Company lists · Data refreshed September 2026

Top 25 Thermal fluid system manufacturers based in the United States

Name: Thermal fluid 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 30, 2026 374 companies tracked

RevenueBase identified 374 thermal fluid system manufacturers headquartered in the United States as of September 2026 and tracks 20,623 professional contacts across them, including 6,333 with verified work emails. Houston is the largest hub.

This list covers thermal fluid 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 30, 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 30, 2026 86% judged on-target in blind review

374Companies

20,623Contacts tracked

6,333Verified emails

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The 25 largest thermal fluid system manufacturers based in the United States

Ranked by team size

Top 25 of 374 thermal fluid system manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to thermal fluid 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	Swagelok	Strong evidence	Solon, OH, United StatesHQ checked Sep 30, 2026	5,001-10,000	3,475 contacts →
	Strong evidence “Swagelok industrial fluid system products and engineering services have helped the world contain, control, and transfer liquids and gases in critical applications since 1947.” Source: RevenueBase Database · checked Sep 30, 2026
2	Modine Manufacturing Company	Partial evidence	Racine, WI, United StatesHQ checked Sep 30, 2026	10001+	2,927 contacts →
	Partial evidence “Since 1916, Modine Manufacturing Company has applied innovative thermal technology to meet customer's needs.” Source: RevenueBase Database · checked Sep 30, 2026
3	Celeros Flow Technology	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 30, 2026	1,001-5,000	928 contacts →
	Indirect evidence “Your "FULL-LIFECYCLE" Partner for Sustainable Flow Technology Solutions.” Source: RevenueBase Database · checked Sep 30, 2026
4	Thermon	Partial evidence	Austin, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	901 contacts →
	Partial evidence “Industrial Process Heating Solutions Through its global network, Thermon provides safe, reliable and innovative mission critical industrial process heating solutions.” Source: RevenueBase Database · checked Sep 30, 2026
5	Armstrong International Intelligent Solutions In Steam, AIR And HOT Water	Indirect evidence	Three Rivers, MI, United StatesHQ checked Sep 30, 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 30, 2026
6	Evapco, INC	Partial evidence	Taneytown, MD, United StatesHQ checked Sep 30, 2026	1,001-5,000	569 contacts →
	Partial evidence “At EVAPCO, we are more than a manufacturer-we are a global team of employee-owners committed to delivering innovative heat transfer solutions for customers worldwide.” Source: RevenueBase Database · checked Sep 30, 2026
7	Tranter	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	442 contacts →
	Partial evidence “Tranter is a global engineering and manufacturing group specializing in thermal management in the process industries, district heating and within the building envelope.” Source: RevenueBase Database · checked Sep 30, 2026
8	API Heat Transfer	Indirect evidence	Buffalo, NY, United StatesHQ checked Sep 30, 2026	1,001-5,000	364 contacts →
	Indirect evidence “API Heat Transfer is a leading global provider of heat transfer solutions, recognized for delivering innovative, energy-efficient equipment for more than 140 years.” Source: RevenueBase Database · checked Sep 30, 2026
9	Graham Manufacturing	Indirect evidence	Batavia, NY, United StatesHQ checked Sep 30, 2026	201-500	277 contacts →
	Indirect evidence “Graham Manufacturing, a GHM Company, designs and builds vacuum and heat transfer equipment for process industries worldwide.” Source: RevenueBase Database · checked Sep 30, 2026
10	Horton, INC	Strong evidence	Roseville, MN, United StatesHQ checked Sep 30, 2026	201-500	267 contacts →
	Strong evidence “As a global leader in thermal control for power systems, Horton® offers a variety of technologies for transportation and industrial applications to operate at the optimal…” Source: RevenueBase Database · checked Sep 30, 2026
11	Thermal Engineering International USA INC	Indirect evidence	La Palma, CA, United StatesHQ checked Sep 30, 2026	201-500	219 contacts →
	Indirect evidence “At TEi, we help the power and process industries operate safely, sustainably, and without costly downtime.” Source: RevenueBase Database · checked Sep 30, 2026
12	Nooter Eriksen, INC	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 30, 2026	201-500	198 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
13	Advanced Cooling Technologies, INC	Partial evidence	Lancaster, PA, United StatesHQ checked Sep 30, 2026	201-500	190 contacts →
	Partial evidence “What We Do ACT develops passive and active thermal solutions for demanding environments where performance margins are tight and failure is costly.” Source: RevenueBase Database · checked Sep 30, 2026
14	Therm-X, California	Partial evidence	Hayward, CA, United StatesHQ checked Sep 30, 2026	201-500	189 contacts →
	Partial evidence “Established in 1983, Therm-x takes pride in delivering thermal solutions incorporating our vertical integration capabilities including; Thermal Design and Test, CNC Machining…” Source: RevenueBase Database · checked Sep 30, 2026
15	Ljungström	Indirect evidence	Wellsville, NY, United StatesHQ checked Sep 30, 2026	1,001-5,000	184 contacts →
	Indirect evidence “LJUNGSTRÖM is a global leader in heat transfer, energy technology, and advanced manufacturing, delivering engineered solutions that improve performance, reliability, and…” Source: RevenueBase Database · checked Sep 30, 2026
16	Fulton	Strong evidence	Pulaski, NY, United StatesHQ checked Sep 30, 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 30, 2026
17	Fives North American Combustion, INC	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 30, 2026	201-500	171 contacts →
	Indirect evidence “Since 1918, we have been committed to meeting our customers' needs in the best of all possible ways.” Source: RevenueBase Database · checked Sep 30, 2026
18	Wolverine Tube, INC	Partial evidence	Shawnee, OK, United StatesHQ checked Sep 30, 2026	501-1,000	159 contacts →
	Partial evidence “For over a century, Wolverine Tube has been an industry leader in providing innovative heat transfer solutions including the design, development, and fabrication of thermal…” Source: RevenueBase Database · checked Sep 30, 2026
19	Kadant Johnson LLC	Partial evidence	Three Rivers, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	158 contacts →
	Partial evidence “Kadant Johnson LLC, based in Three Rivers, Michigan, is a leading provider of fluid handling equipment and services.” Source: RevenueBase Database · checked Sep 30, 2026
20	WCR Heat Exchangers	Indirect evidence	Fairborn, OH, United StatesHQ checked Sep 30, 2026	201-500	130 contacts →
	Indirect evidence “Since 1980, WCR Incorporated has been dedicated to helping our customers prolong the life of their heat exchangers with the largest parts inventory in North America and a…” Source: RevenueBase Database · checked Sep 30, 2026
21	Wakefield Thermal	Partial evidence	Nashua, NH, United StatesHQ checked Sep 30, 2026	501-1,000	130 contacts →
	Partial evidence “Wakefield Thermal is one of the world’s leading complete end-to-end thermal solutions design, engineering and manufacturing companies, with over 50 years experience solving…” Source: RevenueBase Database · checked Sep 30, 2026
22	Petro-Chem Development Co., INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	127 contacts →
	Indirect evidence “Petro-Chem Development Co, Inc (PCD) was founded in 1939 and has been recognized as a leader in the design and production of fired heaters and furnaces.” Source: RevenueBase Database · checked Sep 30, 2026
23	Aereon	Partial evidence	Austin, TX, United StatesHQ checked Sep 30, 2026	201-500	125 contacts →
	Partial evidence “Aereon has become the international arm of Cimarron, an international solution provider that engineers and manufactures environmental control, production, and process equipment…” Source: RevenueBase Database · checked Sep 30, 2026
24	Transtech Group	Indirect evidence	Mcgregor, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	124 contacts →
	Indirect evidence “TransTech Group is a leading provider of engineered solutions and services for the energy and industrial process industries.” Source: RevenueBase Database · checked Sep 30, 2026
25	Hydro-Thermal Corporation	Strong evidence	Waukesha, WI, United StatesHQ checked Sep 30, 2026	51-200	108 contacts →
	Strong evidence “Hydro-Thermal helps global manufacturers maintain product quality by heating liquids and process fluids reliably and to precise temperatures for a multitude of direct steam…” Source: RevenueBase Database · checked Sep 30, 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: thermal fluid 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 thermal fluid system manufacturers.
Partial evidence: Its own public description names part of thermal fluid system manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name thermal fluid 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 374 thermal fluid system manufacturers based in the United States

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Thermal fluid system manufacturers based in the United States at a glance

As of Sep 30, 2026

30.7%Verified-email coverage

55.1Average contacts per company

11-50Median size (employees)

4.3%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

113

11-50

133

51-200

201-500

501-1,000

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 374 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 thermal fluid 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 “thermal fluid 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 thermal fluid 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 thermal fluid 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, 6,333 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 30, 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 thermal fluid 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 thermal fluid system manufacturers are there based in the United States?

RevenueBase identified 374 thermal fluid 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?

Swagelok, headquartered in Solon, tops this list with the largest team on record.

Which city has the most thermal fluid system manufacturers?

Houston leads with 16 headquartered companies, followed by Tulsa (15) and Cincinnati (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 6,333 verified decision-maker contacts tracked across these 374 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 30, 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.