The Best HVAC Companies in Dallas

Dalco has been a family business in Dallas since 1963 and says four generations now work in it, with founder Ken Oringderff still named as president. It publishes its Texas air conditioning and refrigeration licence number in plain sight, TACLA001755C, which is a Class A licence, meaning no cap on the size of equipment it may work on, and the low number is consistent with a company that has held it a very long time. It also publishes a master plumber number, M18369.

It is a Dave Lennox Premier Dealer, the manufacturer's top tier, and it takes residential, commercial and industrial work out of the same building on Military Parkway rather than from a call centre. Install, repair, maintenance, duct cleaning and indoor air quality are all in house. If you want one company that can take a twenty-year-old house system and a small commercial unit, this is the one with both the licence class and the record to do it.

Trading since 1945, which is the longest run of any residential company here, and the only one on this page open seven days a week from 7 a.m. to 7 p.m. It publishes three licence numbers in its footer against the name Jimmie Dale Jr.: M-30505 for plumbing, TACLB00052136E for air conditioning and TECL 33750 for electrical. One company, three regulated trades, which is genuinely useful when the fix turns out to straddle two of them.

One point of accuracy, because this article is about licences. That air conditioning licence is a Class B, which under Texas rules is limited to cooling units of 25 tons and under and heating of 1.5 million BTU per hour and under. For a house that is not a limitation at all, since a large home system is five tons. For a commercial building it is. Four locations are listed, Dallas, Arlington, McKinney and Keller, and the Dallas one sits out on Big Town Boulevard near the Mesquite line.

Family owned and serving Dallas since 1989 from a unit on Plano Road, Quality 1 is the middle ground on this page. It is small enough that you deal with the same people twice, and it carries a commercial mechanical construction and engineering line alongside the residential work, which most shops this size do not.

The service list is wider than heating and cooling: ductless mini splits, indoor air quality, duct and vent cleaning, plus insulation and window installation, which is the honest answer to a hot upstairs room more often than a bigger air conditioner is. The one mark against it under this article's test is that its own site does not publish its licence number, so you will have to ask for it and look it up yourself.

Founded by Josh Campbell with his uncle Michael Hirsh and trading for more than twelve years, Rescue Air added plumbing by acquiring Texas Green Plumbing in 2021 and then moved from Richardson into its own Lake Highlands building on Greenville Avenue, a relocation Community Impact reported at the time. That is a useful kind of evidence: an independent local paper noting a company putting down a Dallas address.

Residential air conditioning and heating, heat pumps, air handlers, thermostats, duct cleaning, indoor air quality and plumbing, with a maintenance club. Two honest notes. Its site does not publish a licence number, and much of the easily found coverage of the company is sponsored content rather than reporting, so we have leaned on the one news item and the company's own address.

Family owned and working the Dallas-Fort Worth area since 1975, Ellis is a Carrier Factory Authorized Dealer, which is the manufacturer's highest designation and carries technician certification and customer satisfaction requirements behind it. It covers residential, commercial and new construction, including ductwork and mini splits.

Where it sits matters. The operating base is Cedar Hill, in the southwest corner of Dallas County, so this is the strong pick if you are in Oak Cliff, Duncanville, DeSoto or anywhere south of the river, and a long drive if you are in Richardson. It also lists a Dallas address at 1717 McKinney Avenue, Suite 700, which is an office tower rather than a service yard, so do not expect a van to be parked there. Its site states TDLR licensing but publishes no number.

The first of two commercial entries, and the one to call first if you run a building rather than a house, because Kahn says plainly on its own site that it does commercial systems only. It has been in Dallas since 1974, it is second generation family owned, and it publishes its licence, TACL A16607C, which is a Class A with no equipment size limit. It is also certified as a Woman-Owned Business Enterprise and a Texas HUB, which matters if your building takes public contracts.

The scope is what a commercial building actually needs: rooftop units, chillers, boilers, VRF systems, cooling towers, commercial kitchen and refrigeration work, building automation, preventive maintenance and mechanical construction, with a 24 hour line. The Design District address is a working yard, not an office suite.

The largest name on this page and the one with the deepest outside record. Founded in 1946, TDIndustries is 100 percent employee owned and has been named one of Fortune magazine's 100 Best Places to Work twenty-one years running, which is a third-party judgement that very few contractors in any trade can point to. It also appears in ENR's Top 600 Specialty Subcontractors and holds a stack of Associated Builders and Contractors safety awards.

This is mechanical construction, engineering, prefabrication, process piping, facilities management, building automation and HVAC, plumbing and electrical service. Not a company that will come and look at the unit behind your house. It is here because if you are specifying mechanical work on a Dallas building, it is the benchmark. One note consistent with how we treat everyone: its own contact page gives a national phone number and no street address, pointing instead to a locations and licences page.