Company lists · Data refreshed November 2026

Top 25 Process heating system providers based in the United States

RevenueBase identified 1,166 company matches for process heating system providers associated with the United States as of November 2026 and tracks 25,508 professional contacts across them, including 9,380 with verified work emails. Houston is the largest hub.

This list covers company matches for process heating system providers 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 November 6, 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 Nov 6, 2026 How this list was built
1,166Companies
25,508Contacts tracked
9,380Verified emails
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The 25 largest process heating system providers based in the United States

Ranked by team size
Top 25 of 1,166 company matches for process heating system providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchTulsa, OK, United StatesHQ recorded Nov 6, 20261,001-5,000946 contacts →

Exact match

“Since 1979, Zeeco is the trusted worldwide source for the design and manufacturing of combustion and environmental solutions for the refining, petrochemical, production, power and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchThomasville, WI, United StatesHQ recorded Nov 6, 20261,001-5,000695 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCary, IL, United StatesHQ recorded Nov 6, 2026201-500418 contacts →

Exact match

“Durex Industries has over 40 years of excellence in designing and manufacturing custom thermal solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBuffalo, NY, United StatesHQ recorded Nov 6, 20261,001-5,000394 contacts →

Exact match

“API Heat Transfer is a leading global provider of heat transfer solutions, recognized for delivering innovative, energy-efficient equipment for more than 140 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchNew Lenox, LA, United StatesHQ recorded Nov 6, 2026501-1,000390 contacts →

Exact match

“Superheat was founded on the principle that cutting-edge technology can offer a Better.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBurr Ridge, NC, United StatesHQ recorded Nov 6, 2026501-1,000299 contacts →

Exact match

“Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBatavia, NY, United StatesHQ recorded Nov 6, 2026201-500291 contacts →

Exact match

“Graham Manufacturing, a GHM Company, designs and builds vacuum and heat transfer equipment for process industries worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWalbridge, OH, United StatesHQ recorded Nov 6, 20261,001-5,000279 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchOxnard, United StatesHQ recorded Nov 6, 2026501-1,000252 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLa Palma, CA, United StatesHQ recorded Nov 6, 2026201-500239 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWarren, OH, United StatesHQ recorded Nov 6, 2026201-500237 contacts →

Exact match

“Ajax TOCCO Magnethermic® designs and manufactures world class induction heating and melting equipment for various industries and applications throughout the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchPelham, AL, United StatesHQ recorded Nov 6, 2026201-500237 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDe Pere, WI, United StatesHQ recorded Nov 6, 2026501-1,000214 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHayward, CA, United StatesHQ recorded Nov 6, 2026201-500213 contacts →

Exact match

“Established in 1983, Therm-x takes pride in delivering thermal solutions incorporating our vertical integration capabilities including; Thermal Design and Test, CNC Machining…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchHayward, CA, United StatesHQ recorded Nov 6, 2026201-500211 contacts →

Exact match

“R.F.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSt. Louis, MO, United StatesHQ recorded Nov 6, 2026201-500208 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 · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLafayette, LA, United StatesHQ recorded Nov 6, 2026201-500207 contacts →

Exact match

“Analytic Stress made a commitment to quality, safety, and the customer when the company started in the Fall of 1979.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDallas, TX, United StatesHQ recorded Nov 6, 2026201-500203 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 · Nov 6, 2026 · View company records in RevenueBase
19Exact matchWellsville, NY, United StatesHQ recorded Nov 6, 20261,001-5,000191 contacts →

Exact match

“LJUNGSTRÖM is a global leader in heat transfer, energy technology, and advanced manufacturing, delivering engineered solutions that improve performance, reliability, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchGreensboro, NC, United StatesHQ recorded Nov 6, 2026201-500180 contacts →

Exact match

“Since 1935, AC Corporation has provided quality systems for the industrial and commercial markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchPulaski, NY, United StatesHQ recorded Nov 6, 2026501-1,000177 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 · Nov 6, 2026 · View company records in RevenueBase
22Exact matchCollinsville, OK, United StatesHQ recorded Nov 6, 2026201-500170 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 · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBennettsville, SC, United StatesHQ recorded Nov 6, 2026201-500169 contacts →

Exact match

“Marley Engineered Products® draws upon a long history of providing reliable comfort heating and ventilation solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchThree Rivers, MI, United StatesHQ recorded Nov 6, 20261,001-5,000167 contacts →

Exact match

“Kadant Johnson LLC, based in Three Rivers, Michigan, is a leading provider of fluid handling equipment and services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchWilloughby, OH, United StatesHQ recorded Nov 6, 2026201-500162 contacts →

Exact match

“For over 45 years, Process Technology has enabled Semiconductor, Industrial, and Surface Finishing businesses to realize their full potential.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,166 process heating system providers based in the United States

See the full list, filter by size, metro and specialty, and access 9,380 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Process heating system providers based in the United States at a glance

As of Nov 6, 2026
36.8%Verified-email coverage
21.9Average contacts per company
11-50Median size (employees)
1.8%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
450
11-50
438
51-200
199
201-500
43
501-1,000
11
1,001-5,000
13
5,001-10,000
1
10001+
1

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 1,166 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 “process heating system providers” 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 9,380 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 November 6, 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 “process heating system providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many process heating system providers are there based in the United States?

RevenueBase identified 1,166 company matches for process heating system providers associated with the United States as of November 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?

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

Which city has the most process heating system providers?

Houston leads with 21 company records, followed by Tulsa (20) and Chicago (12).

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 9,380 professional contacts with verified work emails tracked across these 1,166 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 November 6, 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.