sensor replacements and the upper end involving blower motors, gas valves, or heat exchanger work.
Ignitor and Gas Valve Work
Houses built in the 1950s through the 1990s dominate San Antonio’s South Side, West Side, and northeast corridors, and their original gas furnaces have cycled tens of thousands of times. Hot surface ignitors crack, and gas valves wear out. We replace ignitors, flame sensors, and gas valves in single visits, and we always check combustion safety before we leave.
Blower Motor and Heat Exchanger Repairs
An undersized or failing blower motor strains the whole furnace, and in San Antonio’s leaky older ductwork, that strain often trips the high-limit switch long before anything is actually wrong with the heat exchanger. We test static pressure, inspect the heat exchanger, and replace blower motors or capacitors as needed. When a heat exchanger is genuinely cracked, we’ll show you exactly what we found and explain your replacement options in plain terms.
Furnace Tune Up in San Antonio
Furnace Tune Up in San Antonio should happen every fall, before the first real cold front, not after it. A tune-up here means testing the ignition sequence, checking the heat exchanger for cracks, cleaning the flame sensor, inspecting the gas pressure, and, critically for this city, flushing the condensate drain line and treating the pan. Hard Edwards Aquifer water scales those lines shut faster than most homeowners expect. A furnace tune-up in San Antonio costs $80-$200, and it’s the cheapest way to avoid a mid-January failure.
Pre-Winter Safety and Efficiency
We test the system under load, measure temperature rise, and check for carbon monoxide. We also inspect the duct connections in your attic, because a separated flex duct in a 150°F attic robs your furnace of airflow and tripping limit switches all winter. Our technicians are not paid on what they sell, so the report you get reflects what’s actually there.
Condensate Drain and Pan Treatment
San Antonio’s water is hard. We flush the drain line, treat the pan, and check the condensate trap for scale and sediment. Quarterly pan treatments are standard practice for San Antonio homes, not an occasional add-on. We’ll show you the scale we removed so you can see the difference.
Trusted Brands We Service in San Antonio
We service and repair Trane, Lennox, Goodman, and Rheem furnaces, among others, and our techs carry common parts for those brands on the truck so a San Antonio repair doesn’t mean waiting a week for a shipment. That’s real speed, not a marketing line. Whether your furnace is a 20-year-old Trane in a northeast-corridor tract home or a newer Goodman in a far-northwest subdivision, we know the brand’s failure points and we stock what’s needed to fix them. No brand is too old or too obscure for our crew to diagnose.
Common Furnace Repair Problems We See in San Antonio Homes
- Limit switch tripping from bad ductwork, not a bad furnace. In San Antonio’s 1950s-1990s slab tract homes, original flex ducts in 150-160°F attics separate at the collar or collapse over time. The furnace can’t push enough air, static pressure climbs, and the high-limit switch trips. A like-for-like furnace swap leaves every bit of that problem in place.
- Condensate pans and drain lines scaled shut by Edwards Aquifer water. The limestone aquifer that supplies San Antonio gives the city some of the hardest water in Texas. Condensate lines scale up, back water into the furnace cabinet, and rust the base. Quarterly pan treatments and annual flushes are standard here, not extra.
- Post-Uri freeze damage still showing up. Winter Storm Uri brought near-8°F lows to San Antonio in February 2021, and furnaces that survived have been failing in the years since. Cracked heat exchangers, frozen condensate traps, and undersized blower motors in older tract homes are all part of the post-Uri repair pattern we see regularly.
- Oversized furnaces short-cycling in leaky, single-zone duct systems. Many older San Antonio homes run one furnace for an entire slab floor plan with rooms that heat unevenly. An oversized furnace short-cycles, wastes gas, and cycles the limits constantly. The fix often starts with duct repair and airflow measurement before anyone talks about replacing the furnace.
Pricing for Furnace Repair in San Antonio, FL
Furnace repair in San Antonio runs $150-$700, depending on what’s failed. Here’s what you can expect. We provide a written price before any work starts, on every visit, so there’s no guessing and no surprise line items.
| Service | Typical San Antonio Price |
|---|---|
| Furnace Repair | $150-$700 |
| Gas Furnace Repair | $150-$700 |
| Furnace Tune Up | $80-$200 |
The biggest variable is whether the problem is a $40 ignitor or a $700 blower motor and gas valve job. A cracked heat exchanger changes the conversation entirely, and we’ll show you the crack with a borescope before recommending replacement. The estimate is free. Call (747) 966-3037 and we’ll give you a real number, not a vague range.
We Also Serve Cities Near San Antonio
Our Furnace Repair in San Antonio team also covers Wesley Chapel, Dade City, Zephyrhills, and Brooksville. If you’re in one of those surrounding communities, the same live-answer phone, background-checked technicians, and 365-Day Done Right Promise apply. We schedule across these areas without sending a different crew or changing the standard.
Serving San Antonio, FL - Our Local Coverage Area
We’re based in the San Antonio 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 San Antonio
Not necessarily. In San Antonio’s 1970s slab tract homes, the limit switch usually trips because the furnace can’t get enough airflow through old, leaky attic ductwork, not because the furnace itself is failing. A separated flex duct, a clogged filter, a failing blower capacitor, or an undersized blower motor all raise static pressure and trip the high-limit switch. We measure static pressure and inspect the ducts before recommending any repair, and we’ve saved many San Antonio families from a $5,000 furnace swap they didn’t need. Call (747) 966-3037 for a diagnosis, not a sales pitch.
San Antonio draws its water from the limestone Edwards Aquifer, and that water is among the hardest in Texas. The mineral scale builds up in the condensate drain line, blocks the water from leaving, backs it into the cabinet, and rusts the pan from the inside. We flush the line, treat the pan, and replace a rusted pan with a corrosion-resistant unit. Quarterly pan treatments are standard for San Antonio homes, not an occasional add-on.
Yes. February 2021 showed that San Antonio’s blue northers can push temperatures near 8°F, and furnaces, condensate traps, and exposed gas lines all failed that week. We install freeze-protection add-ons on outdoor condensate lines, insulate attic ductwork against cold-air intrusion, and recommend dual-fuel changeovers for homes that struggled through Uri. A freeze-protection check is part of every fall tune-up we do in San Antonio.
Furnace repair in San Antonio runs $150-$700, and a furnace tune-up costs $80-$200. The range exists because an ignitor or flame sensor is a quick, inexpensive fix, while a blower motor or gas valve replacement runs higher. We give a written price before any work starts, and the estimate is free. Call (747) 966-3037 for an exact quote on your furnace.
Yes. We work with military families through the PCS season every year, because Joint Base San Antonio’s June-July move cycle creates a predictable surge in pre-sale and move-in inspections that no other part of the state sees at this scale. We provide documented furnace inspections that satisfy VA appraisal and on-base contractor requirements, and we schedule around your moving timeline. Call (747) 966-3037 to get the inspection on the calendar before the summer rush.
What We Check Before Any Furnace Swap in San Antonio
A like-for-like furnace swap disappoints in San Antonio’s older slab tract homes, and here’s why. The original ductwork in those 1950s-1990s attics was undersized when it was installed and has leaked ever since. A single-zone system fights an unbalanced floor plan where the back bedroom is always cold and the living room is always warm. And the electrical panel often predates modern blower motor loads. If we just pull the old furnace and set a new one in the same spot, every one of those problems carries over. We check static pressure, duct leakage, zoning, and the panel before we recommend any furnace replacement in San Antonio.
On the city’s older northeast corridor near Fort Sam Houston, we pulled a Carrier gas furnace out of a 1970s attic where a 20-year-old flex duct had separated at the collar and the condensate pan was crusted solid with Edwards limestone scale. The limit switch was tripping from restricted static pressure, not a bad heat exchanger. We reconnected and resealed the flex, flushed the drain line, treated the pan, replaced the run capacitor, and the furnace cycled clean. A like-for-like furnace swap would have left every one of those problems in place.
That’s the difference between fixing the furnace and fixing the home. We do the second one. Call (747) 966-3037 for a furnace repair or tune-up in San Antonio, and we’ll show you what’s really happening in your attic, in your ductwork, and in your furnace before we ever ask you to spend a dollar.
Written by Luis Serrano, Owner at Meadowsweet Heating & Air, serving San Antonio.