Company lists · Data refreshed September 2026

Top 25 Preventive maintenance contractors based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,920 companies tracked

RevenueBase identified 1,920 company matches for preventive maintenance contractors associated with the United States as of September 2026 and tracks 37,572 professional contacts across them, including 11,272 with verified work emails. Houston is the largest hub.

This list covers company matches for preventive maintenance contractors associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

1,920Companies

37,572Contacts tracked

11,272Verified emails

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The 25 largest preventive maintenance contractors based in the United States

Ranked by team size

Top 25 of 1,920 company matches for preventive maintenance contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Advanced Technology Services ATS	Exact match	Peoria, IL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,216 contacts →
	Exact match “Advanced Technology Services, Inc.(ATS) is a single source for industrial maintenance, technology and parts, offering a complete solution for support, training, monitoring and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Universal Plant Services	Exact match	Deer Park, TX, United StatesHQ recorded Sep 17, 2026	501-1,000	1,371 contacts →
	Exact match “Universal Plant Services (UPS) is the industry's foremost specialists in rotating and reciprocating equipment services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	GSH Group	Exact match	Parsippany, NJ, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,017 contacts →
	Exact match “GSH Group is a premier provider of global integrated facilities management and building engineering services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Hydrochempsc	Exact match	Deer Park, TX, United StatesHQ recorded Sep 17, 2026	5,001-10,000	718 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Vixxo Facility Solutions	Exact match	Scottsdale, AZ, United StatesHQ recorded Sep 17, 2026	501-1,000	679 contacts →
	Exact match “At Vixxo Facility Solutions, we pride ourselves on delivering unparalleled expertise to create outstanding customer experiences.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	IH Services, INC	Exact match	Sebastian, FL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	642 contacts →
	Exact match “Where Facility Excellence Meets Defense Standards Ready • Secure • Lean We serve operators who cannot afford a facility failure: defense primes, secure federal installations…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	USA Debusk	Exact match	Deer Park, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	640 contacts →
	Exact match “USA DeBusk serves the industrial infrastructure sector through a diverse and complementary suite of high-value traditional and specialty services for turnarounds, routine…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Pacific RIM Mechanical	Exact match	San Diego, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	441 contacts →
	Exact match “At Pacific Rim Mechanical, we deliver comprehensive mechanical contracting and facility services across Southern California.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	CAM Industrial Solutions LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	5,001-10,000	434 contacts →
	Exact match “With decades of refinery, petrochemical, fertilizer and power plant experience, CAM Industrial Solutions has become the standard in heavy industrial maintenance, turnaround and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Allied Reliability	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	201-500	402 contacts →
	Exact match “Allied Reliability provides reliability and maintenance solutions across the lifecycle of your assets to deliver required throughput at lowest operating cost.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Partner Industrial	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	353 contacts →
	Exact match “Partner Industrial is a preferred and trusted provider of specialty maintenance services to the downstream energy, power generation, and industrial markets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	United Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Sep 17, 2026	201-500	346 contacts →
	Exact match “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Debra-Kuempel	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 17, 2026	1,001-5,000	346 contacts →
	Exact match “With more than 70 years of experience, DeBra-Kuempel is a leading provider of mechanical, electrical, and plumbing services to Cincinnati, Dayton, Columbus, Evansville, Lexington…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Remco INC	Exact match	Mechanicsburg, PA, United StatesHQ recorded Sep 17, 2026	501-1,000	338 contacts →
	Exact match “Remco, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Tech24	Exact match	Greenville, SC, United StatesHQ recorded Sep 17, 2026	501-1,000	290 contacts →
	Exact match “Tech 24 is the service industry leader, providing fast, complete, multi-regional repair and preventive plan solutions for commercial refrigeration, cooking, beverage and HVAC…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	GEM Incorporated	Exact match	Walbridge, OH, United StatesHQ recorded Sep 17, 2026	1,001-5,000	270 contacts →
	Exact match “Contractor for Life At GEM Inc, we’re experienced problem solvers with the insight, integrity and resources to see you through your toughest challenges.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	BFC Solutions	Exact match	Nashville, TN, United StatesHQ recorded Sep 17, 2026	501-1,000	241 contacts →
	Exact match “BFC Solutions is the leader in essential HVAC services for commercial multi-site facilities and chains nationwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Holaday-Parks, INC	Exact match	Tukwila, WA, United StatesHQ recorded Sep 17, 2026	201-500	218 contacts →
	Exact match “As one of the largest full service mechanical contractors headquartered in the Pacific Northwest, Holaday Parks has grown well beyond Seattle.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Pueblo Mechanical & Controls	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 17, 2026	501-1,000	214 contacts →
	Exact match “Pueblo was founded in Arizona to achieve sustained and profitable growth by providing services that consistently satisfy the needs and expectations of its customers.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	The DM Burr Group	Exact match	Flint, MI, United StatesHQ recorded Sep 17, 2026	1,001-5,000	211 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Velociti Services	Exact match	Atlanta, GA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	208 contacts →
	Exact match “Our Mission: To be the most respected facilities services company in the world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	AIR Force ONE	Exact match	Dublin, OH, United StatesHQ recorded Sep 17, 2026	201-500	201 contacts →
	Exact match “Our approach puts you and your needs first.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Star Service INC	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 17, 2026	201-500	201 contacts →
	Exact match “Our commitment to the commercial HVAC industry has remained unchanged since we began in 1952.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Emcor Services NEW England Mechanical	Exact match	Windsor, CT, United StatesHQ recorded Sep 17, 2026	201-500	195 contacts →
	Exact match “EMCOR Services New England Mechanical Services (NEMSI) offers a full range of mechanical, electrical, plumbing, sheetmetal, building automation, and facilities services that…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Haynes Mechanical Systems	Exact match	Greenwood Village, CO, United StatesHQ recorded Sep 17, 2026	201-500	190 contacts →
	Exact match “Haynes Mechanical Systems has been keeping commercial buildings running strong since 1968.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “preventive maintenance contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,920 preventive maintenance contractors based in the United States

See the full list, filter by size, metro and specialty, and access 11,272 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Preventive maintenance contractors based in the United States at a glance

As of Sep 17, 2026

30.0%Verified-email coverage

19.6Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

712

11-50

683

51-200

372

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 1,920 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “preventive maintenance contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 11,272 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “preventive maintenance contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many preventive maintenance contractors are there based in the United States?

RevenueBase identified 1,920 company matches for preventive maintenance contractors associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Advanced Technology Services ATS tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most preventive maintenance contractors?

Houston leads with 44 company records, followed by New York (20) and Miami (17).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 11,272 professional contacts with verified work emails tracked across these 1,920 companies; direct dials are available where recorded.

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 SmartSearch, 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.