Company lists · Data refreshed September 2026

Top 25 Industrial heating equipment suppliers based in the United States

Name: Industrial heating equipment suppliers 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 707 companies tracked

RevenueBase identified 707 industrial heating equipment suppliers headquartered in the United States as of September 2026 and tracks 21,940 professional contacts across them, including 7,094 with verified work emails. Houston is the largest hub.

This list covers industrial heating equipment suppliers 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

707Companies

21,940Contacts tracked

7,094Verified emails

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The 25 largest industrial heating equipment suppliers based in the United States

Ranked by team size

Top 25 of 707 industrial heating equipment suppliers 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 heating equipment suppliers: 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	Modine Manufacturing Company	Indirect evidence	Racine, WI, United StatesHQ checked Sep 17, 2026	10001+	2,927 contacts →
	Indirect evidence “Since 1916, Modine Manufacturing Company has applied innovative thermal technology to meet customer's needs.” Source: RevenueBase Database · checked Sep 17, 2026
2	Aaon, INC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,208 contacts →
	Partial evidence “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Source: RevenueBase Database · checked Sep 17, 2026
3	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
4	Chromalox	Strong evidence	Pittsburgh, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	635 contacts →
	Strong 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
5	Evapco, INC	Indirect evidence	Taneytown, MD, United StatesHQ checked Sep 17, 2026	1,001-5,000	569 contacts →
	Indirect 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 17, 2026
6	Mestek, INC	Strong evidence	Westfield, MA, United StatesHQ checked Sep 17, 2026	501-1,000	449 contacts →
	Strong evidence “Today, Mestek is a family of over 45 specialty manufacturers providing heating, ventilating, and air conditioning products, coil handling equipment, extruded aluminum products…” Source: RevenueBase Database · checked Sep 17, 2026
7	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
8	API Heat Transfer	Partial evidence	Buffalo, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	364 contacts →
	Partial 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 17, 2026
9	Graham Manufacturing	Strong evidence	Batavia, NY, United StatesHQ checked Sep 17, 2026	201-500	277 contacts →
	Strong evidence “Graham Manufacturing, a GHM Company, designs and builds vacuum and heat transfer equipment for process industries worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
10	Raypak	Indirect evidence	Oxnard, United StatesHQ checked Sep 17, 2026	501-1,000	242 contacts →
	Indirect evidence “For over 70 years, Raypak has been the world's leading manufacturer of copper finned boilers and heaters.” Source: RevenueBase Database · checked Sep 17, 2026
11	Ajaxtocco Magnethermic	Strong evidence	Warren, OH, United StatesHQ checked Sep 17, 2026	201-500	234 contacts →
	Strong 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
12	Durex Industries	Partial evidence	Cary, IL, United StatesHQ checked Sep 17, 2026	201-500	232 contacts →
	Partial evidence “Durex Industries has over 40 years of excellence in designing and manufacturing custom thermal solutions.” Source: RevenueBase Database · checked Sep 17, 2026
13	Thermal Engineering International USA INC	Partial evidence	La Palma, CA, United StatesHQ checked Sep 17, 2026	201-500	219 contacts →
	Partial evidence “At TEi, we help the power and process industries operate safely, sustainably, and without costly downtime.” Source: RevenueBase Database · checked Sep 17, 2026
14	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
15	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
16	Therm-X, California	Indirect evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	201-500	189 contacts →
	Indirect 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
17	Ljungström	Indirect evidence	Wellsville, NY, United StatesHQ checked Sep 17, 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 17, 2026
18	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
19	AKG Of America	Indirect evidence	Mebane, NC, United StatesHQ checked Sep 17, 2026	1,001-5,000	169 contacts →
	Indirect evidence “Since 1919, the AKG Group has been a leading manufacturer of heat exchangers.” Source: RevenueBase Database · checked Sep 17, 2026
20	Marley Engineered Products	Partial evidence	Bennettsville, SC, United StatesHQ checked Sep 17, 2026	201-500	167 contacts →
	Partial evidence “Marley Engineered Products® draws upon a long history of providing reliable comfort heating and ventilation solutions.” Source: RevenueBase Database · checked Sep 17, 2026
21	Bard Manufacturing Company, INC	Indirect evidence	Bryan, OH, United StatesHQ checked Sep 17, 2026	501-1,000	166 contacts →
	Indirect evidence “Bard Manufacturing is a fourth-generation family-owned business founded in 1914 in Bryan, Ohio.” Source: RevenueBase Database · checked Sep 17, 2026
22	Wolverine Tube, INC	Indirect evidence	Shawnee, OK, United StatesHQ checked Sep 17, 2026	501-1,000	159 contacts →
	Indirect 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 17, 2026
23	Process Technology	Partial evidence	Willoughby, OH, United StatesHQ checked Sep 17, 2026	201-500	142 contacts →
	Partial evidence “For over 45 years, Process Technology has enabled Semiconductor, Industrial, and Surface Finishing businesses to realize their full potential.” Source: RevenueBase Database · checked Sep 17, 2026
24	Petro-Chem Development Co., INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 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 17, 2026
25	ECR International	Indirect evidence	Utica, United StatesHQ checked Sep 17, 2026	201-500	126 contacts →
	Indirect evidence “ECR International, Inc.” 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 heating equipment suppliers. 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 heating equipment suppliers.
Partial evidence: Its own public description names part of industrial heating equipment suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial heating equipment suppliers. 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 707 industrial heating equipment suppliers based in the United States

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Industrial heating equipment suppliers based in the United States at a glance

As of Sep 17, 2026

32.3%Verified-email coverage

31.0Average contacts per company

11-50Median size (employees)

2.5%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

258

11-50

255

51-200

131

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 707 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 heating equipment suppliers, 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 heating equipment suppliers”. 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 heating equipment suppliers), 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 heating equipment suppliers, 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, 7,094 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 heating equipment suppliers, 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 heating equipment suppliers are there based in the United States?

RevenueBase identified 707 industrial heating equipment suppliers 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?

Modine Manufacturing Company, headquartered in Racine, tops this list with the largest team on record.

Which city has the most industrial heating equipment suppliers?

Houston leads with 18 headquartered companies, followed by Tulsa (14) and Warren (8).

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 7,094 verified decision-maker contacts tracked across these 707 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.