Boiler Replacement Cost in Lewisville, Texas
Boiler replacement in Lewisville runs about $9,700 for a typical job. Basic installs start near $5,700. High-efficiency equipment with duct or electrical work can reach $12,900.
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Lewisville Weather and HVAC Load
NOAA's 1991-2020 climate normals put Lewisville at 2,437 heating degree days and 2,625 cooling degree days per year. Neither season dominates in Lewisville. That balance is a big reason heat pumps and dual-fuel systems sell well in Texas. A normal year brings 44 nights at or below freezing and 104 days over 90°F. 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 | 2,437 |
|---|---|
| Cooling degree days / year | 2,625 |
| Nights at or below 32°F | 44 |
| Days above 90°F | 104 |
| Average low / high | 54.7°F / 76.2°F |
Lewisville Housing Stock
Census figures put the median build year in Lewisville at 1996, so a typical house here has about 30 years on it. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. About 23,000 households here own their home, 46.6% of the occupied total. The median home value is $350,200, and median household income is $85,002. We use both figures to adjust labor and pricing for this page.
Denton County had 53 hail days and 31 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 5.9 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. Denton County also had 4 tornado days in that period.
When Replacement Makes Sense
- The boiler is 20 to 30 years old or more
- Leaks, rust, or pressure that keeps dropping
- Fuel bills keep going up
- Some radiators stay cold
What Moves the Price
- A new chimney liner or venting
- A combi boiler that also makes your hot water
- Fuel type: gas, oil or propane
- Pumps, zone valves and the piping around the boiler
- Condensing or non-condensing boiler
We raised the national figures about 3% for Lewisville 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
- Flushing and refilling the system
- Removing the old boiler
- Venting and fuel hookups
- The new boiler and the piping around it
- Startup 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). Plan on a mechanical permit for most replacements in Lewisville; the contractor normally pulls it. Before you sign, ask each bidder for their 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
- Ask for a heat-loss calculation. A lot of old boilers are much bigger than the house needs.
- A combi boiler frees up space and replaces your water heater.
- For a steam system, hire a contractor who works on steam regularly.
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Boiler Replacement Questions from Lewisville Homeowners
How much is boiler replacement in Lewisville?
Plan on $5,700 to $12,900, with most jobs near $9,700. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule boiler replacement in Lewisville?
In spring or fall. Those are the slow months between heating and cooling season in Lewisville.
How long does a boiler last?
A cast-iron boiler can last 25 to 35 years. A modern condensing boiler usually lasts 15 to 20 with yearly service.
Can I replace a boiler with a heat pump?
Yes, with an air-to-water heat pump or a ductless system. The radiators may need upgrading, because heat pumps run cooler water than boilers.
Boiler Replacement Near Lewisville
- Carrollton $5,900 to $13,400
- Flower Mound $7,400 to $16,800
- Midland $5,600 to $12,700
- Waco $4,600 to $10,400
- Round Rock $5,800 to $13,200
- McAllen $4,300 to $9,800
- Abilene $4,800 to $10,800
- Pasadena $4,500 to $10,300
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Grapevine Dam; NOAA Storm Events Database 2020-2025, Denton County. Prices are our estimates, not contractor quotes. Updated 2026.