Company lists · Data refreshed September 2026

Top 25 Industrial steam system manufacturers based in the United States

Name: Industrial steam system manufacturers 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 352 companies tracked

RevenueBase identified 352 industrial steam system manufacturers headquartered in the United States as of September 2026 and tracks 7,855 professional contacts across them, including 3,300 with verified work emails. Houston is the largest hub.

This list covers industrial steam system manufacturers headquartered in the 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

352Companies

7,855Contacts tracked

3,300Verified emails

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The 25 largest industrial steam system manufacturers based in the United States

Ranked by team size

Top 25 of 352 industrial steam system manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial steam system manufacturers: 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	Armstrong International Intelligent Solutions In Steam, AIR And HOT Water	Indirect evidence	Three Rivers, MI, United StatesHQ checked Sep 17, 2026	1,001-5,000	826 contacts →
	Indirect evidence “Solving problems with innovative and intelligent products is at the heart of what we do.” Source: RevenueBase Database · checked Sep 17, 2026
2	Cleaver-Brooks	Partial evidence	Thomasville, GA, United StatesHQ checked Sep 17, 2026	1,001-5,000	631 contacts →
	Partial evidence “Cleaver-Brooks, Inc, a manufacturer of boiler room products for over 90 years, is the only single source manufacturer and supplier of boiler room products including boilers…” Source: RevenueBase Database · checked Sep 17, 2026
3	GEM Incorporated	Indirect evidence	Walbridge, OH, United StatesHQ checked Sep 17, 2026	1,001-5,000	270 contacts →
	Indirect evidence “Contractor for Life At GEM Inc, we’re experienced problem solvers with the insight, integrity and resources to see you through your toughest challenges.” Source: RevenueBase Database · checked Sep 17, 2026
4	Processbarron	Partial evidence	Pelham, AL, United StatesHQ checked Sep 17, 2026	201-500	204 contacts →
	Partial evidence “With 40+ years of proven leadership in the design, manufacturing, installation, and service of heavy process equipment, ProcessBarron is the industry's total systems solutions…” Source: RevenueBase Database · checked Sep 17, 2026
5	Cleaver-Brooks Sales And Service	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	201-500	193 contacts →
	Indirect evidence “Cleaver-Brooks Sales and Service, is one of the most innovative and fastest growing boiler services companies in the United States.” Source: RevenueBase Database · checked Sep 17, 2026
6	R.F. Macdonald CO	Indirect evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	201-500	190 contacts →
	Indirect evidence “R.F.” Source: RevenueBase Database · checked Sep 17, 2026
7	Fulton	Strong evidence	Pulaski, NY, United StatesHQ checked Sep 17, 2026	501-1,000	171 contacts →
	Strong evidence “Fulton specializes in custom engineered industrial and commercial heating systems featuring steam boilers, hot water and hydronic boilers, thermal fluid heaters, and a full range…” Source: RevenueBase Database · checked Sep 17, 2026
8	Victory Energy Operations, LLC	Strong evidence	Collinsville, OK, United StatesHQ checked Sep 17, 2026	201-500	162 contacts →
	Strong evidence “Victory Energy Operations, LLC is a leading, single-source (concept to completion) supplier of custom-engineered industrial boiler systems and advanced technologies worldwide…” Source: RevenueBase Database · checked Sep 17, 2026
9	Clayton Industries	Strong evidence	City Of Industry, CA, United StatesHQ checked Sep 17, 2026	51-200	132 contacts →
	Strong evidence “Since its inception on October 20, 1930, Clayton Industries has established a world-wide reputation as a leading manufacturer of equipment for industrial process steam…” Source: RevenueBase Database · checked Sep 17, 2026
10	WARE	Partial evidence	Louisville, KY, United StatesHQ checked Sep 17, 2026	51-200	131 contacts →
	Partial evidence “WARE is a commercial and industrial, boiler rental and service company.” Source: RevenueBase Database · checked Sep 17, 2026
11	Tate Engineering Systems, INC	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 17, 2026	51-200	115 contacts →
	Partial evidence “For over 102 years, Tate Engineering has been a trusted provider of mechanical and industrial solutions across the Mid-Atlantic.” Source: RevenueBase Database · checked Sep 17, 2026
12	ESI Inc. Of Tennessee	Partial evidence	Kennesaw, GA, United StatesHQ checked Sep 17, 2026	51-200	112 contacts →
	Partial evidence “Established in 1978, ESI is a design, engineering, and construction firm that specializes in steam and power generation facilities.” Source: RevenueBase Database · checked Sep 17, 2026
13	Titan Contracting And Leasing Co., INC	Indirect evidence	Owensboro, KY, United StatesHQ checked Sep 17, 2026	501-1,000	112 contacts →
	Indirect evidence “Specialty Mechanical Contractor Shop & Field Services Design & Engineering Fabrication HRSG/Boiler Manufacturing & Erection Turbine Generator Installation, Repair & Maintenance…” Source: RevenueBase Database · checked Sep 17, 2026
14	Helfrich Brothers Boiler Works	Indirect evidence	Lawrence, MA, United StatesHQ checked Sep 17, 2026	51-200	106 contacts →
	Indirect evidence “Our innovative approach, highly-trained team, and square foot facility gives Helfrich Brothers the ability to offer custom turn-key services for our clients.” Source: RevenueBase Database · checked Sep 17, 2026
15	Forney Corporation	Strong evidence	Addison, TX, United StatesHQ checked Sep 17, 2026	51-200	106 contacts →
	Strong evidence “Forney® has maintained its position as a leader in power plant and large industrial systems for more than 90 years by designing, manufacturing, installing and servicing the most…” Source: RevenueBase Database · checked Sep 17, 2026
16	Preferred Utilities Manufacturing Corporation	Strong evidence	Danbury, CT, United StatesHQ checked Sep 17, 2026	51-200	104 contacts →
	Strong evidence “Preferred Utilities Manufacturing Corporation is an engineering-based manufacturer of products for commercial, institutional, industrial and nuclear power facilities.” Source: RevenueBase Database · checked Sep 17, 2026
17	California Boiler	Indirect evidence	Santa Ana, CA, United StatesHQ checked Sep 17, 2026	51-200	102 contacts →
	Indirect evidence “California Boiler is a 100% employee-owned company specializing in complete boiler service, sales, parts and rentals.” Source: RevenueBase Database · checked Sep 17, 2026
18	RMR Mechanical LLC And Bodman Services LLC	Partial evidence	Cumming, GA, United StatesHQ checked Sep 17, 2026	201-500	94 contacts →
	Partial evidence “RMR Mechanical is an industrial boiler and mechanical contractor.” Source: RevenueBase Database · checked Sep 17, 2026
19	Delval Equipment	Indirect evidence	West Norriton, PA, United StatesHQ checked Sep 17, 2026	51-200	92 contacts →
	Indirect evidence “Delval has provided thousands of packaged boilers to our trusted clients, more than any other supplier in the region.” Source: RevenueBase Database · checked Sep 17, 2026
20	C&c Boiler Sales & Service, INC	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 17, 2026	51-200	90 contacts →
	Indirect evidence “Founded in 1977, C&C Boiler Sales & Service, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
21	CHC Hydro	Strong evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	51-200	82 contacts →
	Strong evidence “CHC Hydronics is a leading Manufacturers Representative and Package Systems Manufacturer of HVAC Hydronics, Steam, Heat Transfer, and Plumbing Equipment.” Source: RevenueBase Database · checked Sep 17, 2026
22	Superior Boiler	Indirect evidence	Hutchinson, KS, United StatesHQ checked Sep 17, 2026	51-200	81 contacts →
	Indirect evidence “Superior Boiler provides engineered energy solutions and is a leader in clean air emissions technology.” Source: RevenueBase Database · checked Sep 17, 2026
23	Hurst Boiler & Welding Company, INC	Indirect evidence	Coolidge, GA, United StatesHQ checked Sep 17, 2026	201-500	73 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	Rentech Boiler Systems, INC	Indirect evidence	Abilene, TX, United StatesHQ checked Sep 17, 2026	201-500	64 contacts →
	Indirect evidence “RENTECH was founded in 1996 to build boilers for people who know and care.” Source: RevenueBase Database · checked Sep 17, 2026
25	Pbbs Equipment Corporation	Indirect evidence	Menomonee Falls, WI, United StatesHQ checked Sep 17, 2026	51-200	63 contacts →
	Indirect evidence “PBBS has been providing customer-oriented service since 1955.” 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: industrial steam system manufacturers. 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 industrial steam system manufacturers.
Partial evidence: Its own public description names part of industrial steam system manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial steam system manufacturers. 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 352 industrial steam system manufacturers based in the United States

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Industrial steam system manufacturers based in the United States at a glance

As of Sep 17, 2026

42.0%Verified-email coverage

22.3Average contacts per company

11-50Median size (employees)

2.6%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

119

11-50

149

51-200

201-500

501-1,000

1,001-5,000

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 352 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 industrial steam system manufacturers, 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 the United States whose own description of what they do matches “industrial steam system manufacturers”. 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 industrial steam system manufacturers), 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 industrial steam system manufacturers, and records with no verified work email. Companies headquartered outside United States 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, 3,300 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.

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 industrial steam system manufacturers, 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 industrial steam system manufacturers are there based in the United States?

RevenueBase identified 352 industrial steam system manufacturers headquartered in the 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?

Armstrong International Intelligent Solutions In Steam, AIR And HOT Water, headquartered in Three Rivers, tops this list with the largest team on record.

Which city has the most industrial steam system manufacturers?

Houston leads with 9 headquartered companies, followed by Chattanooga (5) and New York (5).

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 3,300 verified decision-maker contacts tracked across these 352 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.