Company lists · Data refreshed October 2026

Top 25 Hvac design and engineering firms worldwide

Name: Hvac design and engineering firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 14, 2026 38,056 companies tracked

RevenueBase identified 38,056 company matches for hvac design and engineering firms worldwide as of October 2026 and tracks 500,066 professional contacts across them, including 142,716 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for hvac design and engineering firms worldwide, 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 October 14, 2026. Country and city lists for hvac design and engineering firms follow the table.

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 Oct 14, 2026 How this list was built

38,056Companies

500,066Contacts tracked

142,716Verified emails

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The 25 largest hvac design and engineering firms worldwide

Ranked by team size

Top 25 of 38,056 company matches for hvac design and engineering firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 14, 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	Johnson Controls	Exact match	Cork, IrelandHQ recorded Oct 14, 2026	10001+	54,046 contacts →
	Exact match “Johnson Controls is a global leader in thermal management, mission-critical building systems, energy efficiency and decarbonization.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
2	Equans	Exact match	Courbevoie, FranceHQ recorded Oct 14, 2026	10001+	5,490 contacts →
	Exact match “Equans, a Bouygues group company, is a world leader in multi-technical services with offices in 20 country hubs.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
3	Equans Belux	Exact match	Brussels, BelgiumHQ recorded Oct 14, 2026	5,001-10,000	5,347 contacts →
	Exact match “What if you could use your talent to contribute to the great challenges of tomorrow?” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
4	Southland Industries	Exact match	Garden Grove, CA, United StatesHQ recorded Oct 14, 2026	10001+	3,010 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 · Oct 14, 2026 · View company records in RevenueBase
5	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Oct 14, 2026	5,001-10,000	2,573 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 · Oct 14, 2026 · View company records in RevenueBase
6	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Oct 14, 2026	1,001-5,000	2,064 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
7	Modern Niagara	Exact match	Kanata, ON, CanadaHQ recorded Oct 14, 2026	1,001-5,000	1,585 contacts →
	Exact match “We build for life.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
8	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Oct 14, 2026	10001+	1,443 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 · Oct 14, 2026 · View company records in RevenueBase
9	Macdonald-Miller Facility Solutions	Exact match	Seatac, WA, United StatesHQ recorded Oct 14, 2026	1,001-5,000	1,365 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 · Oct 14, 2026 · View company records in RevenueBase
10	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Oct 14, 2026	10001+	1,354 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
11	Bravida Danmark A S	Exact match	Brøndby, DenmarkHQ recorded Oct 14, 2026	1,001-5,000	1,342 contacts →
	Exact match “Bravida Danmark er blandt landets største tekniske installations- og servicevirksomheder med over medarbejdere i byer landet over, og vi er en arbejdsplads, der har plads til alle.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
12	Aaon, INC	Exact match	Tulsa, OK, United StatesHQ recorded Oct 14, 2026	1,001-5,000	1,315 contacts →
	Exact match “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
13	Hoare LEA	Exact match	London, United KingdomHQ recorded Oct 14, 2026	501-1,000	1,146 contacts →
	Exact match “We are an award-winning engineering consultancy with a creative team of engineers, designers, and technical specialists.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
14	Henderson Engineers	Exact match	Lenexa, KS, United StatesHQ recorded Oct 14, 2026	501-1,000	1,096 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 · Oct 14, 2026 · View company records in RevenueBase
15	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Oct 14, 2026	1,001-5,000	1,088 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
16	Cmta, INC	Exact match	Louisville, KY, United StatesHQ recorded Oct 14, 2026	501-1,000	1,016 contacts →
	Exact match “CMTA is part of Legence, a Nasdaq Listed company.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
17	Ventec S.A	Exact match	Casablanca, MoroccoHQ recorded Oct 14, 2026	1,001-5,000	971 contacts →
	Exact match “La Société Ventec a été créée au Maroc en 1949 par Monsieur Albert MARQUET Président Directeur Général de Ventec en France.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
18	MCI SAS	Exact match	Carquefou, FranceHQ recorded Oct 14, 2026	1,001-5,000	968 contacts →
	Exact match “Spécialiste du froid et la climatisation depuis 60 ans, MCI s'engage à vous offrir un grand choix de solutions et de services parfaitement adaptés à vos exigences.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
19	Stellar	Exact match	Jacksonville, FL, United StatesHQ recorded Oct 14, 2026	501-1,000	922 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 · Oct 14, 2026 · View company records in RevenueBase
20	M. N. Dastur & Co. P LTD	Exact match	Kolkata, IndiaHQ recorded Oct 14, 2026	1,001-5,000	904 contacts →
	Exact match “M.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
21	Bravida Norge AS	Exact match	Oslo, NorwayHQ recorded Oct 14, 2026	1,001-5,000	898 contacts →
	Exact match “Bravida gir bygninger liv.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
22	ARE OY	Exact match	Vantaa, FinlandHQ recorded Oct 14, 2026	1,001-5,000	896 contacts →
	Exact match “Dedicated to engineering a better life for your building.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
23	AHERN	Exact match	Fond Du Lac, WI, United StatesHQ recorded Oct 14, 2026	1,001-5,000	884 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 · Oct 14, 2026 · View company records in RevenueBase
24	Hesco Engineering Services	Exact match	Jeddah, Saudi ArabiaHQ recorded Oct 14, 2026	501-1,000	841 contacts →
	Exact match “Hesco is a design and engineering rm located in the Kingdom of Saudi Arabia with oces in Jeddah, Riyadh, Makkah, Syria, Turkey, Egypt, Spain and Lebanon.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
25	Syska Hennessy Group	Exact match	New York, United StatesHQ recorded Oct 14, 2026	501-1,000	835 contacts →
	Exact match “Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded in the RevenueBase company graph · Oct 14, 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 design and 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 38,056 hvac design and engineering firms worldwide

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Hvac design and engineering firms worldwide at a glance

As of Oct 14, 2026

28.5%Verified-email coverage

13.1Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · Sao Paulo

Oct 14, 2026Page data refreshed

Companies by employee count

1-10

17,378

11-50

14,426

51-200

4,489

201-500

947

501-1,000

246

1,001-5,000

167

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for hvac design and engineering firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “hvac design and 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. 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 142,716 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 October 14, 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 design and engineering firms by location

162 lists · largest first

Every Hvac design and engineering firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 design and engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hvac design and engineering firms are there worldwide?

RevenueBase identified 38,056 company matches for hvac design and engineering firms worldwide as of October 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?

Johnson Controls tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most hvac design and engineering firms?

The United States leads with 10,922 companies, followed by Germany (1,843) and France (1,824). Every hvac design and engineering firms list by country and city is linked on this page.

Which city has the most hvac design and engineering firms?

Sao Paulo leads with 362 company records, followed by Dubai (217) and New York (200).

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 142,716 professional contacts with verified work emails tracked across these 38,056 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 October 14, 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.