HVAC System Replacement Cost in Celina, Texas
Full HVAC system replacement in Celina runs about $20,800 for a typical job. Basic installs start near $12,600. High-efficiency equipment with duct or electrical work can reach $27,500.
Celina Weather and HVAC Load
NOAA's 1991-2020 climate normals put Celina at 2,576 heating degree days and 2,534 cooling degree days per year. Neither season dominates in Celina. That balance is a big reason heat pumps and dual-fuel systems sell well in Texas. On average, Celina gets 45 freezing nights and 93 days above 90°F per year. Snowfall averages about 3 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 | 2,576 |
|---|---|
| Cooling degree days / year | 2,534 |
| Nights at or below 32°F | 45 |
| Days above 90°F | 93 |
| Average low / high | 53.4°F / 76.2°F |
Celina Housing Stock
Half the homes in Celina were built before 2012 (Census ACS median), so the typical house is about 14 years old. Newer homes are built tighter, so oversized equipment is a common problem. It short-cycles, wastes energy and leaves rooms clammy. Celina has roughly 7,800 owner-occupied homes, or 93.2% of households. Homes here have a median value of $458,000 and households a median income of $155,875. Those two numbers drive the labor adjustment in our estimate.
Collin County had 39 hail days and 27 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 3 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. Collin County also had 6 tornado days in that period.
When Replacement Makes Sense
- Some rooms are uncomfortable, and the energy bills are high
- An old R-22 AC paired with an aging furnace
- Both the heating and cooling equipment are 15 years old or more
What Moves the Price
- Equipment sized to the house and climate
- Thermostat and zoning upgrades
- Duct repair or replacement
- Permits and electrical work
- Furnace plus AC, or heat pump plus air handler
- Efficiency ratings: SEER2, AFUE and HSPF2
For Celina we raised the national figures about 49%, 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
- Duct connections and sealing
- New, matched heating and cooling equipment
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 Celina. 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
- Replacing both pieces at once usually costs less than two separate jobs a few years apart.
- Get one quote for a heat pump system and one for a furnace plus AC.
- Ask for a duct leakage test. Leaky ducts can lose 20 to 30% of what the system puts out.
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HVAC System Replacement Questions from Celina Homeowners
How much is full HVAC system replacement in Celina?
Plan on $12,600 to $27,500, with most jobs near $20,800. 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 Celina?
In spring or fall. Those are the slow months between heating and cooling season in Celina.
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 Celina
- McKinney $11,300 to $24,700
- Little Elm $11,200 to $24,400
- Galveston $9,600 to $20,900
- Grapevine $11,400 to $24,800
- Rockwall $10,800 to $23,500
- Sherman $8,300 to $18,200
- Fulshear $13,800 to $30,100
- Port Arthur $8,300 to $18,000
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Pilot Point Isl Du Boi; NOAA Storm Events Database 2020-2025, Collin County. Prices are our estimates, not contractor quotes. Updated 2026.