Company lists · Data refreshed September 2026

Top 25 Equipment inspection and maintenance services based in the United States

Name: Equipment inspection and maintenance services 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 1,103 companies tracked

RevenueBase identified 1,103 equipment inspection and maintenance services headquartered in the United States as of September 2026 and tracks 25,027 professional contacts across them, including 7,468 with verified work emails. Houston is the largest hub.

This list covers equipment inspection and maintenance services 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

1,103Companies

25,027Contacts tracked

7,468Verified emails

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The 25 largest equipment inspection and maintenance services based in the United States

Ranked by team size

Top 25 of 1,103 equipment inspection and maintenance services 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 inspection and maintenance services: 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	Brown & Root Industrial Services, LLC	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 20, 2026	5,001-10,000	1,940 contacts →
	Partial evidence “Brown & Root Industrial Services offers the full range of industrial services – engineering, construction, maintenance, turnaround, and specialty (painting, scaffolding…” Source: RevenueBase Database · checked Sep 20, 2026
3	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
4	Hydrochempsc	Partial evidence	Deer Park, TX, United StatesHQ checked Sep 20, 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 20, 2026
5	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
6	Loenbro	Indirect evidence	Westminster, CO, United StatesHQ checked Sep 20, 2026	1,001-5,000	504 contacts →
	Indirect evidence “Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S.” Source: RevenueBase Database · checked Sep 20, 2026
7	Evergreen North America Industrial Services	Indirect evidence	La Porte, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	468 contacts →
	Indirect evidence “Evergreen North America Industrial Services offers a comprehensive range of Industrial Services for oil refineries, petrochemical plants, power generation plants, manufacturing…” Source: RevenueBase Database · checked Sep 20, 2026
8	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
9	Hoist & Crane Service Group	Strong evidence	New Orleans, LA, United StatesHQ checked Sep 20, 2026	501-1,000	388 contacts →
	Strong evidence “Hoist & Crane Service Group is a national leader in comprehensive inspection and maintenance services for overhead lifting equipment and industrial elevators.” Source: RevenueBase Database · checked Sep 20, 2026
10	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
11	Tech24	Indirect evidence	Greenville, SC, United StatesHQ checked Sep 20, 2026	501-1,000	290 contacts →
	Indirect 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
12	Rotating Machinery Services, INC	Partial evidence	Bethlehem, PA, United StatesHQ checked Sep 20, 2026	201-500	251 contacts →
	Partial evidence “Rotating Machinery Services (RMS)\| Engineering Reliability in Rotating Equipment Since 1998, Rotating Machinery Services (RMS) has redefined the aftermarket for compressors…” Source: RevenueBase Database · checked Sep 20, 2026
13	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
14	Techcorr Usa, LLC	Partial evidence	Pasadena, TX, United StatesHQ checked Sep 20, 2026	501-1,000	226 contacts →
	Partial evidence “The TechCorr name is synonymous with safe, quality inspection services.” Source: RevenueBase Database · checked Sep 20, 2026
15	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
16	TIMEC	Indirect evidence	Pasadena, TX, United StatesHQ checked Sep 20, 2026	501-1,000	198 contacts →
	Indirect evidence “TIMEC, founded in 1971, has over 50 years of experience delivering best-in-class safety, quality, and efficiency.” Source: RevenueBase Database · checked Sep 20, 2026
17	Atlas Machine & Supply, INC	Partial evidence	Louisville, KY, United StatesHQ checked Sep 20, 2026	201-500	185 contacts →
	Partial evidence “Atlas designs, repairs, and remanufactures complex equipment and components for industry and municipalities.” Source: RevenueBase Database · checked Sep 20, 2026
18	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
19	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
20	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
21	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
22	Aims Companies	Partial evidence	Scottsdale, AZ, United StatesHQ checked Sep 20, 2026	501-1,000	154 contacts →
	Partial evidence “Founded in AIMS Companies (AIMS) has been providing turnkey inspection and cleaning services to the industrial, power utility, construction and municipal markets for over 25 years…” Source: RevenueBase Database · checked Sep 20, 2026
23	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
24	Qualspec	Partial evidence	Deer Park, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	149 contacts →
	Partial evidence “QualSpec is a leading industrial inspection firm headquartered in Houston, Texas.” Source: RevenueBase Database · checked Sep 20, 2026
25	Borets US INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	149 contacts →
	Partial evidence “Borets is one of the leading manufacturers of oilfield equipment in the world offering a complete array of oil recovery products and services in the operation, repair, and…” 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 inspection and maintenance services. 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 inspection and maintenance services.
Partial evidence: Its own public description names part of equipment inspection and maintenance services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name equipment inspection and maintenance services. 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 1,103 equipment inspection and maintenance services based in the United States

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Equipment inspection and maintenance services based in the United States at a glance

As of Sep 20, 2026

29.8%Verified-email coverage

22.7Average contacts per company

11-50Median size (employees)

4.2%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

457

11-50

370

51-200

189

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 1,103 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 inspection and maintenance services, 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 inspection and maintenance services”. 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 inspection and maintenance services), 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 inspection and maintenance services, 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, 7,468 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 inspection and maintenance services by metro

Equipment inspection and maintenance services in Houston46

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 inspection and maintenance services, 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 inspection and maintenance services are there based in the United States?

RevenueBase identified 1,103 equipment inspection and maintenance services 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 inspection and maintenance services?

Houston leads with 46 headquartered companies, followed by Miami (14) and New York (11).

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 7,468 verified decision-maker contacts tracked across these 1,103 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.