Company lists · Data refreshed September 2026
Top 25 Big hvac companies based in Houston, United States
RevenueBase identified 206 big hvac companies headquartered in Houston, United States as of September 2026 and tracks 4,106 professional contacts across them, including 1,537 with verified work emails. Houston is the largest hub.
This list covers big hvac companies headquartered in Houston, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest big hvac companies based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,330 contacts → | ||||
Indirect evidence “Comfort Systems USA | Quality People.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 316 contacts → | ||||
Indirect evidence “Nailor Industries, Inc, operating under Nailor International Group, is a privately held, family-owned company with headquarters located in Houston, TX.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 175 contacts → | ||||
Indirect evidence “Way Engineering's quest for building excellence began in 1918 when a modest, but dedicated refrigeration business opened its doors in Houston, Texas.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 138 contacts → | ||||
Indirect evidence “We offer superior plumbing, air conditioning, and electrical services to Residential and Commercial clients in Houston,TX.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 122 contacts → | ||||
Indirect evidence “As the largest producer of Service Valves, Reversing Valves, Electronic Expansion Valves and Microchannel (HVACR) in the world, Sanhua has earned the trust of major HVACR brands…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 114 contacts → | ||||
Partial evidence “Custom Air Products & Services, Inc.(CAPS), an AirX Climate Solutions company, is a full-service HVAC company that specializes in the design, construction, installation…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 102 contacts → | ||||
Partial evidence “Century A/C Supply is a wholesale distributor of HVAC equipment and supplies whose mission is to be an employee-driven company providing customers with service beyond expectations.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 88 contacts → | ||||
Partial evidence “Gray Mechanical Contractors is a licensed HVAC and Plumbing contractor providing construction services for General Contractors and building owners throughout Texas.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 85 contacts → | ||||
Indirect evidence “APS is dedicated to building partnerships that enhance the comfort and productivity of our clients and their teams in the workplace.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 72 contacts → | ||||
Partial evidence “Raven Mechanical, founded 1979, is a full service mechanical contractor specializing in Plumbing and HVAC service and construction.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 67 contacts → | ||||
Indirect evidence “When it comes to maintaining comfort, keeping the lights on and water flowing, no one can compete with hometown heroes.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 64 contacts → | ||||
Partial evidence “Founded in 1974, DWD International designs, manufactures, installs, and maintains industrial HVAC, pressurization, filtration and control systems that can withstand the most…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 50 contacts → | ||||
Partial evidence “Founded in 1955, HAR-CON is a full service mechanical contractor well versed in Plumbing and HVAC.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 42 contacts → | ||||
Indirect evidence “Way Companies is a full-service commercial and industrial HVACR contractor delivering mechanical design-build, preventative maintenance, emergency service, retrofits, and building…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 41 contacts → | ||||
Partial evidence “As a leading HVAC retrofit, design, build, and services firm based in Houston, Comfort Systems USA - South Central specializes in installing, maintaining, and upgrading mechanical…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 39 contacts → | ||||
Partial evidence “Since RDI Mechanical has been Houston's go-to commercial HVAC and mechanical contractor.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 32 contacts → | ||||
Partial evidence “Founded in 1963, Roessler Equipment Company is the leading supplier of commercial HVAC products in the Houston, Texas region.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 30 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 27 contacts → | ||||
Indirect evidence “Allstyle Coil Company is a manufacturer of residential & commercial air conditioning equipment.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 26 contacts → | ||||
Partial evidence “We are a full-service commercial HVAC mechanical contractor with over 35 years of experience in the field.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 25 contacts → | ||||
Indirect evidence “At our company, we specialize in offering comprehensive heating and cooling services to ensure optimal comfort in every season.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 24 contacts → | ||||
Indirect evidence “Founded in 2012, Consolidated Services of North America (CSNA) has developed into one of the fastest growing facility service companies in the Gulf Coast Region.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 24 contacts → | ||||
Indirect evidence “With over 44 years of existence, Verbet Industries is leader in the design and manufacture of air distribution products.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 23 contacts → | ||||
Partial evidence “Established in 2005, Comflow Mechanical Services is a leading provider in commercial HVAC services in Houston, Tx.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 21 contacts → | ||||
Partial evidence “Lashley & Associates is a manufacturer's representative, as well as a distributor for major manufacturing companies serving the Heating, Ventilation, and Air Conditioning (HVAC)…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: big hvac companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names big hvac companies.
- Partial evidence
- Its own public description names part of big hvac companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name big hvac companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 206 big hvac companies based in Houston, United States
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Big hvac companies based in Houston, United States at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 206 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among big hvac companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Houston, United States whose own description of what they do matches “big hvac companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names big hvac companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among big hvac companies, and records with no verified work email. Companies headquartered outside Houston are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,537 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Big hvac companies by metro in the United States
- Big hvac companies in Houston206
- Big hvac companies in New York147
- Big hvac companies in Dallas97
- Big hvac companies in San Antonio97
- Big hvac companies in Phoenix95
- Big hvac companies in Miami86
- Big hvac companies in Tampa83
- Big hvac companies in Indianapolis82
- Big hvac companies in Charlotte74
- Big hvac companies in Austin73
- Big hvac companies in Jacksonville72
- Big hvac companies in Orlando70
- Big hvac companies in Denver66
- Big hvac companies in Louisville65
- Big hvac companies in Las Vegas61
- Big hvac companies in Chicago56
- Big hvac companies in San Diego56
- Big hvac companies in Cincinnati53
- Big hvac companies in Mesa52
- Big hvac companies in Raleigh52
- Big hvac companies in San Jose51
- Big hvac companies in Fort Worth50
- Big hvac companies in Nashville50
- Big hvac companies in Columbus46
- Big hvac companies in Tucson46
- Big hvac companies in Atlanta45
- Big hvac companies in Portland45
- Big hvac companies in Springfield45
- Big hvac companies in Columbia44
- Big hvac companies in Los Angeles44
- Big hvac companies in Salt Lake City44
- Big hvac companies in Greenville43
- Big hvac companies in Richmond41
- Big hvac companies in Sacramento40
- Big hvac companies in Wilmington39
- Big hvac companies in Colorado Springs37
- Big hvac companies in Anaheim36
- Big hvac companies in Fort Myers36
- Big hvac companies in Lexington36
- Big hvac companies in Memphis36
- Big hvac companies in Pompano Beach36
- Big hvac companies in Knoxville35
- Big hvac companies in Omaha35
- Big hvac companies in Tulsa35
- Big hvac companies in Philadelphia34
- Big hvac companies in Pittsburgh34
- Big hvac companies in Rochester34
- Big hvac companies in Sarasota34
- Big hvac companies in Albuquerque33
- Big hvac companies in Oklahoma City33
- Big hvac companies in Cleveland32
- Big hvac companies in Lancaster32
- Big hvac companies in Tempe32
- Big hvac companies in Canton31
- Big hvac companies in Dayton31
- Big hvac companies in Fort Lauderdale30
- Big hvac companies in Kansas City30
- Big hvac companies in Arlington29
- Big hvac companies in Marietta29
- Big hvac companies in Spring29
- Big hvac companies in West Palm Beach29
- Big hvac companies in Clearwater28
- Big hvac companies in Gainesville28
- Big hvac companies in Glendale28
- Big hvac companies in Baltimore27
- Big hvac companies in Birmingham26
- Big hvac companies in Burlington26
- Big hvac companies in Englewood26
- Big hvac companies in Greensboro26
- Big hvac companies in Auburn25
- Big hvac companies in Gilbert25
- Big hvac companies in Grand Rapids25
- Big hvac companies in Vancouver25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names big hvac companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many big hvac companies are there based in Houston, United States?
RevenueBase identified 206 big hvac companies headquartered in Houston, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Comfort Systems USA, headquartered in Houston, tops this list with the largest team on record.
Which city has the most big hvac companies?
Houston leads with 206 headquartered companies, followed by New York (147) and Dallas (97).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,537 verified decision-maker contacts tracked across these 206 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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