HVAC Companies in Texas

Texas runs its air conditioning longer and harder than almost anywhere else in the country. From the Gulf-coast humidity of Houston and Beaumont to the triple-digit summers of Dallas–Fort Worth, Austin, San Antonio and El Paso, a cooling system here is a nine-month workhorse, not a seasonal convenience. That is why choosing the right HVAC contractor in Texas matters: the difference between a right-sized, properly commissioned system and a rushed change-out shows up every month on a summer electric bill. This directory lists licensed heating and air conditioning companies operating across Texas, from large mechanical firms handling commercial rooftop units to residential specialists in fast-growing suburbs like Manor, Round Rock, Katy and New Braunfels.

Licensing: what a legitimate Texas HVAC contractor must hold

Air conditioning and refrigeration work in Texas is regulated by the Texas Department of Licensing and Regulation (TDLR). Any company contracting HVAC work must hold an Air Conditioning and Refrigeration Contractor License, and the work must be performed under a licensed contractor who carries the required commercial general liability insurance on file with TDLR. Texas issues the license in two endorsements: Class A, which has no limit on the size of equipment worked on, and Class B, limited to systems of 25 tons of cooling and 1.5 million BTU/hr of heating or less — typical residential and light-commercial work. Contractors also choose an environment endorsement: Environmental Air Conditioning (comfort cooling and heating), Commercial Refrigeration & Process Cooling, or both. When you evaluate a company in this directory, ask for its TDLR license number and confirm the class and endorsement match the job. Technicians in Texas generally register with TDLR and work under a licensed contractor rather than holding an independent contractor license.

Climate and equipment: why sizing beats horsepower in Texas

Texas spans several climate zones, and that changes what a good installation looks like. Along the Gulf coast, latent load — the humidity a system has to remove — is as important as raw cooling capacity, so oversized equipment that short-cycles actually leaves homes cool but clammy. In the arid west around El Paso, dry-bulb temperatures are punishing but humidity is low, which is why evaporative (“swamp”) cooling still appears there when it is impractical almost everywhere else in the state. A reputable contractor performs a Manual J load calculation rather than simply matching the tonnage of the old unit; correct sizing is the single biggest driver of comfort, humidity control and operating cost in the Texas climate.

Efficiency standards also have a Texas-specific wrinkle. Under the U.S. Department of Energy regional standards that took effect in 2023, Texas falls in the South region, which carries higher minimum efficiency requirements than the northern states: split-system central air conditioners must meet at least 14.3 SEER2 (equivalent to the older 15 SEER metric). Contractors selling or installing new equipment in Texas must meet that floor, and many homeowners step up to higher-SEER2 variable-speed systems to blunt summer demand charges. Ask any company you shortlist how they document SEER2 ratings and whether they register equipment for the manufacturer warranty, which in Texas heat is not a formality.

Heating is not optional here anymore

It is tempting to treat Texas as a cooling-only market, but Winter Storm Uri in February 2021 changed how many owners think about resilience. Heat pumps have become popular across the milder central and coastal parts of the state because they deliver efficient cooling and adequate heating from one system, while gas furnaces remain common in North Texas where hard freezes are more frequent. A good Texas HVAC contractor will talk through both the summer and the occasional deep-freeze scenario rather than defaulting to a cooling-only conversation.

Permits and inspections vary by city

Texas has no single statewide mechanical permit process; permitting is handled locally. Houston, Dallas, Austin, San Antonio, Fort Worth and El Paso each run their own permit and inspection systems, and equipment change-outs or new installations generally require a mechanical permit and a passing inspection. In unincorporated county areas the requirements can be lighter, but the licensed-contractor requirement from TDLR still applies. When comparing quotes, confirm that the price includes pulling the local permit — a bid that skips permitting is not actually cheaper, it just defers the risk to you.

Regional markets across Texas

The state is really several distinct HVAC markets. The Houston and Gulf-coast metro is defined by extreme humidity and hurricane-season power reliability, so dehumidification performance and surge protection matter. The Dallas–Fort Worth Metroplex sees the widest temperature swings, making dual-fuel and gas-heat systems more common. Central Texas — Austin, Round Rock, San Marcos and the booming Manor corridor — is one of the fastest-growing residential markets in the country, with heavy demand for new-construction and retrofit work. San Antonio pairs long cooling seasons with a large stock of older housing due for change-outs, and West Texas and El Paso remain the state’s stronghold for evaporative cooling alongside conventional AC.

Rebates can offset a high-efficiency upgrade

Because summer peak demand strains the ERCOT grid, several Texas utilities run energy-efficiency programs that rebate high-SEER2 heat pumps and air conditioners. Oncor, CenterPoint Energy, AEP Texas and CPS Energy in San Antonio have all offered residential HVAC incentives through participating contractors, and these can be stacked with federal energy-efficient home improvement tax credits. A contractor who regularly files these rebates on customers’ behalf can meaningfully lower the net cost of stepping up to a more efficient system — worth asking about before you sign.

Using this directory

The companies below serve markets across Texas, and many are concentrated around the high-growth corridors of Central Texas, the Houston metro, the DFW Metroplex and Greater San Antonio. Browse the listings, check each company’s TDLR license class against your project, and shortlist two or three for competitive bids. For commercial and industrial cooling, filter toward the mechanical contractors; for home comfort work, the residential specialists are the better first call.