Furnace & heating
AC repair
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal 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.
Get your free estimateStyles & brands we work with
See the difference
Before
After
Before
After
Before
AfterHow Much Does Furnace Replacement Cost in Austin?
A full furnace replacement in Austin, TX typically costs between $4,200 and $8,900 for a standard single-family home in 2026, with most homeowners in neighborhoods like Allandale, Mueller, and Circle C landing around $5,500 to $6,800 for a mid-efficiency gas furnace with installation. That price includes the unit itself, labor, permits, removal of the old furnace, and a start-up test. High-efficiency models (90%+ AFUE) run higher, often $7,000 to $11,000, especially in older Austin homes that need ductwork modifications or new venting.
Furnace Replacement Cost Breakdown (2026)
Here is what we actually see on replacement jobs across Austin, from Crestview to Tarrytown to Round Rock and beyond. These are line-item ranges for the Austin market as of 2026, not national averages pulled from a database.
| Line Item | Typical Austin Range | Notes |
|---|---|---|
| Furnace unit only (80% AFUE, single-stage) | $1,700 – $2,900 | Goodman, Rheem, Bryant, Carrier base models |
| Furnace unit only (96% AFUE, two-stage) | $2,900 – $4,800 | Trane, Lennox, American Standard, Daikin |
| Labor (standard swap, no ductwork) | $1,200 – $2,100 | Usually one full day, two technicians |
| Permit and inspection | $150 – $350 | City of Austin mechanical permit |
| Old furnace removal and disposal | $100 – $250 | Haul-away included with most quotes |
| Ductwork sealing or minor modification | $300 – $1,200 | Common in pre-1990 Austin homes |
| New thermostat | $80 – $300 | Smart thermostats on the higher end |
| Chimney liner or venting changes | $400 – $1,500 | High-efficiency conversions often need this |
| Whole-home air filtration add-on | $250 – $900 | Optional, helps with Austin cedar season |
So a straightforward 80% AFUE furnace swap in a 1,500-square-foot Austin ranch from the 1970s might land around $4,200 to $5,000. Move to a 96% AFUE two-stage unit in a larger home, add a new chimney liner, and you’re looking at $8,000 to $11,000 without much trouble. The single biggest swing factor is whether your existing venting and ductwork can stay as-is.
What These Numbers Include
Every replacement quote from Cold Harbour Heating and Air Austin includes the furnace, labor, permit pulling, removal and disposal of the old unit, a start-up and safety test, and a written price handed to you before any work starts. That is not a bonus add-on. It is how we have operated since 2003 as part of the home service standards of the Kingswell network.
What Affects Furnace Replacement Pricing in Austin
No two Austin homes price out the same way. Here are the factors that move the number the most, based on what we see across this market every week.
- Furnace efficiency (AFUE). An 80% AFUE unit costs less up front. A 95% or 96% AFUE unit costs more but cuts monthly gas bills, which matters during the January and February cold snaps in Central Texas. In a city where winter heating demand is short but intense, the payoff window on high-efficiency units runs longer than in northern climates.
- Your home’s age and ductwork condition. Austin has thousands of homes built before 1990 in neighborhoods like Hyde Park, Brentwood, and Windsor Park. Many still have original galvanized ductwork. If your ducts leak 25% of the heated air into the attic before it reaches a room, adding a high-efficiency furnace without addressing the ducts wastes money. Duct sealing adds cost but makes the new furnace actually perform.
- Furnace location and access. Attic installs, common in Austin’s slab-foundation homes, take longer and cost more in labor than closet or garage installs. Attic access through a small hallway hatch in a 1970s North Austin home slows the crew down. Cramped mechanical closets in newer Mueller homes create the same issue.
- Venting and gas line changes. Switching from an 80% to a 96% AFUE furnace usually means replacing metal flue pipe with PVC venting routed through a side wall. Sometimes the gas line needs upsizing. Both add real cost, and both are code-required, not optional.
- Brand and warranty terms. Carrier, Trane, and Lennox carry a premium over Goodman and Rheem, though all nine major brands we service, including York, Daikin, Bryant, and American Standard, make dependable equipment. What you are often paying for with the premium names is a longer parts warranty and a denser local supply chain for future repairs.
- Permit requirements. The City of Austin requires a mechanical permit for furnace replacement. Permit fees are modest, but the inspection process adds a day or two of scheduling. In some nearby cities like Pflugerville or Cedar Park, the process and fees differ slightly.
How to Save on Furnace Replacement
Replacing a furnace is a big purchase, but there are legitimate ways to keep the cost down without cutting corners on safety or code compliance.
- Replace in the off-season. Austin’s demand for furnace work spikes in December and January. If your existing unit still limps along in October, replacing it then often means better scheduling flexibility and occasionally manufacturer rebates that expire by spring.
- Match the furnace to your actual home, not the biggest option. A 100,000 BTU furnace in a 1,800-square-foot, well-insulated Austin home is oversized and wastes gas. An honest load calculation (Manual J) tells you what you actually need. We perform this on every replacement quote.
- Keep the same efficiency tier if venting is already set up for it. If you have an 80% furnace with a metal flue that is in good shape, staying at 80% avoids the $400 to $1,500 venting conversion. If the flue has deteriorated, the math may flip toward going high-efficiency.
- Ask about manufacturer rebates. Most brands run seasonal rebate programs. Your installer should be able to check what is active. We will not promise a rebate we cannot verify, but we will tell you what is available when we quote.
- Get the written price before you decide. You should never approve a replacement without a fixed, itemized price in writing. Call (361) 204-1605 and we will send a technician to measure, inspect, and hand you a written quote. The price you see is the price you pay. No door-knock adjustment.
Furnace Replacement vs. Furnace Repair: Which Makes Sense for Your Austin Home?
Repair prices in Austin run $150 to $700 for most jobs, while a replacement averages $4,200 to $8,900. The decision usually comes down to three things: the age of the furnace, the cost of the repair relative to the age of the unit, and whether the heat exchanger has failed.
Furnaces in Central Texas tend to last 15 to 20 years, shorter than in northern states, because they sit idle for nine months of the year and then fire hard through a cold snap. Rust in the heat exchanger from humidity and disuse is the number one reason older Austin furnaces get condemned. A cracked heat exchanger is a carbon monoxide risk and should not be repaired. We will show you the crack, explain what it means, and give you a written replacement price before any work proceeds.
For a furnace under 10 years old with a $300 repair, fix it. For a 17-year-old furnace with a $600 repair, replacement starts to make more sense, especially if the unit is a discontinued model with parts that are getting hard to source. Our Furnace Replacement in Austin page walks through this decision in more detail.
Signs You Are Getting Close to a Furnace Replacement
You usually get warnings before a furnace quits. Here is what Austin homeowners tell us they noticed in the weeks before calling for a replacement quote.
- Rising gas bills with no change in usage. Austin Energy and Texas Gas Service bills climb even as the thermostat stays at 68. That is usually a furnace losing efficiency as components age.
- Yellow or flickering burner flame. A healthy gas furnace burns blue. Yellow flame means incomplete combustion and possible carbon monoxide production. If you see this, shut the furnace down and call us.
- Rooms that will not warm up. In two-story Austin homes, the upstairs never gets warm while the downstairs runs constantly. Sometimes this is a duct issue; sometimes the furnace is simply too far gone.
- Loud bangs, pops, or rattling on start-up. Delayed ignition or a failing blower motor announces itself with noise. These are fixable, but they are also signals that the system is aging.
- Repairs stacking up. Two repairs in twelve months, or any repair over $500 on a furnace past age 15. At some point you are funding a replacement one repair at a time.
Step-by-Step: How a Furnace Replacement Works with Cold Harbour Heating and Air Austin
Here is exactly what happens when you call us for a furnace replacement in Austin, from first call to final inspection.
- Call (361) 204-1605. A live person answers, 24 hours a day, 7 days a week. No voicemail tree, no after-hours answering service. You tell us what is going on and we schedule a visit.
- Technician arrives in the window we gave you. Uniformed, background-checked, and on time. We take measurements, inspect the existing furnace, ducts, venting, and gas line, and run a load calculation based on your home’s actual square footage, insulation, and window exposure.
- You receive a written, itemized price. Before any tools come out and before you make any decision, you get the full replacement price on paper. That price does not change at the door. It includes the unit, labor, permit, removal, and start-up test.
- You approve the work, we pull the permit. We handle the City of Austin mechanical permit. There is no “you handle the paperwork” step.
- Installation day. Two technicians arrive, lay down floor protection, remove the old furnace, install the new one, make all gas and electrical connections, and test everything. We leave the job site cleaner than we found it. That is one of the five written standards of the Kingswell Way: say the price before the work, show up in the window given, leave the place cleaner than found, put the guarantee in writing, and come back if it fails.
- Final walk-through and written guarantee. We walk you through the new system, hand you the manufacturer warranty paperwork, and issue our 365-Day Done Right Promise in writing. If anything fails within 365 days, we come back and correct it at no charge. No argument, no fine print.
- City inspection passes. The inspector verifies the install meets code. We are on site for the inspection and correct anything the city flags at no cost to you.
Why Austin Homeowners Choose Cold Harbour Heating and Air
Victor Mancini founded Cold Harbour Heating and Air in 2003 with a simple idea: an HVAC company should put its promises in writing. Not in a brochure, not in a sales pitch, but on paper handed to the homeowner before the job starts and again before the technician leaves. That is the Kingswell Way, and it is the reason hundreds of Austin homeowners call us first when their furnace quits at 11 p.m. on a January night.
The name Cold Harbour came from the old roadside shelters where travelers waited out bad weather. A place to get warm and dry before heading back out. That is the job: comfort in any season, delivered without drama, with a price quoted up front and a guarantee that means something.
Our technicians are trained to service all nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. That means the technician who shows up can work on whatever system is already in your home, whether it is a 2010 Lennox in a Round Rock tract house or a 2022 Carrier in a custom Westlake build.
Every replacement includes the 365-Day Done Right Promise. It is written on the invoice before we leave. If the repair or installation fails within a year, we return and make it right at no additional charge. Not a verbal promise. Not a “we’ll take a look.” A written, non-negotiable guarantee. That is the whole point of Victor starting this company.
FAQs – Furnace Replacement Cost in Austin
How much does a furnace replacement cost in Austin in 2026?
Most Austin furnace replacements run between $4,200 and $8,900 for a standard single-family home, with high-efficiency units reaching $7,000 to $11,000 depending on ductwork and venting changes. The average mid-efficiency replacement for a 1,500 to 2,500-square-foot home lands around $5,500 to $6,800. For an exact quote on your home, call (361) 204-1605 and we will hand you a written price before any work starts.
Is it cheaper to repair or replace a furnace in Austin?
Most furnace repairs in Austin cost $150 to $700, while replacements run $4,200 and up. As a rule of thumb, if the repair is under $500 and the furnace is under 12 years old, repair usually wins. If the furnace is over 15 years old or the heat exchanger has failed, replacement is the better long-term call. We will give you an honest recommendation either way, and the repair quote is free.
How long does a furnace replacement take?
A standard furnace swap in Austin takes one full day, usually about 6 to 8 hours for a two-person crew. Attic installations, duct modifications, or venting conversions can extend the job to a day and a half. We quote a firm arrival window and stick to it, and the written price does not change if the job runs long.
Do I need a permit for furnace replacement in Austin?
Yes. The City of Austin requires a mechanical permit for furnace replacement, and the permit fee typically runs $150 to $350. Cold Harbour Heating and Air pulls the permit, schedules the inspection, and is on site for it. You never touch city paperwork.
What size furnace does my Austin home need?
Furnace size depends on square footage, insulation, window area, and ceiling height. A 1,500-square-foot Austin home typically needs a 60,000 to 80,000 BTU unit, while a 3,000-square-foot home may need 80,000 to 100,000 BTU. Oversized furnaces waste gas and short-cycle. We run a Manual J load calculation on every quote to get the sizing right.
Can you replace my furnace the same day?
In many cases, yes. If we have the right unit in stock at our Austin supply house and the permit can be pulled same-day, we can often install the day after your quote. During peak cold snaps in January, scheduling may run a day or two longer. Call (361) 204-1605 and we will tell you exactly when we can be there.
What brands do you install?
We install and service all nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. That means we can match your existing system or recommend the best value for your home without pushing a single brand.
Do you offer financing for furnace replacement?
Financing options are available on approved credit, and we will walk you through what applies to your specific quote. The written price you receive includes all costs up front, with no surprise charges added at installation. Call (361) 204-1605 for details on current financing terms.
Ready for a Written Furnace Replacement Quote in Austin?
You should know exactly what a furnace replacement costs before you commit. No ranges that shift at the door, no vague “we’ll see when we get in there” pricing. Call (361) 204-1605 today and we will send a uniformed, background-checked technician to your Austin home, measure everything, and hand you a written, itemized price. The quote is free, and it comes with everything included: unit, labor, permit, removal, start-up test, and our 365-Day Done Right Promise in writing.
Pricing reflects the Austin market as of 2026. Cold Harbour Heating and Air Austin offers free estimates – call (361) 204-1605.
Written by Victor Mancini, Owner at Cold Harbour Heating and Air Austin, serving Austin since 2003.
What Our Customers Say
"Furnace was short cycling all winter. They diagnosed a bad sensor instead of condemning the whole unit like I feared. Cheap fix, honest call."
- Russ Tiedemann"Yearly tune up and they caught a cracked part I'd never have known about. Showed me the reading, replaced it, and wrote up the warranty. No upsell games."
- Dominic Rourke"New AC and furnace. They gave me a written quote with a couple of options and no pressure. Showed up on the day they promised and the new system is so much quieter."
- Gloria Dunn