Company lists · Data refreshed September 2026

Top 25 Hvac engineering staffing companies worldwide

Name: Hvac engineering staffing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 22,153 companies tracked

RevenueBase identified 22,153 hvac engineering staffing companies worldwide as of September 2026 and tracks 328,880 professional contacts across them, including 73,893 with verified work emails. The United States is the largest market and London the largest hub.

This list covers hvac engineering staffing companies 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 28, 2026. Country and city lists for hvac engineering staffing companies 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 28, 2026 86% judged on-target in blind review

22,153Companies

328,880Contacts tracked

73,893Verified emails

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The 25 largest hvac engineering staffing companies worldwide

Ranked by team size

Top 25 of 22,153 hvac engineering staffing companies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hvac engineering staffing companies: 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	Equans Belux	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	5,001-10,000	5,297 contacts →
	Indirect evidence “What if you could use your talent to contribute to the great challenges of tomorrow?” Source: RevenueBase Database · checked Sep 28, 2026
2	Tradesmen International	Indirect evidence	Macedonia, OH, United StatesHQ checked Sep 28, 2026	10001+	4,999 contacts →
	Indirect evidence “Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.” Source: RevenueBase Database · checked Sep 28, 2026
3	NES Fircroft	Strong evidence	Altrincham, United KingdomHQ checked Sep 28, 2026	1,001-5,000	2,951 contacts →
	Strong evidence “With over 90 years’ combined experience of delivering workforce solutions to the global energy industry, NES Fircroft is proud to be the world’s leading engineering staffing…” Source: RevenueBase Database · checked Sep 28, 2026
4	Samsic Emploi	Indirect evidence	Rennes, FranceHQ checked Sep 28, 2026	5,001-10,000	2,454 contacts →
	Indirect evidence “Samsic Emploi a été classée meilleure enseigne de travail temporaire par Capital, pour la 4ème année consécutive.” Source: RevenueBase Database · checked Sep 28, 2026
5	Synergie Italia	Indirect evidence	Torino, ItalyHQ checked Sep 28, 2026	501-1,000	1,748 contacts →
	Indirect evidence “L’Italia è piena di talenti: il nostro lavoro è riconoscerli!” Synergie Italia S.p.A.” Source: RevenueBase Database · checked Sep 28, 2026
6	Resourcemfg	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,639 contacts →
	Indirect evidence “ResourceMFG places temporary and direct hire employees within the total spectrum of manufacturing jobs including production, quality, maintenance, supervision, and all levels of…” Source: RevenueBase Database · checked Sep 28, 2026
7	Nesco Resource	Indirect evidence	Mayfield Heights, OH, United StatesHQ checked Sep 28, 2026	501-1,000	1,599 contacts →
	Indirect evidence “Companies need talent.” Source: RevenueBase Database · checked Sep 28, 2026
8	BHI Energy	Partial evidence	Weymouth, MA, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,427 contacts →
	Partial evidence “BHI Energy is an industry-leading provider of specialty services and staffing solutions in support of the daily operations, routine maintenance and capital investment requirements…” Source: RevenueBase Database · checked Sep 28, 2026
9	PT Dana Purna Investama DPI	Indirect evidence	Jakarta, IndonesiaHQ checked Sep 28, 2026	5,001-10,000	1,338 contacts →
	Indirect evidence “Dana Purna Investama (DPI) adalah perusahaan yang bergerak dibidang Pengelolaan Fasilitas Gedung (Facility Management Services) dan Penyedia Tenaga Kerja (Professional Resource…” Source: RevenueBase Database · checked Sep 28, 2026
10	Construction Labor Contractors	Partial evidence	Round Rock, TX, United StatesHQ checked Sep 28, 2026	501-1,000	1,234 contacts →
	Partial evidence “Let us make construction staffing work for you.” Source: RevenueBase Database · checked Sep 28, 2026
11	Outsource	Partial evidence	El Segundo, CA, United StatesHQ checked Sep 28, 2026	n/a	1,230 contacts →
	Partial evidence “Outsource is the largest staffing firm in the nation specializing in the placement of low voltage and electrical talent.” Source: RevenueBase Database · checked Sep 28, 2026
12	Aaon, INC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 28, 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 28, 2026
13	TRS Staffing Solutions	Strong evidence	Greenville, United StatesHQ checked Sep 28, 2026	201-500	1,187 contacts →
	Strong evidence “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Source: RevenueBase Database · checked Sep 28, 2026
14	Randstad Belgium	Indirect evidence	Strombeek-bever, BelgiumHQ checked Sep 28, 2026	501-1,000	1,120 contacts →
	Indirect evidence “Partner for Talent.” Source: RevenueBase Database · checked Sep 28, 2026
15	Mckenney's, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 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 28, 2026
16	In JOB	Indirect evidence	Verona, ItalyHQ checked Sep 28, 2026	1,001-5,000	1,024 contacts →
	Indirect evidence “inJob è una società specializzata nella ricerca, selezione e somministrazione di professionisti qualificati con contratti a tempo determinato e indeterminato.” Source: RevenueBase Database · checked Sep 28, 2026
17	QPS Employment Group	Partial evidence	Brookfield, WI, United StatesHQ checked Sep 28, 2026	201-500	1,019 contacts →
	Partial evidence “Founded in 1985, QPS Employment Group has grown from a two-person operation to one of the nation's leading staffing and recruiting firms, with more than 300 internal employees…” Source: RevenueBase Database · checked Sep 28, 2026
18	Staff Zone	Partial evidence	Roswell, GA, United StatesHQ checked Sep 28, 2026	10001+	1,011 contacts →
	Partial evidence “Staff Zone is a Best-in-Class® construction staffing agency specializing in meeting the daily workforce needs of the construction, light industrial, and special events industries.” Source: RevenueBase Database · checked Sep 28, 2026
19	Ventec S.A	Indirect evidence	Casablanca, MoroccoHQ checked Sep 28, 2026	1,001-5,000	959 contacts →
	Indirect evidence “La Société Ventec a été créée au Maroc en 1949 par Monsieur Albert MARQUET Président Directeur Général de Ventec en France.” Source: RevenueBase Database · checked Sep 28, 2026
20	Career Strategies	Partial evidence	Round Rock, TX, United StatesHQ checked Sep 28, 2026	n/a	955 contacts →
	Partial evidence “Career Strategies is a full service staffing firm specializing in Property Management, Healthcare and Professional Services recruitment.” Source: RevenueBase Database · checked Sep 28, 2026
21	Sraco Human Resources Company	Indirect evidence	Dammam, Saudi ArabiaHQ checked Sep 28, 2026	10001+	947 contacts →
	Indirect evidence “SRACO Human Resources Company was established in 2016 to provide the Saudi market with qualified and trained manpower for all activities, commercial, industrial, and domestic…” Source: RevenueBase Database · checked Sep 28, 2026
22	Cmta, INC	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 28, 2026	501-1,000	936 contacts →
	Indirect evidence “CMTA is part of Legence, a Nasdaq Listed company.” Source: RevenueBase Database · checked Sep 28, 2026
23	Morson Talent	Indirect evidence	Manchester, United KingdomHQ checked Sep 28, 2026	1,001-5,000	909 contacts →
	Indirect evidence “With a unique 50-year heritage of innovative recruitment, Morson Talent is a business with unrivalled sector knowledge, trusted relationships, highly skilled expertise and a…” Source: RevenueBase Database · checked Sep 28, 2026
24	Remx The Workforce Experts	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	1,001-5,000	901 contacts →
	Partial evidence “RemX is the professional staffing division of EmployBridge, a $3 billion staffing organization with more than 600 offices in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
25	WCA Brasil	Indirect evidence	Jundiaí, BrazilHQ checked Sep 28, 2026	5,001-10,000	868 contacts →
	Indirect evidence “A WCA Brasil atua na área de Prestação de Serviços há 26 anos.” Source: RevenueBase Database · checked Sep 28, 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 engineering staffing companies. 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 engineering staffing companies.
Partial evidence: Its own public description names part of hvac engineering staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac engineering staffing companies. 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 22,153 hvac engineering staffing companies worldwide

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Hvac engineering staffing companies worldwide at a glance

As of Sep 28, 2026

22.5%Verified-email coverage

14.8Average contacts per company

11-50Median size (employees)

2.1%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

10,185

11-50

7,393

51-200

3,043

201-500

847

501-1,000

293

1,001-5,000

200

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 engineering staffing companies, 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: Every country. Country and city lists for hvac engineering staffing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “hvac engineering staffing companies”. 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 engineering staffing companies), 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 engineering staffing companies, 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, 73,893 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 28, 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 engineering staffing companies by location

95 lists · largest first

Every Hvac engineering staffing companies 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 hvac engineering staffing companies, 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 engineering staffing companies are there worldwide?

RevenueBase identified 22,153 hvac engineering staffing companies 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?

Equans Belux, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most hvac engineering staffing companies?

The United States leads with 6,833 companies, followed by the United Kingdom (2,573) and India (1,010). Every hvac engineering staffing companies list by country and city is linked on this page.

Which city has the most hvac engineering staffing companies?

London leads with 459 headquartered companies, followed by Houston (177) and New York (135).

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 73,893 verified decision-maker contacts tracked across these 22,153 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 28, 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.