Company lists · Data refreshed September 2026

Top 25 Preventive maintenance contractors worldwide

Name: Preventive maintenance contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 6,980 companies tracked

RevenueBase identified 6,980 preventive maintenance contractors worldwide as of September 2026 and tracks 99,190 professional contacts across them, including 22,132 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 preventive maintenance 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 17, 2026. Country and city lists for preventive maintenance 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 17, 2026 86% judged on-target in blind review

6,980Companies

99,190Contacts tracked

22,132Verified emails

0Mobile numbers

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The 25 largest preventive maintenance contractors worldwide

Ranked by team size

Top 25 of 6,980 preventive maintenance contractors worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to preventive maintenance 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Advanced Technology Services ATS	Partial evidence	Peoria, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,216 contacts →
	Partial evidence “Advanced Technology Services, Inc.(ATS) is a single source for industrial maintenance, technology and parts, offering a complete solution for support, training, monitoring and…” Source: RevenueBase Database · checked Sep 17, 2026
2	ELFE	Indirect evidence	Macaé, BrazilHQ checked Sep 17, 2026	1,001-5,000	1,898 contacts →
	Indirect evidence “No mercado há mais de duas décadas, a Axia é uma empresa nacional com atuação em operação e manutenção industrial.” Source: RevenueBase Database · checked Sep 17, 2026
3	Ainsworth INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 17, 2026	1,001-5,000	1,405 contacts →
	Indirect evidence “Our customers depend on their buildings, industrial assets, processes, and energy management, to help them meet competitive challenges.” Source: RevenueBase Database · checked Sep 17, 2026
4	Universal Plant Services	Indirect evidence	Deer Park, TX, United StatesHQ checked Sep 17, 2026	501-1,000	1,371 contacts →
	Indirect evidence “Universal Plant Services (UPS) is the industry's foremost specialists in rotating and reciprocating equipment services.” Source: RevenueBase Database · checked Sep 17, 2026
5	Irmãos Passaúra S A	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	1,001-5,000	1,075 contacts →
	Indirect evidence “Empresa de Montagem e Manutenção Industrial” Source: RevenueBase Database · checked Sep 17, 2026
6	GSH Group	Indirect evidence	Parsippany, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,017 contacts →
	Indirect evidence “GSH Group is a premier provider of global integrated facilities management and building engineering services.” Source: RevenueBase Database · checked Sep 17, 2026
7	Quant Service	Partial evidence	Stockholm, SwedenHQ checked Sep 17, 2026	1,001-5,000	913 contacts →
	Partial evidence “We are Quant – your maintenance partner.” Source: RevenueBase Database · checked Sep 17, 2026
8	FMCO	Indirect evidence	Dammam, Saudi ArabiaHQ checked Sep 17, 2026	1,001-5,000	834 contacts →
	Indirect evidence “FMCO is a multidisciplinary company that deals with the coordination of works between buildings, individuals, infrastructure, energy, water and drainage services in order to…” Source: RevenueBase Database · checked Sep 17, 2026
9	Hydrochempsc	Partial evidence	Deer Park, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	718 contacts →
	Partial evidence “HPC Industrial, a Clean Harbors business, is the leading provider of specialty maintenance services and technology solutions to the critical energy infrastructure in the United…” Source: RevenueBase Database · checked Sep 17, 2026
10	Universal Voltas LLC	Indirect evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 17, 2026	1,001-5,000	681 contacts →
	Indirect evidence “Universal Voltas is a leader in Electromechanical Projects and Facility Management Services, providing state of the art solutions to its clients.” Source: RevenueBase Database · checked Sep 17, 2026
11	Vixxo Facility Solutions	Indirect evidence	Scottsdale, AZ, United StatesHQ checked Sep 17, 2026	501-1,000	679 contacts →
	Indirect evidence “At Vixxo Facility Solutions, we pride ourselves on delivering unparalleled expertise to create outstanding customer experiences.” Source: RevenueBase Database · checked Sep 17, 2026
12	AXIS	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	501-1,000	643 contacts →
	Partial evidence “We partner with our clients to navigate the complexities of property maintenance, providing agile, responsive, and reliable solutions that empower you to focus on your core…” Source: RevenueBase Database · checked Sep 17, 2026
13	IH Services, INC	Indirect evidence	Sebastian, FL, United StatesHQ checked Sep 17, 2026	1,001-5,000	642 contacts →
	Indirect evidence “Where Facility Excellence Meets Defense Standards Ready • Secure • Lean We serve operators who cannot afford a facility failure: defense primes, secure federal installations…” Source: RevenueBase Database · checked Sep 17, 2026
14	USA Debusk	Indirect evidence	Deer Park, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	640 contacts →
	Indirect evidence “USA DeBusk serves the industrial infrastructure sector through a diverse and complementary suite of high-value traditional and specialty services for turnarounds, routine…” Source: RevenueBase Database · checked Sep 17, 2026
15	Temon Serviços	Indirect evidence	São Paulo, BrazilHQ checked Sep 17, 2026	1,001-5,000	628 contacts →
	Indirect evidence “A Temon Serviços é a empresa líder na engenharia de manutenção e operação de sistemas prediais de alta complexidade.” Source: RevenueBase Database · checked Sep 17, 2026
16	Scania Industrial Maintenance AB	Partial evidence	Södertälje, SwedenHQ checked Sep 17, 2026	501-1,000	627 contacts →
	Partial evidence “Scania Industrial Maintenance support Scania in Sweden with technical services.” Source: RevenueBase Database · checked Sep 17, 2026
17	Unica Building Services	Indirect evidence	Landelijk, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	548 contacts →
	Indirect evidence “Unica Building Services manages and maintains all building-related installations to ensure a comfortable, sustainable, safe and healthy environment.” Source: RevenueBase Database · checked Sep 17, 2026
18	NCH Europe	Indirect evidence	Wolverhampton, United KingdomHQ checked Sep 17, 2026	10001+	453 contacts →
	Indirect evidence “Industrial solutions since 1919 At NCH, we don’t just sell products-we deliver solutions that keep businesses moving.” Source: RevenueBase Database · checked Sep 17, 2026
19	AL Shirawi Facilities Management	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 17, 2026	1,001-5,000	442 contacts →
	Indirect evidence “Al Shirawi’s progression in becoming a fully fledged Facilities Management Service Provider has been achieved over 35 years of strategic planning and development.” Source: RevenueBase Database · checked Sep 17, 2026
20	City Facilities Management Australia	Indirect evidence	Mulgrave, AustraliaHQ checked Sep 17, 2026	1,001-5,000	441 contacts →
	Indirect evidence “Founded in 1985 in Glasgow, Scotland, City Facilities Management (City) is one of the world’s largest privately-owned facilities management companies.” Source: RevenueBase Database · checked Sep 17, 2026
21	Pacific RIM Mechanical	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	501-1,000	441 contacts →
	Indirect evidence “At Pacific Rim Mechanical, we deliver comprehensive mechanical contracting and facility services across Southern California.” Source: RevenueBase Database · checked Sep 17, 2026
22	CAM Industrial Solutions LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	434 contacts →
	Partial evidence “With decades of refinery, petrochemical, fertilizer and power plant experience, CAM Industrial Solutions has become the standard in heavy industrial maintenance, turnaround and…” Source: RevenueBase Database · checked Sep 17, 2026
23	MEISA	Indirect evidence	Argamasilla De Calatrava, SpainHQ checked Sep 17, 2026	1,001-5,000	428 contacts →
	Indirect evidence “MEISA (Proyectos y Mantenimientos Mecánicos, Eléctricos y de Instrumentación), se constituyó en 1998, viendo las oportunidades de mercado de negocio y demanda creciente de los…” Source: RevenueBase Database · checked Sep 17, 2026
24	Itayá Engenharia, Manutenção Industrial E Construções	Indirect evidence	Sorocaba, BrazilHQ checked Sep 17, 2026	501-1,000	422 contacts →
	Indirect evidence “Fundada em 1992, a ITAYÁ vem construindo uma imagem de excelência, idoneidade e competência no segmento de Manutenção e Montagem Industrial.” Source: RevenueBase Database · checked Sep 17, 2026
25	Fives Maintenance	Partial evidence	Montévrain, FranceHQ checked Sep 17, 2026	501-1,000	416 contacts →
	Partial evidence “Spécialiste de la maintenance industrielle depuis plus de vingt ans, Fives intervient dans le cadre de contrats à obligation de résultats pour assurer la maintenance préventive…” Source: RevenueBase Database · checked Sep 17, 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: preventive maintenance contractors. 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 preventive maintenance contractors.
Partial evidence: Its own public description names part of preventive maintenance contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name preventive maintenance contractors. 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 6,980 preventive maintenance contractors worldwide

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Preventive maintenance contractors worldwide at a glance

As of Sep 17, 2026

22.3%Verified-email coverage

14.2Average contacts per company

11-50Median size (employees)

2.7%Largest-city concentration · Sao Paulo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

2,926

11-50

2,676

51-200

955

201-500

227

501-1,000

1,001-5,000

5,001-10,000

10001+

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 preventive maintenance 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: 22 countries, largest first: the United States, Brazil, the United Kingdom, Italy, France, Spain, Canada, Mexico, the United Arab Emirates, Australia and 12 more. Country and city lists for preventive maintenance contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “preventive maintenance 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 preventive maintenance 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 preventive maintenance 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, 22,132 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 17, 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.

Preventive maintenance contractors by location

23 lists · largest first

Every Preventive maintenance contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Preventive maintenance contractors based in Sao Paulo, Brazil187

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 preventive maintenance 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 preventive maintenance contractors are there worldwide?

RevenueBase identified 6,980 preventive maintenance 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?

Advanced Technology Services ATS, headquartered in Peoria, tops this list with the largest team on record.

Which country has the most preventive maintenance contractors?

The United States leads with 1,920 companies, followed by Brazil (1,174) and the United Kingdom (627). Every preventive maintenance contractors list by country and city is linked on this page.

Which city has the most preventive maintenance contractors?

Sao Paulo leads with 187 headquartered companies, followed by Dubai (147) and London (73).

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 22,132 verified decision-maker contacts tracked across these 6,980 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 17, 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.