Company lists · Data refreshed October 2026

Top 25 Industrial boiler companies based in the United States

RevenueBase identified 355 company matches for industrial boiler companies associated with the United States as of October 2026 and tracks 9,475 professional contacts across them, including 3,942 with verified work emails. Houston is the largest hub.

This list covers company matches for industrial boiler 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 14, 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 14, 2026 How this list was built
355Companies
9,475Contacts tracked
3,942Verified emails
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The 25 largest industrial boiler companies based in the United States

Ranked by team size
Top 25 of 355 company matches for industrial boiler companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 14, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAustin, TX, United StatesHQ recorded Oct 14, 20261,001-5,000960 contacts →

Exact match

“Industrial Process Heating Solutions Through its global network, Thermon provides safe, reliable and innovative mission critical industrial process heating solutions.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
2Exact matchThomasville, GA, United StatesHQ recorded Oct 14, 20261,001-5,000665 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
3Exact matchWalbridge, OH, United StatesHQ recorded Oct 14, 20261,001-5,000277 contacts →

Exact match

“Contractor for Life At GEM Inc, we’re experienced problem solvers with the insight, integrity and resources to see you through your toughest challenges.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
4Exact matchOxnard, United StatesHQ recorded Oct 14, 2026501-1,000245 contacts →

Exact match

“For over 70 years, Raypak has been the world's leading manufacturer of copper finned boilers and heaters.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
5Exact matchLa Palma, CA, United StatesHQ recorded Oct 14, 2026201-500233 contacts →

Exact match

“At TEi, we help the power and process industries operate safely, sustainably, and without costly downtime.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
6Exact matchAtlanta, GA, United StatesHQ recorded Oct 14, 2026201-500212 contacts →

Exact match

“Clyde Industries, a subsidiary of Kadant Inc, headquartered in Atlanta, Georgia, is a leading provider of boiler efficiency solutions for the most demanding applications in the…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
7Exact matchLancaster, OH, United StatesHQ recorded Oct 14, 2026201-500209 contacts →

Exact match

“At Diamond Power, we partner with customers to tackle even the most complex boiler cleaning issues.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
8Exact matchSt. Louis, MO, United StatesHQ recorded Oct 14, 2026201-500202 contacts →

Exact match

“Nooter/Eriksen, the world's leading independent supplier of Natural Circulation Heat Recovery Steam Generators (HRSG) behind gas turbines, is a single source supplier of custom…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
9Exact matchDallas, TX, United StatesHQ recorded Oct 14, 2026201-500198 contacts →

Exact match

“Cleaver-Brooks Sales and Service, is one of the most innovative and fastest growing boiler services companies in the United States.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
10Exact matchHayward, CA, United StatesHQ recorded Oct 14, 2026201-500193 contacts →

Exact match

“R.F.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
11Exact matchPulaski, NY, United StatesHQ recorded Oct 14, 2026501-1,000168 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
12Exact matchCollinsville, OK, United StatesHQ recorded Oct 14, 2026201-500167 contacts →

Exact match

“Victory Energy Operations, LLC is a leading, single-source (concept to completion) supplier of custom-engineered industrial boiler systems and advanced technologies worldwide…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
13Exact matchLouisville, KY, United StatesHQ recorded Oct 14, 202651-200149 contacts →

Exact match

“WARE is a commercial and industrial, boiler rental and service company.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
14Exact matchCity Of Industry, CA, United StatesHQ recorded Oct 14, 202651-200134 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
15Exact matchUtica, United StatesHQ recorded Oct 14, 2026201-500130 contacts →

Exact match

“ECR International, Inc.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
16Exact matchKennesaw, GA, United StatesHQ recorded Oct 14, 202651-200121 contacts →

Exact match

“Established in 1978, ESI is a design, engineering, and construction firm that specializes in steam and power generation facilities.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
17Exact matchOwensboro, KY, United StatesHQ recorded Oct 14, 2026501-1,000118 contacts →

Exact match

“Specialty Mechanical Contractor Shop & Field Services Design & Engineering Fabrication HRSG/Boiler Manufacturing & Erection Turbine Generator Installation, Repair & Maintenance…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
18Exact matchBaltimore, MD, United StatesHQ recorded Oct 14, 202651-200117 contacts →

Exact match

“For over 102 years, Tate Engineering has been a trusted provider of mechanical and industrial solutions across the Mid-Atlantic.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
19Exact matchBlauvelt, NY, United StatesHQ recorded Oct 14, 202651-200115 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
20Exact matchDanbury, CT, United StatesHQ recorded Oct 14, 202651-200104 contacts →

Exact match

“Preferred Utilities Manufacturing Corporation is an engineering-based manufacturer of products for commercial, institutional, industrial and nuclear power facilities.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
21Exact matchLawrence, MA, United StatesHQ recorded Oct 14, 202651-200103 contacts →

Exact match

“Our innovative approach, highly-trained team, and square foot facility gives Helfrich Brothers the ability to offer custom turn-key services for our clients.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
22Exact matchSanta Ana, CA, United StatesHQ recorded Oct 14, 202651-200100 contacts →

Exact match

“California Boiler is a 100% employee-owned company specializing in complete boiler service, sales, parts and rentals.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
23Exact matchNewport News, VA, United StatesHQ recorded Oct 14, 202651-20097 contacts →

Exact match

“Founded in 1985 by Richard J.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
24Exact matchCumming, GA, United StatesHQ recorded Oct 14, 2026201-50096 contacts →

Exact match

“RMR Mechanical is an industrial boiler and mechanical contractor.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
25Exact matchCharlotte, NC, United StatesHQ recorded Oct 14, 202651-20093 contacts →

Exact match

“Founded in 1977, C&C Boiler Sales & Service, Inc.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase

Showing 25 of 355 industrial boiler companies based in the United States

See the full list, filter by size, metro and specialty, and access 3,942 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial boiler companies based in the United States at a glance

As of Oct 14, 2026
41.6%Verified-email coverage
26.7Average contacts per company
11-50Median size (employees)
2.3%Largest-city concentration · Houston
Oct 14, 2026Page data refreshed

Companies by employee count

1-10
113
11-50
144
51-200
72
201-500
13
501-1,000
5
1,001-5,000
5

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 355 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 “industrial boiler 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 3,942 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 14, 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.

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 “industrial boiler companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial boiler companies are there based in the United States?

RevenueBase identified 355 company matches for industrial boiler 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?

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

Which city has the most industrial boiler companies?

Houston leads with 8 company records, followed by Chicago (7) and Chattanooga (6).

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 3,942 professional contacts with verified work emails tracked across these 355 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 14, 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.