AC Installation Cost in Houston, Texas
Our 2026 estimate for new AC installation in Houston, TX is $4,600 to $10,500. That puts Houston 10% above the national average, mainly because of lower local labor costs and the larger cooling equipment local summers call for.
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Houston Weather and HVAC Load
In a normal year, Houston racks up 1,222 heating and 3,279 cooling degree days (NOAA 1991-2020 normals). Cooling carries most of the load, which is why compressors and condenser fan motors wear out faster here than in northern cities. Count on roughly 5 nights below 32°F and 109 afternoons past 90°F in a typical year. On the cooling side, a 2,000 sq ft house here usually needs around 4 tons. A tight, well-insulated house may get by with half a ton less.
| Heating degree days / year | 1,222 |
|---|---|
| Cooling degree days / year | 3,279 |
| Nights at or below 32°F | 5 |
| Days above 90°F | 109 |
| Average low / high | 61.5°F / 79.6°F |
Houston Housing Stock
Half the homes in Houston were built before 1981 (Census ACS median), so the typical house is about 45 years old. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. About 385,000 households here own their home, 42% of the occupied total. The median home value is $253,400, and median household income is $62,894. We use both figures to adjust labor and pricing for this page.
Between 2020 and 2025, NOAA's Storm Events Database logged 28 hail days and 44 days with damaging thunderstorm winds in Harris County. The largest hail reported was 2 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. Harris County also had 9 tornado days in that period.
When It Makes Sense
- The AC is 12 to 15 years old or more
- It still runs on R-22 refrigerant
- Summer electric bills keep going up
- It has had more than one refrigerant leak
What Moves the Price
- Whether the coil and line set also need replacing
- Electrical work such as a new disconnect, breaker or wiring
- SEER2 rating and whether the compressor is single-stage or variable-speed
- The pad, permit and refrigerant (R-410A or the newer R-454B)
- Tonnage, based on house size and local climate
For Houston we raised the national figures about 10%, 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
- The new condenser, coil and, if needed, line set
- Startup, an airflow check and warranty registration
- Refrigerant charge and a leak test
- The electrical disconnect and wiring
- Removing the old condenser and coil
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 Houston; 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 Manual J calculation. "Same size as the old one" isn't sizing.
- Fall and early spring installs often come with better pricing and shorter waits.
- Buy the condenser and coil as a matched set, or you may void the manufacturer warranty.
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AC Installation Questions from Houston Homeowners
How much is new AC installation in Houston?
Plan on $4,600 to $10,500, with most jobs near $7,800. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule new AC installation in Houston?
Between late fall and early spring. With 109 days over 90°F, Houston contractors are booked solid all summer, and off-season jobs are easier to schedule and negotiate.
How long does a new AC last?
With yearly maintenance, 12 to 17 years. Salt air and extreme heat shorten that.
What size AC do I need?
It depends on square footage, insulation, windows and climate. The rough rule is a ton for every 450 to 650 sq ft, but only a Manual J calculation gives you a real number.
AC Installation Near Houston
- San Antonio $4,400 to $10,000
- Dallas $4,800 to $10,800
- Fort Worth $4,800 to $10,800
- Austin $5,700 to $13,000
- El Paso $4,100 to $9,300
- Arlington $4,700 to $10,600
- Corpus Christi $4,600 to $10,400
- Plano $5,500 to $12,500
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Houston-Port; NOAA Storm Events Database 2020-2025, Harris County. Prices are our estimates, not contractor quotes. Updated 2026.