Boiler Replacement Cost in Round Rock, Texas
Boiler replacement in Round Rock runs about $9,900 for a typical job. Basic installs start near $5,800. High-efficiency equipment with duct or electrical work can reach $13,200.
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Round Rock Weather and HVAC Load
NOAA's 1991-2020 climate normals put Round Rock at 1,903 heating degree days and 2,746 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. On average, Round Rock gets 27 freezing nights and 114 days above 90°F per year. For a 2,000 sq ft house, this climate points to a heating load somewhere near 35,000 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 | 1,903 |
|---|---|
| Cooling degree days / year | 2,746 |
| Nights at or below 32°F | 27 |
| Days above 90°F | 114 |
| Average low / high | 55.8°F / 78.7°F |
Round Rock Housing Stock
Census figures put the median build year in Round Rock at 2001, so a typical house here has about 25 years on it. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. Round Rock has roughly 26,000 owner-occupied homes, or 56.2% of households. The median home value is $383,700, and median household income is $97,187. We use both figures to adjust labor and pricing for this page.
Between 2020 and 2025, NOAA's Storm Events Database logged 29 hail days and 14 days with damaging thunderstorm winds in Williamson County. The largest hail reported was 4 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. Williamson County also had 3 tornado days in that period.
When Replacement Makes Sense
- Some radiators stay cold
- Leaks, rust, or pressure that keeps dropping
- Fuel bills keep going up
- The boiler is 20 to 30 years old or more
What Moves the Price
- A combi boiler that also makes your hot water
- Pumps, zone valves and the piping around the boiler
- A new chimney liner or venting
- Fuel type: gas, oil or propane
- Condensing or non-condensing boiler
For Round Rock we raised the national figures about 5%, 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
- Startup and safety tests
- Flushing and refilling the system
- Removing the old boiler
- The new boiler and the piping around it
- Venting and fuel hookups
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 Round Rock 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 your gas or oil company about rebates on condensing boilers.
- A combi boiler frees up space and replaces your water heater.
- Ask for a heat-loss calculation. A lot of old boilers are much bigger than the house needs.
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Boiler Replacement Questions from Round Rock Homeowners
How much is boiler replacement in Round Rock?
Plan on $5,800 to $13,200, with most jobs near $9,900. 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 Round Rock?
Between late fall and early spring. With 114 days over 90°F, Round Rock contractors are booked solid all summer, and off-season jobs are easier to schedule and negotiate.
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.
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.
Boiler Replacement Near Round Rock
- Pflugerville $6,000 to $13,600
- Cedar Park $6,500 to $14,800
- Georgetown $5,800 to $13,100
- Leander $6,800 to $15,400
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Austin Great Hills; NOAA Storm Events Database 2020-2025, Williamson County. Prices are our estimates, not contractor quotes. Updated 2026.