Company lists · Data refreshed October 2026

Top 25 Commercial building systems contractors worldwide

Name: Commercial building systems contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 16,083 companies tracked

RevenueBase identified 16,083 company matches for commercial building systems contractors worldwide as of October 2026 and tracks 245,458 professional contacts across them, including 84,007 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for commercial building systems contractors worldwide, 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 10, 2026. Country and city lists for commercial building systems contractors follow the table.

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 10, 2026 How this list was built

16,083Companies

245,458Contacts tracked

84,007Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest commercial building systems contractors worldwide

Ranked by team size

Top 25 of 16,083 company matches for commercial building systems contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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	Tyco Simplexgrinnell	Exact match	Cork, IrelandHQ recorded Oct 10, 2026	10001+	3,160 contacts →
	Exact match “Tyco is now Johnson Controls, the world leader in fire protection, security, HVAC, building controls and energy storage.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	Southland Industries	Exact match	Garden Grove, CA, United StatesHQ recorded Oct 10, 2026	10001+	3,010 contacts →
	Exact match “As one of the nation's largest building systems experts, Southland Industries provides innovative, practical results for your engineering, construction, service, and energy needs.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
4	Flynn Group Of Companies	Exact match	Mississauga, ON, CanadaHQ recorded Oct 10, 2026	5,001-10,000	1,991 contacts →
	Exact match “The Flynn Group of Companies is North America's leading building envelope trade contractor.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	Modern Niagara	Exact match	Kanata, ON, CanadaHQ recorded Oct 10, 2026	1,001-5,000	1,585 contacts →
	Exact match “We build for life.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Macdonald-Miller Facility Solutions	Exact match	Seatac, WA, United StatesHQ recorded Oct 10, 2026	1,001-5,000	1,365 contacts →
	Exact match “MacDonald-Miller Facility Solutions is a full-service, design-build mechanical contractor in the Pacific Northwest.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Oct 10, 2026	10001+	1,354 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	Bravida Danmark A S	Exact match	Brøndby, DenmarkHQ recorded Oct 10, 2026	1,001-5,000	1,342 contacts →
	Exact match “Bravida Danmark er blandt landets største tekniske installations- og servicevirksomheder med over medarbejdere i byer landet over, og vi er en arbejdsplads, der har plads til alle.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	Automated Logic Corporation	Exact match	Kennesaw, GA, United StatesHQ recorded Oct 10, 2026	501-1,000	1,181 contacts →
	Exact match “Automated Logic Corporation (ALC) provides innovative building automation and control systems.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	Henderson Engineers	Exact match	Lenexa, KS, United StatesHQ recorded Oct 10, 2026	501-1,000	1,096 contacts →
	Exact match “Henderson Engineers is a national building systems design firm with a wide array of engineering services and a portfolio representing a full range of markets including business…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
12	Harris	Exact match	St. Paul, MN, United StatesHQ recorded Oct 10, 2026	1,001-5,000	1,025 contacts →
	Exact match “Harris is a leading national mechanical contractor specializing in design and engineering, construction, controls, service, manufacturing, conveyors and end-to-end building…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Cmta, INC	Exact match	Louisville, KY, United StatesHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
14	Bravida Norge AS	Exact match	Oslo, NorwayHQ recorded Oct 10, 2026	1,001-5,000	898 contacts →
	Exact match “Bravida gir bygninger liv.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	AHERN	Exact match	Fond Du Lac, WI, United StatesHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
16	Archkey Solutions	Exact match	St. Louis, MO, United StatesHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
17	Apollo Mechanical Contractors	Exact match	Kennewick, WA, United StatesHQ recorded Oct 10, 2026	1,001-5,000	718 contacts →
	Exact match “Apollo is based in Kennewick, Washington, performing Full Mechanical projects across the United States and around the world.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Baker Group	Exact match	Ankeny, IA, United StatesHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
19	ME Engineers	Exact match	Golden, CO, United StatesHQ recorded Oct 10, 2026	201-500	709 contacts →
	Exact match “ME Engineers has earned a reputation as a global leader in the design of innovative MEPT systems that bring to life the world's most innovative sports and entertainment venues.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	Bahri & Mazroei Technical Systems Company LLC Bmts	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 10, 2026	1,001-5,000	690 contacts →
	Exact match “Bahri & Mazroei Technical Systems Co.(BMTS) is a regional system integrator in Gulf region since many decades with has its origin since 1968 through Bahri & Mazroei Trading…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	Albireo Energy	Exact match	Edison, NJ, United StatesHQ recorded Oct 10, 2026	1,001-5,000	658 contacts →
	Exact match “Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	Temon Serviços	Exact match	São Paulo, BrazilHQ recorded Oct 10, 2026	1,001-5,000	650 contacts →
	Exact match “A Temon Serviços é a empresa líder na engenharia de manutenção e operação de sistemas prediais de alta complexidade.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	Rovisys Building Technologies	Exact match	Aurora, OH, United StatesHQ recorded Oct 10, 2026	1,001-5,000	646 contacts →
	Exact match “As part of the RoviSys family of companies, we deliver vendor independent building automation, electrical power management, facility monitoring, and systems integration solutions…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	Crown House Technologies	Exact match	Dartford, United KingdomHQ recorded Oct 10, 2026	1,001-5,000	640 contacts →
	Exact match “Part of the Laing O’Rourke Group, and founded on more than 200 years of experience, we are a leading construction and infrastructure technology services provider, supplying a…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	Kropman	Exact match	Nijmegen, NetherlandsHQ recorded Oct 10, 2026	501-1,000	619 contacts →
	Exact match “Kropman ontwerpt, bouwt en onderhoudt en beheert gebouwgebonden installaties.” Recorded in the RevenueBase company graph · Oct 10, 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 “commercial building systems 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 16,083 commercial building systems contractors worldwide

See the full list, filter by size, metro and specialty, and access 84,007 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Commercial building systems contractors worldwide at a glance

As of Oct 10, 2026

34.2%Verified-email coverage

15.3Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Sao Paulo

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

6,766

11-50

6,142

51-200

2,346

201-500

485

501-1,000

149

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for commercial building systems contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “commercial building systems 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. 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 84,007 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 10, 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.

Commercial building systems contractors by location

73 lists · largest first

Every Commercial building systems contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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

How many commercial building systems contractors are there worldwide?

RevenueBase identified 16,083 company matches for commercial building systems contractors worldwide 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?

Tyco Simplexgrinnell tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most commercial building systems contractors?

The United States leads with 5,500 companies, followed by the United Kingdom (927) and Canada (746). Every commercial building systems contractors list by country and city is linked on this page.

Which city has the most commercial building systems contractors?

Sao Paulo leads with 170 company records, followed by London (122) and Dubai (104).

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 84,007 professional contacts with verified work emails tracked across these 16,083 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 10, 2026.

Ready to reach these companies? Verified emails and direct dials for all 16,083 commercial building systems contractors worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.