Furnace Replacement Cost in Conroe, Texas
Our 2026 estimate for furnace replacement in Conroe, TX is $2,900 to $7,100. That puts Conroe 9% below the national average.
Conroe Weather and HVAC Load
NOAA's 1991-2020 climate normals put Conroe at 1,440 heating degree days and 3,172 cooling degree days per year. Cooling carries most of the load. Heating equipment gets light use, so a furnace here often outlasts the AC it's paired with. Count on roughly 16 nights below 32°F and 105 afternoons past 90°F in a typical year.
| Heating degree days / year | 1,440 |
|---|---|
| Cooling degree days / year | 3,172 |
| Nights at or below 32°F | 16 |
| Days above 90°F | 105 |
| Average low / high | 59.3°F / 80°F |
Conroe Housing Stock
The median Conroe home dates to 2004, according to the Census ACS. That makes the typical house about 22 years old. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. About 21,000 households here own their home, 55.2% of the occupied total. The median home value is $283,100, and median household income is $75,245. We use both figures to adjust labor and pricing for this page.
Between 2020 and 2025, NOAA's Storm Events Database logged 10 hail days and 24 days with damaging thunderstorm winds in Montgomery County. The largest hail reported was 1.75 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage. Montgomery County also had 4 tornado days in that period.
When Replacement Makes Sense
- A tech found a cracked heat exchanger, or the CO detector has gone off
- Gas or electric bills keep climbing even though usage hasn't changed
- A repair quote runs past a third of the cost of a new unit
- Some rooms stay cold, the burner short-cycles, or the ignitor keeps failing
What Moves the Price
- New PVC venting if you move to a condensing model
- BTU size, which should come from a Manual J load calculation
- Condition of the existing ductwork and any changes it needs
- Single-stage, two-stage or modulating gas valve
- AFUE rating: a basic 80% unit vs. a 96% condensing furnace
- Permit and inspection fees, which the local building department sets
For Conroe we lowered the national figures about 9%, based on local income, home values and climate-based equipment sizing. Get at least three written quotes; real bids can land outside this range.
What the Quote Should Cover
- The new furnace, filter rack and thermostat wiring
- Combustion and safety tests
- The permit and the manufacturer warranty registration
- Gas line and vent connections
- Removing and hauling away the old furnace
Texas Permits, Efficiency Rules and Rebates
Texas is in the DOE's Southeast region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up). Equipment replacements in Conroe generally need a mechanical permit, and a reputable contractor will pull it for you. Ask for their Texas license or registration number and a certificate of insurance with the quote. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.
Before You Hire
- Ask for the Manual J load calculation in writing. Oversized furnaces are the most common mistake we see.
- Make sure all three quotes are for the same AFUE and staging, or you can't compare them.
- Replace it in early fall if you can. A no-heat emergency in January costs more and leaves you fewer choices.
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Furnace Replacement Questions from Conroe Homeowners
How much is furnace replacement in Conroe?
Plan on $2,900 to $7,100, with most jobs near $5,200. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule furnace replacement in Conroe?
Between late fall and early spring. With 105 days over 90°F, Conroe contractors are booked solid all summer, and off-season jobs are easier to schedule and negotiate.
How long does a furnace replacement take?
A straight swap is usually done in one day, somewhere between 4 and 10 hours. Moving to a condensing furnace with new PVC venting can add a few more.
Is a high-efficiency furnace worth it?
In cold climates, a 95%+ AFUE furnace usually earns back the price difference in lower gas bills. Where winters are mild, the payback can take a very long time.
Furnace Replacement Near Conroe
- The Woodlands $3,900 to $9,400
- Spring $2,900 to $7,100
- New Braunfels $3,200 to $7,700
- Allen $3,900 to $9,500
- Beaumont $2,600 to $6,200
- Richardson $3,500 to $8,500
- Tyler $2,800 to $6,900
- League City $3,400 to $8,300
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Conroe; NOAA Storm Events Database 2020-2025, Montgomery County. Prices are our estimates, not contractor quotes. Updated 2026.