Company lists · Data refreshed September 2026

Top 25 Data center mechanical contractors worldwide

RevenueBase identified 20,944 data center mechanical contractors worldwide as of September 2026 and tracks 371,974 professional contacts across them, including 109,218 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers data center mechanical contractors worldwide, 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. Country and city lists for data center mechanical contractors follow the table.

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
20,944Companies
371,974Contacts tracked
109,218Verified emails
0Mobile numbers
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The 25 largest data center mechanical contractors worldwide

Ranked by team size
Top 25 of 20,944 data center mechanical contractors worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to data center mechanical contractors: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceCork, IrelandHQ checked Sep 16, 202610001+52,736 contacts →

Indirect evidence

“Johnson Controls is a global leader in thermal management, mission-critical building systems, energy efficiency and decarbonization.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceColumbus, OH, United StatesHQ checked Sep 16, 202610001+6,538 contacts →

Indirect evidence

“In August 2016, Emerson announced the sale of the Network Power business to Platinum Equity and a group of co-investors.”

Source: RevenueBase Database · checked Sep 16, 2026
3Indirect evidenceBrussels, BelgiumHQ checked Sep 16, 20265,001-10,0005,297 contacts →

Indirect evidence

“What if you could use your talent to contribute to the great challenges of tomorrow?”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceCourbevoie, FranceHQ checked Sep 16, 202610001+5,064 contacts →

Indirect evidence

“Equans, a Bouygues group company, is a world leader in multi-technical services with offices in 20 country hubs.”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidenceVantaa, FinlandHQ checked Sep 16, 202610001+4,438 contacts →

Indirect evidence

“About Caverion Caverion is an expert for smart and sustainable built environments, enabling performance and people’s well-being.”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceGarden Grove, CA, United StatesHQ checked Sep 16, 202610001+2,439 contacts →

Indirect evidence

“As one of the nation's largest building systems experts, Southland Industries provides innovative, practical results for your engineering, construction, service, and energy needs.”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidencePasadena, CA, United StatesHQ checked Sep 16, 20265,001-10,0002,415 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 16, 2026
8Indirect evidenceBrasilia, BrazilHQ checked Sep 16, 20265,001-10,0001,810 contacts →

Indirect evidence

“A RCS é uma empresa de Engenharia especializada em oferecer serviços técnicos de missão crítica com alta tecnologia aplicada, para clientes que necessitam manter suas atividades…”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceKanata, ON, CanadaHQ checked Sep 16, 20261,001-5,0001,556 contacts →

Indirect evidence

“We build for life.”

Source: RevenueBase Database · checked Sep 16, 2026
10Strong evidenceLimerick, IrelandHQ checked Sep 16, 20261,001-5,0001,486 contacts →

Strong evidence

“Founded in 1964, Kirby is a leading Mechanical and Electrical engineering contractor with operations in Ireland, the UK, mainland Europe and South Africa.”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceNorwalk, CT, United StatesHQ checked Sep 16, 202610001+1,383 contacts →

Partial 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 16, 2026
12Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 202610001+1,330 contacts →

Indirect evidence

“Comfort Systems USA | Quality People.”

Source: RevenueBase Database · checked Sep 16, 2026
13Strong evidenceSeatac, WA, United StatesHQ checked Sep 16, 20261,001-5,0001,303 contacts →

Strong evidence

“MacDonald-Miller Facility Solutions is a full-service, design-build mechanical contractor in the Pacific Northwest.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceBrøndby, DenmarkHQ checked Sep 16, 20261,001-5,0001,298 contacts →

Indirect evidence

“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.”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 16, 20261,001-5,0001,077 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
16Indirect evidenceParsippany, NJ, United StatesHQ checked Sep 16, 20261,001-5,0001,017 contacts →

Indirect evidence

“GSH Group is a premier provider of global integrated facilities management and building engineering services.”

Source: RevenueBase Database · checked Sep 16, 2026
17Strong evidenceSt Paul, MN, United StatesHQ checked Sep 16, 20261,001-5,000982 contacts →

Strong evidence

“Harris is a leading national mechanical contractor specializing in design and engineering, construction, controls, service, manufacturing, conveyors and end-to-end building…”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceCarquefou, FranceHQ checked Sep 16, 20261,001-5,000943 contacts →

Indirect evidence

“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.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceLouisville, KY, United StatesHQ checked Sep 16, 2026501-1,000936 contacts →

Indirect evidence

“CMTA is part of Legence, a Nasdaq Listed company.”

Source: RevenueBase Database · checked Sep 16, 2026
20Strong evidenceEdmonton, AB, CanadaHQ checked Sep 16, 20261,001-5,000924 contacts →

Strong evidence

“About Silent-Aire Founded in 1994, Silent-Aire is technology driven company that designs, engineers, manufactures and services hyperscale data center solutions.”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceJessup, MD, United StatesHQ checked Sep 16, 20261,001-5,000906 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
22Partial evidenceJacksonville, FL, United StatesHQ checked Sep 16, 2026501-1,000899 contacts →

Partial 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 16, 2026
23Indirect evidenceOslo, NorwayHQ checked Sep 16, 20261,001-5,000891 contacts →

Indirect evidence

“Bravida gir bygninger liv.”

Source: RevenueBase Database · checked Sep 16, 2026
24Strong evidenceFond Du Lac, WI, United StatesHQ checked Sep 16, 20261,001-5,000849 contacts →

Strong 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 16, 2026
25Indirect evidenceNew York, United StatesHQ checked Sep 16, 2026501-1,000803 contacts →

Indirect evidence

“Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 20,944 data center mechanical contractors worldwide

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Data center mechanical contractors worldwide at a glance

As of Sep 16, 2026
29.4%Verified-email coverage
17.8Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · Sao Paulo
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
8,099
11-50
8,449
51-200
3,117
201-500
698
501-1,000
188
1,001-5,000
131
5,001-10,000
10
10001+
18

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 data center mechanical contractors, 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.
Coverage
42 countries, largest first: the United States, the United Kingdom, France, Italy, Brazil, Canada, Germany, India, the Netherlands, Spain and 32 more. Country and city lists for data center mechanical contractors are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “data center mechanical contractors”. 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 data center mechanical contractors), 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 data center mechanical contractors, and records with no verified work email.
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, 109,218 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.

Data center mechanical contractors by location

73 lists · largest first

Every Data center mechanical contractors 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 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 data center mechanical contractors, 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 data center mechanical contractors are there worldwide?

RevenueBase identified 20,944 data center mechanical contractors worldwide 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?

Johnson Controls, headquartered in Milwaukee, tops this list with the largest team on record.

Which country has the most data center mechanical contractors?

The United States leads with 7,001 companies, followed by the United Kingdom (1,526) and France (1,229). Every data center mechanical contractors list by country and city is linked on this page.

Which city has the most data center mechanical contractors?

Sao Paulo leads with 288 headquartered companies, followed by London (156) and Dubai (147).

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 109,218 verified decision-maker contacts tracked across these 20,944 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.

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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.