Company lists · Data refreshed September 2026

Top 25 Industrial thermal processing companies based in the United States

Name: Industrial thermal processing companies 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 502 companies tracked

RevenueBase identified 502 industrial thermal processing companies headquartered in the United States as of September 2026 and tracks 11,575 professional contacts across them, including 4,260 with verified work emails. Houston is the largest hub.

This list covers industrial thermal processing companies 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

502Companies

11,575Contacts tracked

4,260Verified emails

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The 25 largest industrial thermal processing companies based in the United States

Ranked by team size

Top 25 of 502 industrial thermal processing companies 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 thermal processing companies: 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	Thermon	Strong evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	901 contacts →
	Strong 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 17, 2026
2	Chromalox	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	635 contacts →
	Partial evidence “When industrial operations depend on heat that simply cannot fail, Chromalox brings unmatched technical knowledge and high‑performance electric heating solutions that stand the…” Source: RevenueBase Database · checked Sep 17, 2026
3	Superheat	Indirect evidence	New Lenox, IL, United StatesHQ checked Sep 17, 2026	501-1,000	376 contacts →
	Indirect evidence “Superheat was founded on the principle that cutting-edge technology can offer a Better.” Source: RevenueBase Database · checked Sep 17, 2026
4	Inductotherm Group	Indirect evidence	Rancocas, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	375 contacts →
	Indirect evidence “WE BRING HEAT TO METAL.” Source: RevenueBase Database · checked Sep 17, 2026
5	Horton, INC	Strong evidence	Roseville, MN, United StatesHQ checked Sep 17, 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 17, 2026
6	Eisenmann INC	Indirect evidence	Greenville, SC, United StatesHQ checked Sep 17, 2026	501-1,000	241 contacts →
	Indirect evidence “Eisenmann is a leading international technology provider for custom-designed surface finishing, material flow automation, environmental as well as process & high-temperature…” Source: RevenueBase Database · checked Sep 17, 2026
7	Ajaxtocco Magnethermic	Partial evidence	Warren, OH, United StatesHQ checked Sep 17, 2026	201-500	234 contacts →
	Partial evidence “Ajax TOCCO Magnethermic® designs and manufactures world class induction heating and melting equipment for various industries and applications throughout the world.” Source: RevenueBase Database · checked Sep 17, 2026
8	BTU International	Strong evidence	Westford, MA, United StatesHQ checked Sep 17, 2026	201-500	218 contacts →
	Strong evidence “BTU International, a wholly-owned subsidiary of Amtech Group (Nasdaq: ASYS), is a global supplier and technology leader of advanced thermal processing equipment solutions in the…” Source: RevenueBase Database · checked Sep 17, 2026
9	Analytic Stress Relieving LLC	Indirect evidence	Lafayette, LA, United StatesHQ checked Sep 17, 2026	201-500	190 contacts →
	Indirect evidence “Analytic Stress made a commitment to quality, safety, and the customer when the company started in the Fall of 1979.” Source: RevenueBase Database · checked Sep 17, 2026
10	Advanced Cooling Technologies, INC	Partial evidence	Lancaster, PA, United StatesHQ checked Sep 17, 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 17, 2026
11	Therm-X, California	Partial evidence	Hayward, CA, United StatesHQ checked Sep 17, 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 17, 2026
12	Aalberts Surface Technologies	Strong evidence	St. Louis, MO, United StatesHQ checked Sep 17, 2026	201-500	182 contacts →
	Strong evidence “Aalberts surface technologies - Paulo, delivers precision heat treating and thermal processing services that push the boundaries of what’s possible in metallurgical science.” Source: RevenueBase Database · checked Sep 17, 2026
13	Heatron	Partial evidence	Leavenworth, KS, United StatesHQ checked Sep 17, 2026	201-500	123 contacts →
	Partial evidence “Heatron's engineers are experts in thermal management.” Source: RevenueBase Database · checked Sep 17, 2026
14	Bluewater Thermal Solutions	Partial evidence	Greenville, SC, United StatesHQ checked Sep 17, 2026	201-500	123 contacts →
	Partial evidence “Bluewater Thermal Solutions (BTS) is the largest commercial thermal solutions provider based in North America.” Source: RevenueBase Database · checked Sep 17, 2026
15	Therma-Tron-X, Inc. TTX	Strong evidence	Sturgeon Bay, WI, United StatesHQ checked Sep 17, 2026	201-500	119 contacts →
	Strong evidence “Therma-Tron-X, a family owned and operated company, was founded in 1969 as a manufacturer of custom-built industrial ovens.” Source: RevenueBase Database · checked Sep 17, 2026
16	Consarc Corporation	Indirect evidence	Rancocas, NJ, United StatesHQ checked Sep 17, 2026	51-200	114 contacts →
	Indirect evidence “We have considerable experience in supplying custom-built equipment to suit highly specialized or individual requirements, enabling us to provide a comprehensive service and…” Source: RevenueBase Database · checked Sep 17, 2026
17	Solar Atmospheres, INC	Indirect evidence	Souderton, PA, United StatesHQ checked Sep 17, 2026	201-500	109 contacts →
	Indirect evidence “Solar Atmospheres is one of the world’s largest providers of commercial vacuum heat treating services.” Source: RevenueBase Database · checked Sep 17, 2026
18	Despatch - ITW EAE	Strong evidence	Lakeville, MN, United StatesHQ checked Sep 17, 2026	51-200	109 contacts →
	Strong evidence “Despatch is a member of ITW EAE, a division of Illinois Tools Works, Inc, and has specialized in thermal processing for over 100 years and is actively using this technical…” Source: RevenueBase Database · checked Sep 17, 2026
19	Hydro-Thermal Corporation	Partial evidence	Waukesha, WI, United StatesHQ checked Sep 17, 2026	51-200	108 contacts →
	Partial 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 17, 2026
20	Industrial Thermal Services, LLC	Indirect evidence	Nederland, TX, United StatesHQ checked Sep 17, 2026	51-200	108 contacts →
	Indirect evidence “Taking the stress out of your project.” Source: RevenueBase Database · checked Sep 17, 2026
21	Alkar INC	Strong evidence	Lodi, WI, United StatesHQ checked Sep 17, 2026	51-200	108 contacts →
	Strong evidence “ALKAR manufactures the world’s most extensive line of Continuous Thermal Meat Processing Systems for cooking, smoking, chilling and pasteurization.” Source: RevenueBase Database · checked Sep 17, 2026
22	Thermal Product Solutions	Strong evidence	New Columbia, PA, United StatesHQ checked Sep 17, 2026	51-200	107 contacts →
	Strong evidence “Thermal Product Solutions (TPS) designs and manufactures industrial and laboratory ovens and furnaces, and environmental temperature cycling and stability test chambers.” Source: RevenueBase Database · checked Sep 17, 2026
23	Retech A Seco Warwick Company	Strong evidence	Buffalo, NY, United StatesHQ checked Sep 17, 2026	51-200	98 contacts →
	Strong evidence “Since 1963, Retech has been a global leader in the supply of metallurgical processing equipment for demanding industries in ever-changing markets.” Source: RevenueBase Database · checked Sep 17, 2026
24	Advanced Heat Treat Corp	Indirect evidence	Waterloo, IA, United StatesHQ checked Sep 17, 2026	51-200	88 contacts →
	Indirect evidence “Advanced Heat Treat Corp.(AHT) is a recognized leader in providing heat treat services and superior metallurgical solutions to companies across the globe.” Source: RevenueBase Database · checked Sep 17, 2026
25	Afc-Holcroft	Partial evidence	Wixom, MI, United StatesHQ checked Sep 17, 2026	51-200	86 contacts →
	Partial evidence “Global supplier of industrial Heat Treating Equipment, serving a variety of markets worldwide.” 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 thermal processing companies. 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 thermal processing companies.
Partial evidence: Its own public description names part of industrial thermal processing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial thermal processing companies. 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 502 industrial thermal processing companies based in the United States

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Industrial thermal processing companies based in the United States at a glance

As of Sep 17, 2026

36.8%Verified-email coverage

23.1Average contacts per company

11-50Median size (employees)

3.2%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

154

11-50

213

51-200

104

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 502 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 thermal processing companies, 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 thermal processing companies”. 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 thermal processing companies), 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 thermal processing companies, 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, 4,260 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 thermal processing companies, 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 thermal processing companies are there based in the United States?

RevenueBase identified 502 industrial thermal processing companies 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?

Thermon, headquartered in Austin, tops this list with the largest team on record.

Which city has the most industrial thermal processing companies?

Houston leads with 16 headquartered companies, followed by Cleveland (11) and Warren (7).

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 4,260 verified decision-maker contacts tracked across these 502 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.