Company lists · Data refreshed September 2026

Top 25 Equipment maintenance service providers based in the United States

Name: Equipment 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 8,064 companies tracked

RevenueBase identified 8,064 company matches for equipment maintenance service providers associated with the United States as of September 2026 and tracks 99,652 professional contacts across them, including 32,569 with verified work emails. Houston is the largest hub.

This list covers company matches for equipment maintenance service providers 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 20, 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 20, 2026 How this list was built

8,064Companies

99,652Contacts tracked

32,569Verified emails

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

Ranked by team size

Top 25 of 8,064 company matches for equipment maintenance service providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 20, 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 20, 2026 · View company records in RevenueBase
2	Universal Plant Services	Exact match	Deer Park, TX, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
3	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	10001+	1,330 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,077 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	LEE Company	Exact match	Franklin, TN, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,019 contacts →
	Exact match “Since 1944, we’ve been family-owned and family-focused, built on values that last and a mission that matters.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	GSH Group	Exact match	Parsippany, NJ, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
7	Coolsys	Exact match	Brea, CA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	750 contacts →
	Exact match “CoolSys solves the most complex challenges in refrigeration, air conditioning, heating, engineering, and energy management.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	F.E. Moran Group Of Companies	Exact match	Northbrook, IL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	564 contacts →
	Exact match “At F.E.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Climate Pros, LLC	Exact match	Glendale Heights, IL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	554 contacts →
	Exact match “At Climate Pros, LLC, we are a leading commercial refrigeration and HVAC company specializing in the design, construction, and servicing of refrigeration systems across thousands…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Deem, LLC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 20, 2026	1,001-5,000	539 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Horizon Services, LLC	Exact match	Wilmington, DE, United StatesHQ recorded Sep 20, 2026	501-1,000	448 contacts →
	Exact match “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Hoffman & Hoffman, INC	Exact match	Greensboro, NC, United StatesHQ recorded Sep 20, 2026	1,001-5,000	445 contacts →
	Exact match “Since 1947, Hoffman & Hoffman, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Pacific RIM Mechanical	Exact match	San Diego, CA, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
14	John W. Danforth Company	Exact match	Tonawanda, NY, United StatesHQ recorded Sep 20, 2026	501-1,000	415 contacts →
	Exact match “We are powered by the best people in the industry.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Allied Reliability	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
16	Aire Serv Heating And AIR Conditioning	Exact match	Waco, TX, United StatesHQ recorded Sep 20, 2026	201-500	369 contacts →
	Exact match “For consumer services visit To discover more about franchise opportunities with Aire Serv® in your area visit Established in 1992, Aire Serv® is a global franchise organization…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Partner Industrial	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
18	United Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
19	Debra-Kuempel	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
20	Brady Services	Exact match	Greensboro, NC, United StatesHQ recorded Sep 20, 2026	501-1,000	340 contacts →
	Exact match “Since 1962, Brady has been committed to delivering innovative, sustainable building solutions that drive long-term success for our customers.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Remco INC	Exact match	Mechanicsburg, PA, United StatesHQ recorded Sep 20, 2026	501-1,000	338 contacts →
	Exact match “Remco, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Mtech Mechanical	Exact match	Westminster, CO, United StatesHQ recorded Sep 20, 2026	501-1,000	335 contacts →
	Exact match “Looking for a new opportunity with a growing organization that shares your values?” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Havtech	Exact match	Columbia, MD, United StatesHQ recorded Sep 20, 2026	201-500	333 contacts →
	Exact match “Havtech delivers innovative commercial and industrial HVAC solutions across Maryland, Washington, D.C, Virginia, Pennsylvania, and West Virginia.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Entech Sales & Service, LLC	Exact match	Dallas, TX, United StatesHQ recorded Sep 20, 2026	201-500	316 contacts →
	Exact match “Entech consists of several cohesive business groups working together to provide services for commercial and industrial buildings.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	CSC	Exact match	Thonotosassa, FL, United StatesHQ recorded Sep 20, 2026	51-200	310 contacts →
	Exact match “CSC is a one stop shop for servicing HVAC, refrigeration, and cooking equipment in McDonald's restaurants.” Recorded in the RevenueBase company graph · Sep 20, 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 “equipment maintenance service providers”. 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 8,064 equipment maintenance service providers based in the United States

See the full list, filter by size, metro and specialty, and access 32,569 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 20, 2026

32.7%Verified-email coverage

12.4Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

3,504

11-50

3,052

51-200

1,092

201-500

222

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 8,064 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 “equipment maintenance service providers” 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 32,569 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 20, 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.

Equipment maintenance service providers by metro

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 “equipment maintenance service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many equipment maintenance service providers are there based in the United States?

RevenueBase identified 8,064 company matches for equipment maintenance service providers 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 equipment maintenance service providers?

Houston leads with 141 company records, followed by New York (85) and Charlotte (53).

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 32,569 professional contacts with verified work emails tracked across these 8,064 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 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 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.