Company lists · Data refreshed September 2026

Top 25 Hvac systems based in the United States

Name: Hvac systems based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 14,901 companies tracked

RevenueBase identified 14,901 hvac systems headquartered in the United States as of September 2026 and tracks 203,694 professional contacts across them, including 70,365 with verified work emails. Houston is the largest hub.

This list covers hvac systems 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 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

14,901Companies

203,694Contacts tracked

70,365Verified emails

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The 25 largest hvac systems based in the United States

Ranked by team size

Top 25 of 14,901 hvac systems based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to hvac systems: 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	Daikin Applied Americas	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 21, 2026	10001+	4,204 contacts →
	Indirect evidence “Daikin Applied delivers superior air quality and energy efficiency to every solution with innovation in advanced technology, IoT, and next generation compressors.” Source: RevenueBase Database · checked Sep 21, 2026
2	Johnstone Supply	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,664 contacts →
	Indirect evidence “Making it easier for HVACR contractors to do business.” Source: RevenueBase Database · checked Sep 21, 2026
3	Acco Engineered Systems	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 21, 2026	5,001-10,000	2,415 contacts →
	Partial evidence “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Source: RevenueBase Database · checked Sep 21, 2026
4	Goodman AIR Conditioning & Heating	Indirect evidence	Waller, TX, United StatesHQ checked Sep 21, 2026	10001+	2,375 contacts →
	Indirect evidence “Since 1982, Goodman Manufacturing has had one goal: provide customers with reliable, high-quality, energy-efficient, and affordable indoor comfort products.” Source: RevenueBase Database · checked Sep 21, 2026
5	Carrier Enterprise	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,891 contacts →
	Indirect evidence “Carrier Enterprise is a joint venture between Watsco, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
6	American Residential Services	Indirect evidence	Memphis, TN, United StatesHQ checked Sep 21, 2026	5,001-10,000	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 21, 2026
7	Service Experts	Partial evidence	Richardson, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	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 21, 2026
8	Emcor Group, INC	Indirect evidence	Norwalk, CT, United StatesHQ checked Sep 21, 2026	10001+	1,383 contacts →
	Indirect evidence “A Fortune 500® company and a member of the S&P 500, EMCOR Group, Inc.(NYSE: EME) is a leader in mechanical and electrical construction, industrial and energy infrastructure, and…” Source: RevenueBase Database · checked Sep 21, 2026
9	Comfort Systems USA	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	10001+	1,330 contacts →
	Partial evidence “Comfort Systems USA \| Quality People.” Source: RevenueBase Database · checked Sep 21, 2026
10	Aaon, INC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,208 contacts →
	Partial evidence “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Source: RevenueBase Database · checked Sep 21, 2026
11	Mckenney's, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 21, 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 21, 2026
12	LEE Company	Indirect evidence	Franklin, TN, United StatesHQ checked Sep 21, 2026	1,001-5,000	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 21, 2026
13	Cmta, INC	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 21, 2026	501-1,000	936 contacts →
	Indirect evidence “CMTA is part of Legence, a Nasdaq Listed company.” Source: RevenueBase Database · checked Sep 21, 2026
14	Baltimore Aircoil Company	Partial evidence	Jessup, MD, United StatesHQ checked Sep 21, 2026	1,001-5,000	906 contacts →
	Partial evidence “At BAC, we don’t just build cooling systems, we shape the future of sustainable solutions.” Source: RevenueBase Database · checked Sep 21, 2026
15	Stellar	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 21, 2026	501-1,000	899 contacts →
	Indirect evidence “Stellar, headquartered in Jacksonville, Florida, is a fully integrated firm focusing on design, engineering, construction, refrigeration, and mechanical and electrical services…” Source: RevenueBase Database · checked Sep 21, 2026
16	R.E. Michel Company, LLC	Indirect evidence	Glen Burnie, MD, United StatesHQ checked Sep 21, 2026	1,001-5,000	873 contacts →
	Indirect evidence “The R.E.” Source: RevenueBase Database · checked Sep 21, 2026
17	Climatec, LLC	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 21, 2026	1,001-5,000	863 contacts →
	Indirect evidence “Climatec has been making buildings safer, more comfortable and efficient for over 40 years.” Source: RevenueBase Database · checked Sep 21, 2026
18	AHERN	Partial evidence	Fond Du Lac, WI, United StatesHQ checked Sep 21, 2026	1,001-5,000	849 contacts →
	Partial evidence “Ahern is a mechanical and fire protection contractor specializing in HVAC, Plumbing, Building Controls, Sprinkler, Extinguisher & Alarm and Fabrication for construction and…” Source: RevenueBase Database · checked Sep 21, 2026
19	Coolsys	Indirect evidence	Brea, CA, United StatesHQ checked Sep 21, 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 21, 2026
20	Albireo Energy	Indirect evidence	Edison, NJ, United StatesHQ checked Sep 21, 2026	1,001-5,000	669 contacts →
	Indirect evidence “Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Source: RevenueBase Database · checked Sep 21, 2026
21	Baker Group	Indirect evidence	Ankeny, IA, United StatesHQ checked Sep 21, 2026	1,001-5,000	655 contacts →
	Indirect 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 21, 2026
22	Colonialwebb	Indirect evidence	Richmond, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	571 contacts →
	Indirect evidence “ColonialWebb is built on a simple belief: when people feel like they belong and have a purpose, they can achieve almost anything.” Source: RevenueBase Database · checked Sep 21, 2026
23	F.E. Moran Group Of Companies	Indirect evidence	Northbrook, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	564 contacts →
	Indirect evidence “At F.E.” Source: RevenueBase Database · checked Sep 21, 2026
24	Climate Pros, LLC	Strong evidence	Glendale Heights, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	554 contacts →
	Strong 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 21, 2026
25	Environmental AIR Systems	Indirect evidence	High Point, NC, United StatesHQ checked Sep 21, 2026	1,001-5,000	545 contacts →
	Indirect evidence “For generations, EAS Companies has been an innovative provider delivering complete solutions in mechanical, electrical, plumbing, building services, controls, and engineered…” Source: RevenueBase Database · checked Sep 21, 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 systems. 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 systems.
Partial evidence: Its own public description names part of hvac systems, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac systems. 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 14,901 hvac systems based in the United States

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Hvac systems based in the United States at a glance

As of Sep 21, 2026

34.5%Verified-email coverage

13.7Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

6,378

11-50

5,870

51-200

1,923

201-500

361

501-1,000

114

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 14,901 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 systems, 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 systems”. 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 systems), 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 systems, 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, 70,365 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.

Hvac systems 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 systems, 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 systems are there based in the United States?

RevenueBase identified 14,901 hvac systems 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?

Daikin Applied Americas, headquartered in Minneapolis, tops this list with the largest team on record.

Which city has the most hvac systems?

Houston leads with 214 headquartered companies, followed by New York (155) and San Antonio (100).

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 70,365 verified decision-maker contacts tracked across these 14,901 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.