Company lists · Data refreshed September 2026

Top 25 Hvac contractors for data centers based in the United States

Name: Hvac contractors for data centers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 7,793 companies tracked

RevenueBase identified 7,793 hvac contractors for data centers headquartered in the United States as of September 2026 and tracks 89,703 professional contacts across them, including 30,483 with verified work emails. Houston is the largest hub.

This list covers hvac contractors for data centers 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 16, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

7,793Companies

89,703Contacts tracked

30,483Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest hvac contractors for data centers based in the United States

Ranked by team size

Top 25 of 7,793 hvac contractors for data centers based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to hvac contractors for data centers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Johnstone Supply	Partial evidence	Portland, OR, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,664 contacts →
	Partial evidence “Making it easier for HVACR contractors to do business.” Source: RevenueBase Database · checked Sep 16, 2026
2	Comfort Systems USA	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	10001+	1,330 contacts →
	Indirect evidence “Comfort Systems USA \| Quality People.” Source: RevenueBase Database · checked Sep 16, 2026
3	Mckenney's, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,077 contacts →
	Indirect evidence “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Source: RevenueBase Database · checked Sep 16, 2026
4	Cmta, INC	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 16, 2026	501-1,000	936 contacts →
	Indirect evidence “CMTA is part of Legence, a Nasdaq Listed company.” Source: RevenueBase Database · checked Sep 16, 2026
5	Baltimore Aircoil Company	Indirect evidence	Jessup, MD, United StatesHQ checked Sep 16, 2026	1,001-5,000	906 contacts →
	Indirect evidence “At BAC, we don’t just build cooling systems, we shape the future of sustainable solutions.” Source: RevenueBase Database · checked Sep 16, 2026
6	Coolsys	Indirect evidence	Brea, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	750 contacts →
	Indirect evidence “CoolSys solves the most complex challenges in refrigeration, air conditioning, heating, engineering, and energy management.” Source: RevenueBase Database · checked Sep 16, 2026
7	Baker Group	Partial evidence	Ankeny, IA, United StatesHQ checked Sep 16, 2026	1,001-5,000	655 contacts →
	Partial evidence “Established in 1963, Baker Group is Iowa’s premier full-service specialty contractor-serving commercial, industrial, institutional, and mission-critical markets across the country.” Source: RevenueBase Database · checked Sep 16, 2026
8	Climate Pros, LLC	Partial evidence	Glendale Heights, IL, United StatesHQ checked Sep 16, 2026	1,001-5,000	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 16, 2026
9	Deem, LLC	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 16, 2026	1,001-5,000	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 16, 2026
10	ONE Hour Heating & AIR Conditioning	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 16, 2026	1,001-5,000	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 16, 2026
11	Texas Airsystems	Partial evidence	Irving, TX, United StatesHQ checked Sep 16, 2026	201-500	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 16, 2026
12	Therma	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	482 contacts →
	Indirect evidence “Therma is part of Legence, a Blackstone portfolio company, specially created to be an Energy Transition Accelerator™.” Source: RevenueBase Database · checked Sep 16, 2026
13	MSS Solutions, LLC	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 16, 2026	501-1,000	470 contacts →
	Indirect evidence “Since 1996, MSS has made thousands of facilities more efficient, comfortable, secure and reliable for owners, operators and occupiers across the Carolinas and throughout North…” Source: RevenueBase Database · checked Sep 16, 2026
14	Horizon Services, LLC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 16, 2026	501-1,000	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 16, 2026
15	Hoffman & Hoffman, INC	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	445 contacts →
	Indirect evidence “Since 1947, Hoffman & Hoffman, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
16	Nv5 Data Centre & Mission Critical	Indirect evidence	Hollywood, FL, United StatesHQ checked Sep 16, 2026	201-500	423 contacts →
	Indirect evidence “NV5 Mission Critical is a trusted leader in mission-critical design and commissioning management with a strong international presence.” Source: RevenueBase Database · checked Sep 16, 2026
17	Source Refrigeration & Hvac	Indirect evidence	Brea, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	420 contacts →
	Indirect evidence “For up-to-date information, please see the CoolSys profile page.” Source: RevenueBase Database · checked Sep 16, 2026
18	John W. Danforth Company	Indirect evidence	Tonawanda, NY, United StatesHQ checked Sep 16, 2026	501-1,000	415 contacts →
	Indirect evidence “We are powered by the best people in the industry.” Source: RevenueBase Database · checked Sep 16, 2026
19	Integra	Strong evidence	Dallas, TX, United StatesHQ checked Sep 16, 2026	501-1,000	373 contacts →
	Strong evidence “Integra is an industry-leading team designing & delivering innovative turnkey data centers.” Source: RevenueBase Database · checked Sep 16, 2026
20	AIR Systems, INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	201-500	348 contacts →
	Indirect evidence “Whether building quality work environments, valuable relationships or community ties, Air Systems never cuts corners.” Source: RevenueBase Database · checked Sep 16, 2026
21	United Mechanical	Partial evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	201-500	346 contacts →
	Partial 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 16, 2026
22	Brady Services	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 16, 2026	501-1,000	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 16, 2026
23	Lennox National Account Services	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 16, 2026	10001+	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 16, 2026
24	Havtech	Partial evidence	Columbia, MD, United StatesHQ checked Sep 16, 2026	201-500	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 16, 2026
25	Boland	Partial evidence	Gaithersburg, MD, United StatesHQ checked Sep 16, 2026	201-500	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 16, 2026

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: hvac contractors for data centers. 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 hvac contractors for data centers.
Partial evidence: Its own public description names part of hvac contractors for data centers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac contractors for data centers. 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 7,793 hvac contractors for data centers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 30,483 reachable decision-makers.

Free signup · no credit card

View the full list →

Hvac contractors for data centers based in the United States at a glance

As of Sep 16, 2026

34.0%Verified-email coverage

11.5Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

3,449

11-50

3,106

51-200

910

201-500

155

501-1,000

1,001-5,000

5,001-10,000

10001+

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 7,793 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 hvac contractors for data centers, 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 “hvac contractors for data centers”. 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 hvac contractors for data centers), 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 hvac contractors for data centers, 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, 30,483 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 16, 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.

Hvac contractors for data centers by metro

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 hvac contractors for data centers, 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 hvac contractors for data centers are there based in the United States?

RevenueBase identified 7,793 hvac contractors for data centers 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?

Johnstone Supply, headquartered in Portland, tops this list with the largest team on record.

Which city has the most hvac contractors for data centers?

Houston leads with 123 headquartered companies, followed by New York (100) and San Antonio (60).

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 30,483 verified decision-maker contacts tracked across these 7,793 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 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 7,793 hvac contractors for data centers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Hvac contractors for data centers by geography

Browse the directory

Browse: Companies home · All United States lists · All Hvac contractors for data centers lists · New lists

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.