HVAC System Replacement Cost in Carrollton, Texas
Our 2026 estimate for full HVAC system replacement in Carrollton, TX is $10,500 to $22,800. That puts Carrollton 23% above the national average, mainly because of higher incomes and home values, which push labor rates up and the larger cooling equipment local summers call for.
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Carrollton Weather and HVAC Load
Carrollton logs 2,294 heating degree days and 2,612 cooling degree days in a normal year, based on the closest NOAA weather station. Neither season dominates in Carrollton. That balance is a big reason heat pumps and dual-fuel systems sell well in Texas. On average, Carrollton gets 35 freezing nights and 93 days above 90°F per year. Snowfall averages about 2 inches. 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 | 2,294 |
|---|---|
| Cooling degree days / year | 2,612 |
| Nights at or below 32°F | 35 |
| Days above 90°F | 93 |
| Average low / high | 55.8°F / 75.8°F |
Carrollton Housing Stock
Census figures put the median build year in Carrollton at 1988, so a typical house here has about 38 years on it. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. Owners live in 58.3% of occupied homes, roughly 30,000 households. The median home value is $353,600, and median household income is $99,115. We use both figures to adjust labor and pricing for this page.
Between 2020 and 2025, NOAA's Storm Events Database logged 53 hail days and 31 days with damaging thunderstorm winds in Denton County. 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
- An old R-22 AC paired with an aging furnace
- Both the heating and cooling equipment are 15 years old or more
- Some rooms are uncomfortable, and the energy bills are high
What Moves the Price
- Efficiency ratings: SEER2, AFUE and HSPF2
- Equipment sized to the house and climate
- Duct repair or replacement
- Permits and electrical work
- Thermostat and zoning upgrades
- Furnace plus AC, or heat pump plus air handler
For Carrollton we raised the national figures about 23%, 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, testing and warranty registration
- A load calculation and system design
- Removing the old equipment
- New, matched heating and cooling equipment
- Duct connections and sealing
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 Carrollton. 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
- Make every bidder quote the same efficiency ratings, or the prices won't compare.
- Ask for a duct leakage test. Leaky ducts can lose 20 to 30% of what the system puts out.
- Replacing both pieces at once usually costs less than two separate jobs a few years apart.
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HVAC System Replacement Questions from Carrollton Homeowners
How much is full HVAC system replacement in Carrollton?
Plan on $10,500 to $22,800, with most jobs near $17,300. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule full HVAC system replacement in Carrollton?
In spring or fall. Those are the slow months between heating and cooling season in Carrollton.
How often should an HVAC system be replaced?
Most systems get replaced every 15 to 20 years. AC units and heat pumps usually wear out before gas furnaces do.
Can I replace only the AC and keep my furnace?
Yes, as long as the indoor coil and blower work with the new AC. A mismatched system loses efficiency and can void the warranty.
HVAC System Replacement Near Carrollton
- Lewisville $10,000 to $21,800
- Plano $11,200 to $24,300
- Irving $9,700 to $21,100
- Grapevine $11,400 to $24,800
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Richardson; NOAA Storm Events Database 2020-2025, Denton County. Prices are our estimates, not contractor quotes. Updated 2026.