Furnace Replacement Cost in Waco, Texas
Our 2026 estimate for furnace replacement in Waco, TX is $2,700 to $6,500. That puts Waco 17% below the national average, mainly because of lower local labor costs.
Waco Weather and HVAC Load
Waco logs 2,125 heating degree days and 2,725 cooling degree days in a normal year, based on the closest NOAA weather station. Neither season dominates in Waco. That balance is a big reason heat pumps and dual-fuel systems sell well in Texas. On average, Waco gets 38 freezing nights and 108 days above 90°F per year. For a 2,000 sq ft house, this climate points to a heating load somewhere near 40,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.
| Heating degree days / year | 2,125 |
|---|---|
| Cooling degree days / year | 2,725 |
| Nights at or below 32°F | 38 |
| Days above 90°F | 108 |
| Average low / high | 56°F / 77.1°F |
Waco Housing Stock
Half the homes in Waco were built before 1977 (Census ACS median), so the typical house is about 49 years old. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. Waco has roughly 26,000 owner-occupied homes, or 48.9% of households. Homes here have a median value of $199,600 and households a median income of $51,468. Those two numbers drive the labor adjustment in our estimate.
McLennan County had 27 hail days and 22 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 4.5 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. McLennan County also had 5 tornado days in that period.
When Replacement Makes Sense
- Gas or electric bills keep climbing even though usage hasn't changed
- Some rooms stay cold, the burner short-cycles, or the ignitor keeps failing
- The furnace is 15 to 20 years old or more
- A repair quote runs past a third of the cost of a new unit
What Moves the Price
- AFUE rating: a basic 80% unit vs. a 96% condensing furnace
- Single-stage, two-stage or modulating gas valve
- BTU size, which should come from a Manual J load calculation
- New PVC venting if you move to a condensing model
- Condition of the existing ductwork and any changes it needs
- Permit and inspection fees, which the local building department sets
We lowered the national figures about 17% for Waco using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.
What the Quote Should Cover
- Removing and hauling away the old furnace
- The new furnace, filter rack and thermostat wiring
- Gas line and vent connections
- The permit and the manufacturer warranty registration
- Combustion and safety tests
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). Expect the contractor to pull a mechanical permit for a replacement job in Waco. If a bidder suggests skipping it, move on. Also ask for a Texas license or registration number and proof of insurance. 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
- Replace it in early fall if you can. A no-heat emergency in January costs more and leaves you fewer choices.
- Look up utility rebates on 95%+ AFUE units before you buy.
- Make sure all three quotes are for the same AFUE and staging, or you can't compare them.
Get Free Furnace Replacement Quotes in Waco
Tell us where you are and up to three licensed local pros will get in touch. You don't have to hire any of them.
Furnace Replacement Questions from Waco Homeowners
How much is furnace replacement in Waco?
Plan on $2,700 to $6,500, with most jobs near $4,800. 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 Waco?
In spring or fall. Those are the slow months between heating and cooling season in Waco.
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 Waco
- McAllen $2,500 to $6,100
- Midland $3,300 to $8,000
- Pasadena $2,600 to $6,400
- Lewisville $3,300 to $8,000
- Mesquite $2,900 to $7,200
- Carrollton $3,400 to $8,300
- Killeen $2,700 to $6,600
- Round Rock $3,400 to $8,200
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Waco Dam; NOAA Storm Events Database 2020-2025, McLennan County. Prices are our estimates, not contractor quotes. Updated 2026.