Company lists · Data refreshed September 2026

Top 25 Equipment preventive maintenance service providers based in the United States

Name: Equipment preventive maintenance service providers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 829 companies tracked

RevenueBase identified 829 equipment preventive maintenance service providers headquartered in the United States as of September 2026 and tracks 15,699 professional contacts across them, including 4,902 with verified work emails. Houston is the largest hub.

This list covers equipment preventive maintenance service providers headquartered in the United States, 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 20, 2026.

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 20, 2026 86% judged on-target in blind review

829Companies

15,699Contacts tracked

4,902Verified emails

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The 25 largest equipment preventive maintenance service providers based in the United States

Ranked by team size

Top 25 of 829 equipment preventive maintenance service providers based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to equipment preventive maintenance service providers: 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 20, 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 20, 2026
2	Universal Plant Services	Partial evidence	Deer Park, TX, United StatesHQ checked Sep 20, 2026	501-1,000	1,371 contacts →
	Partial evidence “Universal Plant Services (UPS) is the industry's foremost specialists in rotating and reciprocating equipment services.” Source: RevenueBase Database · checked Sep 20, 2026
3	USA Debusk	Indirect evidence	Deer Park, TX, United StatesHQ checked Sep 20, 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 20, 2026
4	CAM Industrial Solutions LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 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 20, 2026
5	Allied Reliability	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	402 contacts →
	Partial evidence “Allied Reliability provides reliability and maintenance solutions across the lifecycle of your assets to deliver required throughput at lowest operating cost.” Source: RevenueBase Database · checked Sep 20, 2026
6	Partner Industrial	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	353 contacts →
	Partial evidence “Partner Industrial is a preferred and trusted provider of specialty maintenance services to the downstream energy, power generation, and industrial markets.” Source: RevenueBase Database · checked Sep 20, 2026
7	Assetwatch	Partial evidence	Dublin, OH, United StatesHQ checked Sep 20, 2026	201-500	295 contacts →
	Partial evidence “Manufacturing facilities face common challenges including stressed equipment, unplanned downtime, and strained personnel.” Source: RevenueBase Database · checked Sep 20, 2026
8	Tech24	Partial evidence	Greenville, SC, United StatesHQ checked Sep 20, 2026	501-1,000	290 contacts →
	Partial evidence “Tech 24 is the service industry leader, providing fast, complete, multi-regional repair and preventive plan solutions for commercial refrigeration, cooking, beverage and HVAC…” Source: RevenueBase Database · checked Sep 20, 2026
9	Industrial Service Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	235 contacts →
	Indirect evidence “Industrial Service Solutions provides nationwide field, shop, and supply services for a diverse set of industrial markets with breadth and depth in application knowledge and…” Source: RevenueBase Database · checked Sep 20, 2026
10	Polaris Laboratories	Partial evidence	Indianapolis, United StatesHQ checked Sep 20, 2026	201-500	199 contacts →
	Partial evidence “POLARIS Laboratories® can help you prevent maintenance failure.” Source: RevenueBase Database · checked Sep 20, 2026
11	Sack Company	Indirect evidence	Statesboro, GA, United StatesHQ checked Sep 20, 2026	501-1,000	184 contacts →
	Indirect evidence “With offices in Statesboro, GA, Savannah, GA, Atlanta, GA, Charlotte, NC, and Lexington, SC, The Sack Company is one of the largest industrial mechanical, electrical, plumbing…” Source: RevenueBase Database · checked Sep 20, 2026
12	JAY Industrial Repair	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 20, 2026	201-500	183 contacts →
	Indirect evidence “Jay Industrial Repair is an industrial service and manufacturing business focused on quality on-time solutions in electric motor and controls sales and services, and in-field…” Source: RevenueBase Database · checked Sep 20, 2026
13	Enprotech	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 20, 2026	201-500	171 contacts →
	Partial evidence “To keep your production in motion, it takes an experienced partner dedicated to your equipment 24/7.” Source: RevenueBase Database · checked Sep 20, 2026
14	Ontario Refrigeration Service, INC	Partial evidence	Ontario, United StatesHQ checked Sep 20, 2026	51-200	165 contacts →
	Partial evidence “With 10 offices serving California, Arizona, Nevada, Utah, and Texas, we are never too far to provide service assistance whenever your equipment may require it!” Source: RevenueBase Database · checked Sep 20, 2026
15	K2 Industrial Services, INC	Indirect evidence	Highland, IN, United StatesHQ checked Sep 20, 2026	1,001-5,000	150 contacts →
	Indirect evidence “K2 Industrial Services is a national provider of industrial cleaning, tank cleaning, coatings, insulation, scaffolding and more.” Source: RevenueBase Database · checked Sep 20, 2026
16	Electric Motor & Contracting Co., INC	Indirect evidence	Chesapeake, VA, United StatesHQ checked Sep 20, 2026	201-500	131 contacts →
	Indirect evidence “Established in 1960, Electric Motor and Contracting remains one of the largest independently owned electric motor and pump repair shops in the U.S.” Source: RevenueBase Database · checked Sep 20, 2026
17	Maintenx	Partial evidence	Tampa, FL, United StatesHQ checked Sep 20, 2026	201-500	121 contacts →
	Partial evidence “Total Facility Maintenance & Repair Company.” Source: RevenueBase Database · checked Sep 20, 2026
18	First Service Networks	Partial evidence	Scottsdale, AZ, United StatesHQ checked Sep 20, 2026	501-1,000	119 contacts →
	Partial evidence “Multi-site maintenance and repair specialists First Service Networks is a multi-site facilities maintenance and repair specialist that partners with clients in industries ranging…” Source: RevenueBase Database · checked Sep 20, 2026
19	Power Services Group, INC	Partial evidence	Cape Coral, FL, United StatesHQ checked Sep 20, 2026	51-200	107 contacts →
	Partial evidence “Power Services Group (PSG) is the leading US-owned, independent provider of turnkey maintenance, repair, and overhaul solutions for steam and gas turbines.” Source: RevenueBase Database · checked Sep 20, 2026
20	Horner Industrial Group	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 20, 2026	201-500	102 contacts →
	Indirect evidence “For over half a century, Horner Industrial Group has been helping to power your business with industry leading service, quality and value by providing excellence in electrical…” Source: RevenueBase Database · checked Sep 20, 2026
21	Manufacturing Maintenance Solutions, INC MMS	Strong evidence	Pekin, IL, United StatesHQ checked Sep 20, 2026	201-500	100 contacts →
	Strong evidence “Manufacturing Maintenance Solutions, Inc (MMS) is a service organization dedicated to enhancing its customers' profitability by providing expert manufacturing equipment contract…” Source: RevenueBase Database · checked Sep 20, 2026
22	Strategic Maintenance Solutions, INC	Indirect evidence	Gorham, ME, United StatesHQ checked Sep 20, 2026	51-200	97 contacts →
	Indirect evidence “SMS provides services to industrial, manufacturing, facilities, and government organizations.” Source: RevenueBase Database · checked Sep 20, 2026
23	Conhagen Rotating Equipment Specialist	Partial evidence	Kenner, LA, United StatesHQ checked Sep 20, 2026	51-200	94 contacts →
	Partial evidence “Conhagen is a comprehensive provider of industrial rotating equipment services, including engineering, field services, shop services, manufacturing, and repairs, allowing us to…” Source: RevenueBase Database · checked Sep 20, 2026
24	Arthur G Russell Company	Indirect evidence	Bristol, CT, United StatesHQ checked Sep 20, 2026	51-200	90 contacts →
	Indirect evidence “The Arthur G Russell Company goes beyond building you an automated assembly machine.” Source: RevenueBase Database · checked Sep 20, 2026
25	HECO	Partial evidence	Kalamazoo, MI, United StatesHQ checked Sep 20, 2026	51-200	87 contacts →
	Partial evidence “HECO helps industrial plants utilize more dependable motors and equipment.” Source: RevenueBase Database · checked Sep 20, 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: equipment preventive maintenance service providers. 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 equipment preventive maintenance service providers.
Partial evidence: Its own public description names part of equipment preventive maintenance service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name equipment preventive maintenance service providers. 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 829 equipment preventive maintenance service providers based in the United States

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Equipment preventive maintenance service providers based in the United States at a glance

As of Sep 20, 2026

31.2%Verified-email coverage

18.9Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

377

11-50

281

51-200

123

201-500

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 829 companies.

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 equipment preventive maintenance service providers, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “equipment preventive maintenance service providers”. 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 equipment preventive maintenance service providers), 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 equipment preventive maintenance service providers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 4,902 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 20, 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.

Equipment preventive maintenance service providers by metro

Equipment preventive maintenance service providers in Houston30

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 equipment preventive maintenance service providers, 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 equipment preventive maintenance service providers are there based in the United States?

RevenueBase identified 829 equipment preventive maintenance service providers headquartered in the United States 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 city has the most equipment preventive maintenance service providers?

Houston leads with 30 headquartered companies, followed by New York (9) and Columbus (8).

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 4,902 verified decision-maker contacts tracked across these 829 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 20, 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.