HVAC System Replacement Cost in Denton, Texas
Expect to pay $9,600 to $20,800 for full HVAC system replacement in Denton, TX. Most homeowners end up near $15,800, depending on the equipment tier and how much of the old setup can be reused.
Denton Weather and HVAC Load
Denton logs 2,477 heating degree days and 2,646 cooling degree days in a normal year, based on the closest NOAA weather station. Neither season dominates in Denton. That balance is a big reason heat pumps and dual-fuel systems sell well in Texas. A normal year brings 38 nights at or below freezing and 95 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 | 2,477 |
|---|---|
| Cooling degree days / year | 2,646 |
| Nights at or below 32°F | 38 |
| Days above 90°F | 95 |
| Average low / high | 54.5°F / 76.2°F |
Denton Housing Stock
Census figures put the median build year in Denton at 1995, so a typical house here has about 31 years on it. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. Denton has roughly 27,000 owner-occupied homes, or 49.2% of households. Homes here have a median value of $325,700 and households a median income of $73,719. Those two numbers drive the labor adjustment in our estimate.
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
- Both the heating and cooling equipment are 15 years old or more
- Some rooms are uncomfortable, and the energy bills are high
- Both units keep needing repairs
What Moves the Price
- Efficiency ratings: SEER2, AFUE and HSPF2
- Furnace plus AC, or heat pump plus air handler
- Equipment sized to the house and climate
- Permits and electrical work
- Duct repair or replacement
- Thermostat and zoning upgrades
For Denton we raised the national figures about 12%, 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
- New, matched heating and cooling equipment
- A load calculation and system design
- Removing the old equipment
- Startup, testing and warranty registration
- 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 Denton. 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
- Ask for a duct leakage test. Leaky ducts can lose 20 to 30% of what the system puts out.
- Get one quote for a heat pump system and one for a furnace plus AC.
- Make every bidder quote the same efficiency ratings, or the prices won't compare.
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HVAC System Replacement Questions from Denton Homeowners
How much is full HVAC system replacement in Denton?
Plan on $9,600 to $20,800, with most jobs near $15,800. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule full HVAC system replacement in Denton?
In spring or fall. Those are the slow months between heating and cooling season in Denton.
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 Denton
- Brownsville $8,700 to $19,000
- Killeen $8,500 to $18,500
- Amarillo $8,200 to $17,800
- Mesquite $9,100 to $19,700
- Grand Prairie $9,400 to $20,500
- Pasadena $9,200 to $20,000
- McKinney $11,300 to $24,700
- McAllen $9,200 to $20,000
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Denton; NOAA Storm Events Database 2020-2025, Denton County. Prices are our estimates, not contractor quotes. Updated 2026.