Company lists · Data refreshed September 2026

Top 25 Mechanical contractors for energy based in Houston, United States

Name: Mechanical contractors for energy based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 117 companies tracked

RevenueBase identified 117 mechanical contractors for energy headquartered in Houston, United States as of September 2026 and tracks 7,850 professional contacts across them, including 2,725 with verified work emails. Houston is the largest hub.

This list covers mechanical contractors for energy headquartered in Houston, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

117Companies

7,850Contacts tracked

2,725Verified emails

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The 25 largest mechanical contractors for energy based in Houston, United States

Ranked by team size

Top 25 of 117 mechanical contractors for energy based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to mechanical contractors for energy: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Audubon Companies	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,488 contacts →
	Partial evidence “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Source: RevenueBase Database · checked Sep 17, 2026
2	Comfort Systems USA	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	1,330 contacts →
	Indirect evidence “Comfort Systems USA \| Quality People.” Source: RevenueBase Database · checked Sep 17, 2026
3	Wyatt Field Service Company	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	686 contacts →
	Indirect evidence “WYATT is recognized for executing complex maintenance, outage, turnaround, and capital construction projects across the Oil, Gas & Chemical, and Power markets.” Source: RevenueBase Database · checked Sep 17, 2026
4	Willbros	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	665 contacts →
	Strong evidence “Primoris is a specialty energy infrastructure contractor serving the oil and gas and power industries with offerings that primarily include construction, maintenance and…” Source: RevenueBase Database · checked Sep 17, 2026
5	Scmi INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	n/a	470 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
6	CAM Industrial Solutions LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	434 contacts →
	Indirect evidence “With decades of refinery, petrochemical, fertilizer and power plant experience, CAM Industrial Solutions has become the standard in heavy industrial maintenance, turnaround and…” Source: RevenueBase Database · checked Sep 17, 2026
7	Kilgore Industries, LP	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	255 contacts →
	Partial evidence “Kilgore Industries, LP offers turnkey mechanical contracting services including electrical and plumbing construction solutions.” Source: RevenueBase Database · checked Sep 17, 2026
8	Gulfspan Industrial LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	251 contacts →
	Partial evidence “Gulfspan Industrial, LLC is a mechanical construction and industrial services company that specializes in performing turnarounds, capital projects, and maintenance.” Source: RevenueBase Database · checked Sep 17, 2026
9	Summit Industrial	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	239 contacts →
	Strong evidence “Founded in 1996, Summit Industrial is a Specialty Mechanical Contractor that offers full-service engineering, design-assist and turnkey, direct hire construction services.” Source: RevenueBase Database · checked Sep 17, 2026
10	WAY Engineering, LTD	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	175 contacts →
	Indirect evidence “Way Engineering's quest for building excellence began in 1918 when a modest, but dedicated refrigeration business opened its doors in Houston, Texas.” Source: RevenueBase Database · checked Sep 17, 2026
11	Holloman Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	125 contacts →
	Partial evidence “Holloman Corporation is an Engineering, Procurement, and Construction company with capabilities to design, build, and service energy-related projects on a global level.” Source: RevenueBase Database · checked Sep 17, 2026
12	Letsos Company	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	115 contacts →
	Indirect evidence “In 1953, James N.” Source: RevenueBase Database · checked Sep 17, 2026
13	Custom AIR Products & Services, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	114 contacts →
	Indirect evidence “Custom Air Products & Services, Inc.(CAPS), an AirX Climate Solutions company, is a full-service HVAC company that specializes in the design, construction, installation…” Source: RevenueBase Database · checked Sep 17, 2026
14	C2o Americas	Strong evidence	Houston, United StatesHQ checked Sep 17, 2026	201-500	94 contacts →
	Strong evidence “Supporting Global Energy and Infrastructure Projects, C2O Group provides electrical, communications and mechanical services.” Source: RevenueBase Database · checked Sep 17, 2026
15	Gray Mechanical Contractors, LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	88 contacts →
	Strong evidence “Gray Mechanical Contractors is a licensed HVAC and Plumbing contractor providing construction services for General Contractors and building owners throughout Texas.” Source: RevenueBase Database · checked Sep 17, 2026
16	Raven Mechanical, LP	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	72 contacts →
	Strong evidence “Raven Mechanical, founded 1979, is a full service mechanical contractor specializing in Plumbing and HVAC service and construction.” Source: RevenueBase Database · checked Sep 17, 2026
17	Humphrey Company, LTD	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	69 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
18	BD Energy Systems, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	65 contacts →
	Partial evidence “BD Energy Systems LLC located in Houston, TX, USA is a world leading engineering company operating in the Petrochemical, Fertilizer, Refining, and Gas Processing industry…” Source: RevenueBase Database · checked Sep 17, 2026
19	Sitewide Project Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	58 contacts →
	Partial evidence “Sitewide Project Solutions provides Instrumentation, Electrical and Mechanical Project Support.” Source: RevenueBase Database · checked Sep 17, 2026
20	Har-Con Mechanical	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	50 contacts →
	Strong evidence “Founded in 1955, HAR-CON is a full service mechanical contractor well versed in Plumbing and HVAC.” Source: RevenueBase Database · checked Sep 17, 2026
21	PSI Constructors	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	45 contacts →
	Indirect evidence “PSI Constructors: Building the Backbone of Industry PSI Constructors specializes in delivering high-quality fabrication, installation, and maintenance solutions for the heavy…” Source: RevenueBase Database · checked Sep 17, 2026
22	WAY Companies	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	42 contacts →
	Strong evidence “Way Companies is a full-service commercial and industrial HVACR contractor delivering mechanical design-build, preventative maintenance, emergency service, retrofits, and building…” Source: RevenueBase Database · checked Sep 17, 2026
23	Comfort Systems USA	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	41 contacts →
	Partial evidence “As a leading HVAC retrofit, design, build, and services firm based in Houston, Comfort Systems USA - South Central specializes in installing, maintaining, and upgrading mechanical…” Source: RevenueBase Database · checked Sep 17, 2026
24	RDI Mechanical	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	39 contacts →
	Strong evidence “Since RDI Mechanical has been Houston's go-to commercial HVAC and mechanical contractor.” Source: RevenueBase Database · checked Sep 17, 2026
25	Infinity Systems, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	30 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: mechanical contractors for energy. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names mechanical contractors for energy.
Partial evidence: Its own public description names part of mechanical contractors for energy, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mechanical contractors for energy. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 117 mechanical contractors for energy based in Houston, United States

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Mechanical contractors for energy based in Houston, United States at a glance

As of Sep 17, 2026

34.7%Verified-email coverage

67.1Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 117 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among mechanical contractors for energy, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Houston, United States whose own description of what they do matches “mechanical contractors for energy”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names mechanical contractors for energy), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among mechanical contractors for energy, and records with no verified work email. Companies headquartered outside Houston are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 2,725 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Mechanical contractors for energy by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names mechanical contractors for energy, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 117 mechanical contractors for energy headquartered in Houston, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Audubon Companies, headquartered in Houston, tops this list with the largest team on record.

Which city has the most mechanical contractors for energy?

Houston leads with 117 headquartered companies, followed by New York (85) and Indianapolis (43).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,725 verified decision-maker contacts tracked across these 117 companies.

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 Smart Search, 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.