Furnace Repair in San Antonio, TX

Furnace Repair in San Antonio, TX

Furnace repair in San Antonio typically costs between $150 and $650 depending on the part that failed, and most repairs can be completed the same day we diagnose the problem. If your furnace is blowing cold air, short cycling, or making a noise you haven’t heard before, the fix is usually a single component like an igniter, flame sensor, or blower motor. At Brandt HVAC Co San Antonio, we show up with a written price before any work starts, so you know exactly what the repair costs before you approve it. Call us at (361) 470-8872 and a live person answers, any hour, any day.

This page covers what we see most often in San Antonio homes, what repairs actually cost here, and how our process works from the first call to the final test. You can also read more about the full range of Heating & Furnace in San Antonio services we provide.

Key Takeaways

• Most furnace repairs in San Antonio run $150 to $650, with igniters and flame sensors on the lower end and blower motors or control boards on the higher end.
• Brandt HVAC gives you a written price before any work begins, on every job, with no exceptions.
• Every repair includes a written guarantee. If it fails within 365 days, we return and fix it at no charge.
• You’ll know your technician’s name and see their photo before they arrive, and they’ll show a photo ID badge at the door.
• Phones are answered by a live person 24 hours a day, 7 days a week, including holidays.

When You Need Furnace Repair

San Antonio winters are short but they arrive fast, and the first cold front usually catches at least one thing off guard. Here are the signs we tell homeowners to watch for:

• The furnace blows cold or lukewarm air. This often points to a failed igniter or a dirty flame sensor. If the burners aren’t lighting, the air never gets warm no matter how long the system runs.
• The system short cycles. It starts, runs for a minute or two, then shuts off before the house reaches temperature. Short cycling is usually a limit switch, a clogged filter, or an airflow restriction, and it strains the whole system if left alone.
• A burning smell that doesn’t fade. On the first cold start of the season, a brief dusty smell is normal. A smell that lingers or smells like gas is not. Turn the system off and call us immediately.
• Rattling, squealing, or banging from the cabinet. A squeal often means a blower motor bearing is worn. A bang on startup can be a delayed ignition. Both are repairable, and both get worse the longer they’re ignored.
• The furnace won’t start at all. No response from the thermostat is sometimes just a tripped breaker or a failed control board. We test the system end to end before recommending any repair, so you don’t pay for a part you don’t need.
• Higher gas bills with no change in usage. A furnace that’s running longer than it should or burning inefficiently will show up on your CPS Energy bill. Tune-ups and small repairs now usually cost less than another month of waste.

Our Furnace Repair Process

We built this process around one idea: you should never wonder who’s at your door or what a repair will cost. Here’s exactly what happens when you call Brandt HVAC Co San Antonio.

1. You call, a person answers. No phone tree, no voicemail. You describe the problem and we schedule a visit at a time that works for you, including nights and weekends.
2. You learn who’s coming before they arrive. We send the technician’s name and photo to you ahead of the appointment. Every Brandt HVAC technician is background-checked and identity-verified under the Threshold Verified standard, and they’ll show a photo ID badge when you answer the door.
3. We diagnose and show you the problem. The technician tests the system, finds the failed part, and explains what’s wrong in plain language. You’ll see the issue, not just hear about it.
4. You get a written price before any work starts. No oral estimates, no surprises, no “while we’re here” add-ons. The price you approve in writing is the price you pay.
5. We make the repair and test it. The technician installs the part, runs the furnace through a full cycle, checks airflow and temperature rise, and confirms the system is safe and running correctly before leaving.
6. You get a written guarantee. Every repair includes a written guarantee with a clear term. If the repair fails within that term, we come back and fix it at no charge under the 365-Day Done Right Promise.

Furnace Repair Pricing in San Antonio

Here’s what furnace repairs typically cost in the San Antonio area, based on the work we do week in and week out. These are real ranges, not bait numbers.

• Flame sensor cleaning or replacement: $95 to $185. This is one of the most common no-heat fixes, especially on Goodman and Rheem furnaces in older San Antonio homes.
• Igniter replacement: $150 to $300, parts and labor included. Hot surface igniters fail with age, and the part itself is inexpensive; most of the cost is diagnosis and installation.
• Blower motor replacement: $400 to $800. The motor itself is the largest cost here, and it varies by brand and horsepower. York and Bryant blowers tend to run on the higher end of that range.
• Control board replacement: $250 to $550. If the furnace won’t respond to the thermostat or keeps tripping, the board is often the culprit.
• Pressure switch replacement: $150 to $275. These switches fail on furnaces with poor venting or condensate drainage, common in Daikin and Lennox models.
• Gas valve replacement: $200 to $450. If the burners light intermittently or not at all, the gas valve may not be opening properly.

What moves the price? The part itself, how accessible the furnace is, and whether the system needs multiple components addressed. An older furnace with a worn igniter and a dirty flame sensor will cost more than a single-part fix, which is why we show you every finding during diagnosis. You approve the full scope before we turn a single tool.

We give free estimates on every repair. Call (361) 470-8872 and we’ll give you a written price for your specific system, not a generic range.

Common Furnace Repair FAQs

How much does furnace repair cost in San Antonio?

Furnace repair in San Antonio typically runs between $150 and $650, with the most common fixes like flame sensor cleaning and igniter replacement costing $95 to $300. Blower motors, control boards, and gas valves sit at the higher end. Every Brandt HVAC repair starts with a written price before work begins, so you’ll know your exact cost before you approve anything.

Can you fix my furnace the same day?

Yes, in most cases we can complete a furnace repair the same day we diagnose it. Our technicians carry the most common replacement parts for major brands including Rheem, York, and Bryant, so we’re not waiting on a parts house run for most no-heat calls. Call (361) 470-8872 and we’ll tell you our soonest available window.

Is it cheaper to repair or replace my furnace?

If your furnace is under 12 years old and the repair is under $650, repairing is almost always the better financial call. If your system is older than 15 years and needs a blower motor or heat exchanger, replacement starts to make more sense. We’ll show you the numbers for both options and let you decide, with no pressure either way.

Do you offer a guarantee on furnace repairs?

Yes. Every furnace repair from Brandt HVAC includes a written guarantee with a clear term. If the repair fails within the guarantee period, we return and fix it at no charge, backed by our 365-Day Done Right Promise. You’ll see the guarantee terms in writing when you approve the repair.

Is it safe to keep using a furnace that’s making noise?

It depends on the noise. A light hum is normal. A bang on startup, a persistent squeal, or any sound paired with a smell is worth turning the system off and calling a professional. Furnace components like heat exchangers and gas valves carry real risk when they fail, so we recommend having any unusual sound checked rather than waiting. Call (361) 470-8872 and we’ll help you figure out if it’s urgent.

What brands do you repair?

We repair all major residential furnace brands, including Rheem, York, Daikin, Bryant, Carrier, Trane, Lennox, and Goodman. Parts availability varies by brand and age, and we’ll tell you upfront if a part needs to be ordered before any money leaves your pocket.

Why San Antonio Homeowners Choose Brandt HVAC

The Brandt name comes from an old word for a firebrand, which fits the work of keeping a home warm. That’s the job. But the reason San Antonio homeowners call us has as much to do with how we show up as what we fix.

Every Brandt HVAC technician is background-checked and identity-verified through the Threshold Verified standard before they ever knock on your door. You get their name and photo before the visit. They show a badge at the door. If someone shows up you weren’t told to expect, that visit is on us and we make it right.

We’ve operated as part of the Threshold Group family of home-service companies since 2003, and this San Antonio location is independently owned and operated. That structure gives us the backing of a larger organization and the accountability of a local team that lives in the community it serves.

We don’t do phone trees. We don’t do surprise charges. We don’t do repairs without a written price and a written guarantee. That’s the whole model.

Neighborhoods We Serve in San Antonio

Our technicians work across the city and surrounding areas, including Alamo Heights, Stone Oak, Helotes, Leon Valley, Castle Hills, Terrell Hills, Shavano Park, Universal City, Converse, Schertz, Cibolo, and the far west side near SeaWorld. If you’re anywhere in Bexar County and your furnace won’t start, call us at (361) 470-8872 and we’ll get you on the schedule.

Call Brandt HVAC Co San Antonio for Furnace Repair

When your furnace quits on a cold night, you want two things: a real person on the phone and a technician you can trust at the door. You’ll get both. Call (361) 470-8872 for a free estimate on furnace repair in San Antonio. We answer live, 24 hours a day, 7 days a week, and we’ll tell you exactly who’s coming and what it will cost before work begins.

Written by Devin Marlowe, Owner at Brandt HVAC Co San Antonio, serving San Antonio.