Company lists · Data refreshed September 2026

Top 25 Plant maintenance staffing based in the United States

Name: Plant maintenance staffing based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 463 companies tracked

RevenueBase identified 463 plant maintenance staffing headquartered in the United States as of September 2026 and tracks 30,408 professional contacts across them, including 4,542 with verified work emails and 10,785 with mobile numbers. Houston is the largest hub.

This list covers plant maintenance staffing 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 5, 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 5, 2026 86% judged on-target in blind review

463Companies

30,408Contacts tracked

4,542Verified emails

10,785Mobile numbers

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The 25 largest plant maintenance staffing based in the United States

Ranked by team size

Top 25 of 463 plant maintenance staffing based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to plant maintenance staffing: 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	Aerotek	Indirect evidence	Hanover, MD, United StatesHQ checked Sep 5, 2026	n/a	18,268 contacts →
	Indirect evidence “From economic headwinds to talent complexities, the challenges facing North American industry are real.” Source: RevenueBase Database · checked Sep 5, 2026
2	Advanced Technology Services ATS	Partial evidence	Peoria, IL, United StatesHQ checked Sep 5, 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 5, 2026
3	Automation Personnel Services, INC	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 5, 2026	10001+	624 contacts →
	Indirect evidence “Automation Personnel Services was founded in Birmingham, AL almost 30 years ago and has expanded coast to coast with 40 Branch offices in eleven states.” Source: RevenueBase Database · checked Sep 5, 2026
4	Volt Technical Resources	Indirect evidence	Orange, CA, United StatesHQ checked Sep 5, 2026	5,001-10,000	584 contacts →
	Indirect evidence “A Six Sigma Company ~61 years in the industry ~Nationwide 4 million+ candidate database ~Fortune Company ~Extensive E-Recruiting capabilities ~Reference and Employment check…” Source: RevenueBase Database · checked Sep 5, 2026
5	Deem, LLC	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 5, 2026	1,001-5,000	539 contacts →
	Indirect evidence “DEEM, LLC is a mechanical and electrical company centrally located in Fishers, Indiana with satellite offices throughout the Midwest down to the southeastern United States.” Source: RevenueBase Database · checked Sep 5, 2026
6	Launch Technical Workforce Solutions	Indirect evidence	Oak Brook, IL, United StatesHQ checked Sep 5, 2026	1,001-5,000	488 contacts →
	Indirect evidence “LAUNCH Technical Workforce Solutions partners with aviation, transportation, and industrial organizations to solve complex workforce challenges.” Source: RevenueBase Database · checked Sep 5, 2026
7	Laborworks, INC	Partial evidence	Gig Harbor, WA, United StatesHQ checked Sep 5, 2026	51-200	376 contacts →
	Partial evidence “LaborWorks is a national, privately held industrial staffing specialty company based in Gig Harbor, Washington.” Source: RevenueBase Database · checked Sep 5, 2026
8	Tech24	Indirect evidence	Greenville, SC, United StatesHQ checked Sep 5, 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 5, 2026
9	On-Board Companies	Partial evidence	East Windsor, NJ, United StatesHQ checked Sep 5, 2026	1,001-5,000	288 contacts →
	Partial evidence “On-Board is a thriving privately held family of companies with services including: Consulting, Professional Engineering, Industrial Maintenance and Facility Management, Contracted…” Source: RevenueBase Database · checked Sep 5, 2026
10	Defender Services, INC	Partial evidence	Hopkins, SC, United StatesHQ checked Sep 5, 2026	1,001-5,000	254 contacts →
	Partial evidence “Defender Services is a national provider of facility maintenance services: Ranging from Janitorial, Industrial Housekeeping, Security, Landscaping, Grounds Maintenance…” Source: RevenueBase Database · checked Sep 5, 2026
11	The DM Burr Group	Indirect evidence	Flint, MI, United StatesHQ checked Sep 5, 2026	1,001-5,000	211 contacts →
	Indirect evidence “The DM Burr Group is a multifaceted company that has many divisions that are complementary to one another giving our customers the easiest way possible to bundle services together…” Source: RevenueBase Database · checked Sep 5, 2026
12	Rinvio	Indirect evidence	Huntington Beach, CA, United StatesHQ checked Sep 5, 2026	51-200	189 contacts →
	Indirect evidence “Rinvio helps contractors and project-driven companies say yes to bigger work.” Source: RevenueBase Database · checked Sep 5, 2026
13	Sack Company	Indirect evidence	Statesboro, GA, United StatesHQ checked Sep 5, 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 5, 2026
14	Intermountain Staffing	Partial evidence	North Salt Lake, UT, United StatesHQ checked Sep 5, 2026	51-200	177 contacts →
	Partial evidence “Intermountain Staffing, one of the largest staffing companies in the Intermountain West, has been helping put people and jobs together since 1969.” Source: RevenueBase Database · checked Sep 5, 2026
15	Madden Industrial Craftsmen, INC	Partial evidence	Beaverton, OR, United StatesHQ checked Sep 5, 2026	51-200	169 contacts →
	Partial evidence “Madden Industrial Craftsmen strives to be the leading industrial staffing company in the Northwest and beyond by developing lifelong customer relationships and recognizing and…” Source: RevenueBase Database · checked Sep 5, 2026
16	Nwestco LLC	Indirect evidence	Denver, MT, United StatesHQ checked Sep 5, 2026	51-200	105 contacts →
	Indirect evidence “Nwestco LLC (Nwestco) is comprised of a variety, yet related, business units ranging from petroleum, car wash, electrical, industrial/commercial, QSR (restaurant POS)…” Source: RevenueBase Database · checked Sep 5, 2026
17	PDQ Staffing, INC	Partial evidence	Carrollton, TX, United StatesHQ checked Sep 5, 2026	51-200	96 contacts →
	Partial evidence “Staffing with People Driven Qualities!” Source: RevenueBase Database · checked Sep 5, 2026
18	Conhagen Rotating Equipment Specialist	Indirect evidence	Kenner, LA, United StatesHQ checked Sep 5, 2026	51-200	94 contacts →
	Indirect 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 5, 2026
19	Express Employment Indy South	Indirect evidence	Greenwood, IN, United StatesHQ checked Sep 5, 2026	11-50	90 contacts →
	Indirect evidence “Express Indy South works alongside the Express Columbus location in Columbus, IN to service seven counties in the south-central Indiana area- Marion, Johnson, Shelby, Bartholomew…” Source: RevenueBase Database · checked Sep 5, 2026
20	Caliper, INC	Partial evidence	Virginia Beach, United StatesHQ checked Sep 5, 2026	1,001-5,000	88 contacts →
	Partial evidence “Emergency & Outage Support Engineering Services Fixed-Price Projects Maintenance Repair Services Onsite Vendor Management Services Staff Augmentation/Temporary Labor Payrolling…” Source: RevenueBase Database · checked Sep 5, 2026
21	HECO	Partial evidence	Kalamazoo, MI, United StatesHQ checked Sep 5, 2026	51-200	87 contacts →
	Partial evidence “HECO helps industrial plants utilize more dependable motors and equipment.” Source: RevenueBase Database · checked Sep 5, 2026
22	Blackrock Resources LLC	Partial evidence	Canonsburg, PA, United StatesHQ checked Sep 5, 2026	51-200	79 contacts →
	Partial evidence “BlackRock Resources LLC is a leading global provider of Staffing, Recruiting and Engineering services to the Energy, Power, Data Center, Manufacturing, Construction, Engineering…” Source: RevenueBase Database · checked Sep 5, 2026
23	ZLA Solutions	Indirect evidence	Rainbow City, AL, United StatesHQ checked Sep 5, 2026	201-500	78 contacts →
	Indirect evidence “Founded in 2015, ZLA Solutions provides a wide array of expertise to the Automotive & Manufacturing Industries.” Source: RevenueBase Database · checked Sep 5, 2026
24	Marshall Industrial Technologies INC	Strong evidence	Trenton, United StatesHQ checked Sep 5, 2026	51-200	74 contacts →
	Strong evidence “Marshall Industrial Technologies offers a single source for your plant maintenance, emergency repairs and capital project installations.” Source: RevenueBase Database · checked Sep 5, 2026
25	Hi-Speed Industrial Service	Indirect evidence	Millington, TN, United StatesHQ checked Sep 5, 2026	51-200	67 contacts →
	Indirect evidence “Keeping your facility up to speed, every day since 1946.” Source: RevenueBase Database · checked Sep 5, 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: plant maintenance staffing. 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 plant maintenance staffing.
Partial evidence: Its own public description names part of plant maintenance staffing, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name plant maintenance staffing. 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 463 plant maintenance staffing based in the United States

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Plant maintenance staffing based in the United States at a glance

As of Sep 5, 2026

14.9%Verified-email coverage

35.5%Mobile-number coverage

65.7Average contacts per company

11-50Median size (employees)

3.7%Largest-city concentration · Houston

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

158

11-50

125

51-200

115

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

4,1750–30

32231–60

261–90

290–180

41180+

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 plant maintenance staffing, 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 “plant maintenance staffing”. 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 plant maintenance staffing), 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 plant maintenance staffing, 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, 4,542 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 5, 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.

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 plant maintenance staffing, 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 plant maintenance staffing are there based in the United States?

RevenueBase identified 463 plant maintenance staffing 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?

Aerotek, headquartered in Hanover, tops this list with the largest team on record.

Which city has the most plant maintenance staffing?

Houston leads with 17 headquartered companies, followed by Atlanta (8) and Dallas (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 4,542 verified decision-maker contacts tracked across these 463 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 5, 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.