Company lists · Data refreshed September 2026

Top 25 Mechanical contractors for energy based in the United States

Name: Mechanical contractors for energy 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 6,931 companies tracked

RevenueBase identified 6,931 company matches for mechanical contractors for energy associated with the United States as of September 2026 and tracks 174,731 professional contacts across them, including 61,919 with verified work emails. Houston is the largest hub.

This list covers company matches for mechanical contractors for energy 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

6,931Companies

174,731Contacts tracked

61,919Verified emails

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The 25 largest mechanical contractors for energy based in the United States

Ranked by team size

Top 25 of 6,931 company matches for mechanical contractors for energy 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	Zachry Group	Exact match	San Antonio, TX, United StatesHQ recorded Sep 17, 2026	10001+	6,824 contacts →
	Exact match “Zachry Group is North America's pacesetter in turnkey engineering, construction, maintenance, turnaround and fabrication services to the energy, chemicals, power, manufacturing…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	FTI	Exact match	Menasha, WI, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,741 contacts →
	Exact match “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Sep 17, 2026	5,001-10,000	2,415 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 · Sep 17, 2026 · View company records in RevenueBase
4	NAES	Exact match	Issaquah, WA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,956 contacts →
	Exact match “NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Brown & Root Industrial Services, LLC	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 17, 2026	5,001-10,000	1,940 contacts →
	Exact match “Brown & Root Industrial Services offers the full range of industrial services – engineering, construction, maintenance, turnaround, and specialty (painting, scaffolding…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Audubon Companies	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,488 contacts →
	Exact match “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Bilfinger North America	Exact match	The Woodlands, TX, United StatesHQ recorded Sep 17, 2026	10001+	1,400 contacts →
	Exact match “As a leading construction and maintenance provider, Bilfinger aims to enhance the efficiency of assets and lower operational costs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Sep 17, 2026	10001+	1,383 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 · Sep 17, 2026 · View company records in RevenueBase
9	NPL Construction CO	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 17, 2026	5,001-10,000	1,358 contacts →
	Exact match “NPL is a nationally recognized leader in energy infrastructure construction, with 50 years of experience.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	10001+	1,330 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Macdonald-Miller Facility Solutions	Exact match	Seatac, WA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,303 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 · Sep 17, 2026 · View company records in RevenueBase
12	Strike	Exact match	Spring, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,155 contacts →
	Exact match “Strike safely and reliably delivers the specialized asset maintenance, construction, and contracting services that are business-critical to the energy, chemical, manufacturing…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
14	Harris	Exact match	St. Paul, MN, United StatesHQ recorded Sep 17, 2026	1,001-5,000	982 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 · Sep 17, 2026 · View company records in RevenueBase
15	Cmta, INC	Exact match	Louisville, KY, United StatesHQ recorded Sep 17, 2026	501-1,000	936 contacts →
	Exact match “CMTA is part of Legence, a Nasdaq Listed company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Wanzek Construction, Inc., A Mastec Company	Exact match	Fargo, ND, United StatesHQ recorded Sep 17, 2026	1,001-5,000	933 contacts →
	Exact match “Wanzek Construction, Inc, a MasTec Renewables company, is a leading general construction contractor and clean energy services company headquartered in Fargo, North Dakota.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Starcon International, INC	Exact match	La Porte, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	866 contacts →
	Exact match “Starcon is a national, full-service contractor offering comprehensive industrial and mechanical services in the oil & gas/refining, chemical/petrochemical, natural gas processing…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	AHERN	Exact match	Fond Du Lac, WI, United StatesHQ recorded Sep 17, 2026	1,001-5,000	849 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 · Sep 17, 2026 · View company records in RevenueBase
19	The Waldinger Corporation	Exact match	Des Moines, IA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	842 contacts →
	Exact match “Established in 1906, The Waldinger Corporation is a premier mechanical, electrical, sheet metal and service contractor operating under a people-first approach.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Kinetics	Exact match	Livermore, CA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	734 contacts →
	Exact match “Founded in 1973, Kinetics is a full-service process and mechanical contractor specializing in the design and installation of process, mechanical, plumbing and HVAC systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	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
22	Wyatt Field Service Company	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	686 contacts →
	Exact match “WYATT is recognized for executing complex maintenance, outage, turnaround, and capital construction projects across the Oil, Gas & Chemical, and Power markets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Apollo Mechanical Contractors	Exact match	Kennewick, WA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	682 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 · Sep 17, 2026 · View company records in RevenueBase
24	Willbros	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	10001+	665 contacts →
	Exact match “Primoris is a specialty energy infrastructure contractor serving the oil and gas and power industries with offerings that primarily include construction, maintenance and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Harder Mechanical Contractors, INC	Exact match	Portland, OR, United StatesHQ recorded Sep 17, 2026	1,001-5,000	656 contacts →
	Exact match “Harder Mechanical is a nationally recognized contractor known for its strong safety culture, ability to meet demanding schedules, commitment to quality, and consistent delivery of…” 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 “mechanical contractors for energy”. 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 6,931 mechanical contractors for energy based in the United States

See the full list, filter by size, metro and specialty, and access 61,919 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Mechanical contractors for energy based in the United States at a glance

As of Sep 17, 2026

35.4%Verified-email coverage

25.2Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

2,173

11-50

2,630

51-200

1,482

201-500

371

501-1,000

125

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 6,931 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 “mechanical contractors for energy” 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 61,919 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.

Mechanical contractors for energy 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 “mechanical contractors for energy”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many mechanical contractors for energy are there based in the United States?

RevenueBase identified 6,931 company matches for mechanical contractors for energy 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?

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

Which city has the most mechanical contractors for energy?

Houston leads with 117 company records, followed by New York (86) and Indianapolis (43).

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 61,919 professional contacts with verified work emails tracked across these 6,931 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.