Company lists · Data refreshed September 2026
Top 25 Emergency hvac service companies based in the United States
RevenueBase identified 13,217 emergency hvac service companies headquartered in the United States as of September 2026 and tracks 118,344 professional contacts across them, including 35,193 with verified work emails. Houston is the largest hub.
This list covers emergency hvac service companies headquartered in the 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 19, 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 emergency hvac service companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,882 contacts → | ||||
Indirect evidence “American Residential Services (ARS®/Rescue Rooter®) is one of the nation’s largest providers of heating, air conditioning, indoor air quality, plumbing, drain cleaning…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,502 contacts → | ||||
Partial evidence “Service Experts is North America's leading HVAC, Plumbing & Electrical company with 75+ locations nationwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,330 contacts → | ||||
Indirect evidence “Comfort Systems USA | Quality People.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,019 contacts → | ||||
Indirect evidence “Since 1944, we’ve been family-owned and family-focused, built on values that last and a mission that matters.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 750 contacts → | ||||
Indirect evidence “CoolSys solves the most complex challenges in refrigeration, air conditioning, heating, engineering, and energy management.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 554 contacts → | ||||
Partial evidence “At Climate Pros, LLC, we are a leading commercial refrigeration and HVAC company specializing in the design, construction, and servicing of refrigeration systems across thousands…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 539 contacts → | ||||
Indirect evidence “DEEM, LLC is a mechanical and electrical company centrally located in Fishers, Indiana with satellite offices throughout the Midwest down to the southeastern United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 526 contacts → | ||||
Indirect evidence “When homeowners want a reliable heater or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 523 contacts → | ||||
Partial evidence “In business for over 45 years, Texas AirSystems has grown to be recognized as one of the premier partners for commercial HVAC solutions in Texas, boasting over 500 associates…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 448 contacts → | ||||
Indirect evidence “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 445 contacts → | ||||
Indirect evidence “Since 1947, Hoffman & Hoffman, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 420 contacts → | ||||
Indirect evidence “For up-to-date information, please see the CoolSys profile page.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 415 contacts → | ||||
Indirect evidence “We are powered by the best people in the industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 391 contacts → | ||||
Indirect evidence “Strada Services is a full service electrical, security, and air conditioning contracting company servicing residential, commercial, and industrial customers in Florida and in the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 371 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 369 contacts → | ||||
Indirect evidence “For consumer services visit To discover more about franchise opportunities with Aire Serv® in your area visit Established in 1992, Aire Serv® is a global franchise organization…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 368 contacts → | ||||
Indirect evidence “Hiller provides residential and commercial service and repair throughout Tennessee, Southern Kentucky, Northern Alabama, Southeastern Arkansas, Northeastern Mississippi, Northern…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 348 contacts → | ||||
Indirect evidence “Whether building quality work environments, valuable relationships or community ties, Air Systems never cuts corners.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 346 contacts → | ||||
Strong evidence “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 340 contacts → | ||||
Indirect evidence “Since 1962, Brady has been committed to delivering innovative, sustainable building solutions that drive long-term success for our customers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 338 contacts → | ||||
Partial evidence “Lennox National Account Services (Lennox NAS) is the leading HVAC commercial service company with technicians located nationwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 333 contacts → | ||||
Partial evidence “Havtech delivers innovative commercial and industrial HVAC solutions across Maryland, Washington, D.C, Virginia, Pennsylvania, and West Virginia.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 330 contacts → | ||||
Partial evidence “The Habegger Corporation | Complete HVAC Solutions since 1952.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 323 contacts → | ||||
Partial evidence “Boland is the leading commercial HVAC systems, services, and building energy solutions provider in the DC metro area.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 312 contacts → | ||||
Indirect evidence “Providing the Arizona Valley with award-winning service in Heating, Cooling, Plumbing, and Drain Cleaning Service since 1974.” Source: RevenueBase Database · checked Sep 19, 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: emergency hvac service 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 emergency hvac service companies.
- Partial evidence
- Its own public description names part of emergency hvac service companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name emergency hvac service 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 13,217 emergency hvac service companies based in the United States
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Emergency hvac service companies based in the United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 13,217 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 emergency hvac service 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 the United States whose own description of what they do matches “emergency hvac service 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 emergency hvac service 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 emergency hvac service companies, and records with no verified work email. Companies headquartered outside United States 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, 35,193 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 19, 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.
Emergency hvac service companies by metro
- Emergency hvac service companies in Houston179
- Emergency hvac service companies in New York132
- Emergency hvac service companies in San Antonio94
- Emergency hvac service companies in Phoenix89
- Emergency hvac service companies in Tampa82
- Emergency hvac service companies in Dallas78
- Emergency hvac service companies in Miami72
- Emergency hvac service companies in Denver64
- Emergency hvac service companies in Austin63
- Emergency hvac service companies in Indianapolis62
- Emergency hvac service companies in Jacksonville62
- Emergency hvac service companies in Charlotte60
- Emergency hvac service companies in Las Vegas60
- Emergency hvac service companies in Orlando57
- Emergency hvac service companies in Mesa52
- Emergency hvac service companies in Louisville51
- Emergency hvac service companies in Raleigh50
- Emergency hvac service companies in San Diego49
- Emergency hvac service companies in Chicago47
- Emergency hvac service companies in Tucson46
- Emergency hvac service companies in Los Angeles44
- Emergency hvac service companies in Greenville43
- Emergency hvac service companies in Fort Worth41
- Emergency hvac service companies in Springfield41
- Emergency hvac service companies in Nashville39
- Emergency hvac service companies in Richmond39
- Emergency hvac service companies in San Jose39
- Emergency hvac service companies in Cincinnati38
- Emergency hvac service companies in Columbia38
- Emergency hvac service companies in Columbus38
- Emergency hvac service companies in Fort Myers38
- Emergency hvac service companies in Atlanta37
- Emergency hvac service companies in Sarasota36
- Emergency hvac service companies in Colorado Springs35
- Emergency hvac service companies in Anaheim34
- Emergency hvac service companies in Pompano Beach34
- Emergency hvac service companies in Portland34
- Emergency hvac service companies in Glendale33
- Emergency hvac service companies in Memphis33
- Emergency hvac service companies in Knoxville32
- Emergency hvac service companies in Tempe32
- Emergency hvac service companies in Wilmington32
- Emergency hvac service companies in Lexington31
- Emergency hvac service companies in Omaha31
- Emergency hvac service companies in Sacramento31
- Emergency hvac service companies in Salt Lake City31
- Emergency hvac service companies in Tulsa31
- Emergency hvac service companies in Fort Lauderdale30
- Emergency hvac service companies in Rochester30
- Emergency hvac service companies in Spring30
- Emergency hvac service companies in Dayton28
- Emergency hvac service companies in Albuquerque27
- Emergency hvac service companies in Arlington27
- Emergency hvac service companies in Auburn27
- Emergency hvac service companies in Gilbert27
- Emergency hvac service companies in West Palm Beach27
- Emergency hvac service companies in Baltimore26
- Emergency hvac service companies in Chandler26
- Emergency hvac service companies in Englewood26
- Emergency hvac service companies in Marietta26
- Emergency hvac service companies in Philadelphia26
- Emergency hvac service companies in Pittsburgh26
- Emergency hvac service companies in Gainesville25
- Emergency hvac service companies in Oklahoma City25
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 emergency hvac service 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 emergency hvac service companies are there based in the United States?
RevenueBase identified 13,217 emergency hvac service companies headquartered in the 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?
American Residential Services, headquartered in Memphis, tops this list with the largest team on record.
Which city has the most emergency hvac service companies?
Houston leads with 179 headquartered companies, followed by New York (132) and San Antonio (94).
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 35,193 verified decision-maker contacts tracked across these 13,217 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 13,217 emergency hvac service companies based in the United States. Start with a free account, no credit card.
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Emergency hvac service companies by geography
- Emergency hvac service companies based in Sao Paulo, Brazil
- Emergency hvac service companies based in Brampton, Canada
- Emergency hvac service companies based in Burnaby, Canada
- Emergency hvac service companies based in Calgary, Canada
- Emergency hvac service companies based in Edmonton, Canada
- Emergency hvac service companies based in Mississauga, Canada
- Emergency hvac service companies based in Ottawa, Canada
- Emergency hvac service companies based in Toronto, Canada
- Emergency hvac service companies based in Vaughan, Canada
- Emergency hvac service companies based in Winnipeg, Canada
- Emergency hvac service companies based in Mumbai, India
- Emergency hvac service companies based in Albuquerque, United States
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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