Company lists · Data refreshed October 2026

Top 25 Building systems maintenance companies based in the United States

Name: Building systems maintenance companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 7,272 companies tracked

RevenueBase identified 7,272 company matches for building systems maintenance companies associated with the United States as of October 2026 and tracks 139,767 professional contacts across them, including 45,563 with verified work emails. Houston is the largest hub.

This list covers company matches for building systems maintenance companies 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 October 9, 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 Oct 9, 2026 How this list was built

7,272Companies

139,767Contacts tracked

45,563Verified emails

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The 25 largest building systems maintenance companies based in the United States

Ranked by team size

Top 25 of 7,272 company matches for building systems maintenance companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Oct 9, 2026	5,001-10,000	2,573 contacts →
	Exact match “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	GCA Services Group	Exact match	NY, United StatesHQ recorded Oct 9, 2026	10001+	2,494 contacts →
	Exact match “ABM (NYSE: ABM) is a Fortune 500 company and leading provider of facility solutions with offices throughout the United States and various international locations.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	Tdindustries, INC	Exact match	Dallas, TX, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,925 contacts →
	Exact match “TDIndustries delivers a comprehensive approach to Facility Services and Mechanical Construction.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Oct 9, 2026	10001+	1,443 contacts →
	Exact match “A Fortune 500® company and a member of the S&P 500, EMCOR Group, Inc.(NYSE: EME) is a leader in mechanical and electrical construction, industrial and energy infrastructure, and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	10001+	1,354 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	City Wide Facility Solutions	Exact match	Lenexa, KS, United StatesHQ recorded Oct 9, 2026	n/a	1,215 contacts →
	Exact match “Founded in 1961, City Wide has become synonymous with building maintenance in its home Kansas City market and now has over 100 franchise locations in the United States and Canada.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,088 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	LEE Company	Exact match	Franklin, TN, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,049 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 · Oct 9, 2026 · View company records in RevenueBase
9	Cmta, INC	Exact match	Louisville, KY, United StatesHQ recorded Oct 9, 2026	501-1,000	1,016 contacts →
	Exact match “CMTA is part of Legence, a Nasdaq Listed company.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	GSH Group	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 9, 2026	1,001-5,000	998 contacts →
	Exact match “GSH Group is a premier provider of global integrated facilities management and building engineering services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	AHERN	Exact match	Fond Du Lac, WI, United StatesHQ recorded Oct 9, 2026	1,001-5,000	884 contacts →
	Exact match “Ahern is a mechanical and fire protection contractor specializing in HVAC, Plumbing, Building Controls, Sprinkler, Extinguisher & Alarm and Fabrication for construction and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Archkey Solutions	Exact match	St. Louis, MO, United StatesHQ recorded Oct 9, 2026	1,001-5,000	880 contacts →
	Exact match “ArchKey, one of the largest privately held specialty trade installation and facilities services companies in the United States, is a leader in designing, building, and maintaining…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Marsden Services	Exact match	St. Paul, MN, United StatesHQ recorded Oct 9, 2026	5,001-10,000	800 contacts →
	Exact match “Established in 1952 by Skip Marsden, Marsden Services is one of the largest privately-held facility services organizations in the United States.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Flagship Facility Services, INC	Exact match	San Jose, CA, United StatesHQ recorded Oct 9, 2026	5,001-10,000	798 contacts →
	Exact match “Flagship Facility Services is a facilities maintenance company headquartered in Southlake, Texas.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	Limbach	Exact match	Tampa, FL, United StatesHQ recorded Oct 9, 2026	1,001-5,000	776 contacts →
	Exact match “Limbach is a leading building solutions firm delivering mission critical infrastructure that supports life’s most important moments.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Baker Group	Exact match	Ankeny, IA, United StatesHQ recorded Oct 9, 2026	1,001-5,000	710 contacts →
	Exact match “Established in 1963, Baker Group is Iowa’s premier full-service specialty contractor-serving commercial, industrial, institutional, and mission-critical markets across the country.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Vixxo Facility Solutions	Exact match	Scottsdale, AZ, United StatesHQ recorded Oct 9, 2026	501-1,000	681 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 · Oct 9, 2026 · View company records in RevenueBase
18	IH Services, INC	Exact match	Sebastian, FL, United StatesHQ recorded Oct 9, 2026	1,001-5,000	651 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 · Oct 9, 2026 · View company records in RevenueBase
19	Pritchard Industries	Exact match	New York, NY, United StatesHQ recorded Oct 9, 2026	10001+	650 contacts →
	Exact match “Driven by a singular vision, it is our mission to provide unparalleled excellence in building services with an emphasis on quality, integrity & innovation.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Facilities Maintenance Management, Llc. FMM	Exact match	Denham Springs, LA, United StatesHQ recorded Oct 9, 2026	n/a	635 contacts →
	Exact match “Facilities Maintenance Management is a company comprised of a team of professionals dedicated to uncompromising quality, responsive service, value and integrity.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	F.E. Moran Group Of Companies	Exact match	Northbrook, IL, United StatesHQ recorded Oct 9, 2026	1,001-5,000	592 contacts →
	Exact match “At F.E.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Colonialwebb	Exact match	Richmond, VA, United StatesHQ recorded Oct 9, 2026	1,001-5,000	585 contacts →
	Exact match “ColonialWebb is built on a simple belief: when people feel like they belong and have a purpose, they can achieve almost anything.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Climate Pros, LLC	Exact match	Glendale Heights, IL, United StatesHQ recorded Oct 9, 2026	1,001-5,000	562 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 · Oct 9, 2026 · View company records in RevenueBase
24	Deem, LLC	Exact match	Indianapolis, IN, United StatesHQ recorded Oct 9, 2026	1,001-5,000	537 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 · Oct 9, 2026 · View company records in RevenueBase
25	MSS Solutions, LLC	Exact match	Charlotte, NC, United StatesHQ recorded Oct 9, 2026	501-1,000	489 contacts →
	Exact match “Since 1996, MSS has made thousands of facilities more efficient, comfortable, secure and reliable for owners, operators and occupiers across the Carolinas and throughout North…” Recorded in the RevenueBase company graph · Oct 9, 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 “building systems maintenance companies”. 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 7,272 building systems maintenance companies based in the United States

See the full list, filter by size, metro and specialty, and access 45,563 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Building systems maintenance companies based in the United States at a glance

As of Oct 9, 2026

32.6%Verified-email coverage

19.2Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Houston

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

2,714

11-50

2,759

51-200

1,246

201-500

297

501-1,000

100

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 7,272 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 “building systems maintenance companies” 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 45,563 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 October 9, 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.

Building systems maintenance companies 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 “building systems maintenance companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building systems maintenance companies are there based in the United States?

RevenueBase identified 7,272 company matches for building systems maintenance companies associated with the United States as of October 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?

Acco Engineered Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most building systems maintenance companies?

Houston leads with 118 company records, followed by New York (105) and Dallas (56).

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 45,563 professional contacts with verified work emails tracked across these 7,272 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 October 9, 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.