Company lists · Data refreshed September 2026

Top 25 Hvac engineering firms based in the United States

Name: Hvac engineering firms 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 13,017 companies tracked

RevenueBase identified 13,017 company matches for hvac engineering firms associated with the United States as of September 2026 and tracks 193,801 professional contacts across them, including 75,953 with verified work emails. Houston is the largest hub.

This list covers company matches for hvac engineering firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 16, 2026 How this list was built

13,017Companies

193,801Contacts tracked

75,953Verified emails

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The 25 largest hvac engineering firms based in the United States

Ranked by team size

Top 25 of 13,017 company matches for hvac engineering firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Daikin Applied Americas	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 16, 2026	10001+	4,204 contacts →
	Exact match “Daikin Applied delivers superior air quality and energy efficiency to every solution with innovation in advanced technology, IoT, and next generation compressors.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2	Southland Industries	Exact match	Garden Grove, CA, United StatesHQ recorded Sep 16, 2026	10001+	2,439 contacts →
	Exact match “As one of the nation's largest building systems experts, Southland Industries provides innovative, practical results for your engineering, construction, service, and energy needs.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Sep 16, 2026	5,001-10,000	2,415 contacts →
	Exact match “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4	Goodman AIR Conditioning & Heating	Exact match	Waller, TX, United StatesHQ recorded Sep 16, 2026	10001+	2,375 contacts →
	Exact match “Since 1982, Goodman Manufacturing has had one goal: provide customers with reliable, high-quality, energy-efficient, and affordable indoor comfort products.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,985 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Sep 16, 2026	10001+	1,383 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Sep 16, 2026	10001+	1,330 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8	Macdonald-Miller Facility Solutions	Exact match	Seatac, WA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,303 contacts →
	Exact match “MacDonald-Miller Facility Solutions is a full-service, design-build mechanical contractor in the Pacific Northwest.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9	Aaon, INC	Exact match	Tulsa, OK, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,208 contacts →
	Exact match “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,077 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11	Henderson Engineers	Exact match	Lenexa, KS, United StatesHQ recorded Sep 16, 2026	501-1,000	1,040 contacts →
	Exact match “Henderson Engineers is a national building systems design firm with a wide array of engineering services and a portfolio representing a full range of markets including business…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12	Cmta, INC	Exact match	Louisville, KY, United StatesHQ recorded Sep 16, 2026	501-1,000	936 contacts →
	Exact match “CMTA is part of Legence, a Nasdaq Listed company.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13	Stellar	Exact match	Jacksonville, FL, United StatesHQ recorded Sep 16, 2026	501-1,000	899 contacts →
	Exact match “Stellar, headquartered in Jacksonville, Florida, is a fully integrated firm focusing on design, engineering, construction, refrigeration, and mechanical and electrical services…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	Climatec, LLC	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 16, 2026	1,001-5,000	863 contacts →
	Exact match “Climatec has been making buildings safer, more comfortable and efficient for over 40 years.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15	AHERN	Exact match	Fond Du Lac, WI, United StatesHQ recorded Sep 16, 2026	1,001-5,000	849 contacts →
	Exact match “Ahern is a mechanical and fire protection contractor specializing in HVAC, Plumbing, Building Controls, Sprinkler, Extinguisher & Alarm and Fabrication for construction and…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	Syska Hennessy Group	Exact match	New York, United StatesHQ recorded Sep 16, 2026	501-1,000	803 contacts →
	Exact match “Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	Coolsys	Exact match	Brea, CA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	750 contacts →
	Exact match “CoolSys solves the most complex challenges in refrigeration, air conditioning, heating, engineering, and energy management.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18	PAE	Exact match	Portland, OR, United StatesHQ recorded Sep 16, 2026	201-500	744 contacts →
	Exact match “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	Kinetics	Exact match	Livermore, CA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	734 contacts →
	Exact match “Founded in 1973, Kinetics is a full-service process and mechanical contractor specializing in the design and installation of process, mechanical, plumbing and HVAC systems.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20	ME Engineers	Exact match	Golden, CO, United StatesHQ recorded Sep 16, 2026	201-500	696 contacts →
	Exact match “ME Engineers has earned a reputation as a global leader in the design of innovative MEPT systems that bring to life the world's most innovative sports and entertainment venues.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21	Albireo Energy	Exact match	Edison, NJ, United StatesHQ recorded Sep 16, 2026	1,001-5,000	669 contacts →
	Exact match “Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22	Colonialwebb	Exact match	Richmond, VA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	571 contacts →
	Exact match “ColonialWebb is built on a simple belief: when people feel like they belong and have a purpose, they can achieve almost anything.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23	F.E. Moran Group Of Companies	Exact match	Northbrook, IL, United StatesHQ recorded Sep 16, 2026	1,001-5,000	564 contacts →
	Exact match “At F.E.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24	Climate Pros, LLC	Exact match	Glendale Heights, IL, United StatesHQ recorded Sep 16, 2026	1,001-5,000	554 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25	Vanderweil Engineers	Exact match	Boston, MA, United StatesHQ recorded Sep 16, 2026	201-500	545 contacts →
	Exact match “Vanderweil is a mechanical, electrical, plumbing, fire protection, technology, sustainability, commissioning, and power engineering firm dedicated to providing customized and…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “hvac engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 13,017 hvac engineering firms based in the United States

See the full list, filter by size, metro and specialty, and access 75,953 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hvac engineering firms based in the United States at a glance

As of Sep 16, 2026

39.2%Verified-email coverage

14.9Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

5,640

11-50

5,141

51-200

1,654

201-500

311

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 13,017 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “hvac engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 75,953 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Hvac engineering firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “hvac engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hvac engineering firms are there based in the United States?

RevenueBase identified 13,017 company matches for hvac engineering firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Daikin Applied Americas tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most hvac engineering firms?

Houston leads with 203 company records, followed by New York (203) and San Antonio (95).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 75,953 professional contacts with verified work emails tracked across these 13,017 companies; direct dials are available where recorded.

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.

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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 SmartSearch, 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.