Company lists · Data refreshed September 2026

Top 25 Industrial waste heat recovery companies based in the United States

Name: Industrial waste heat recovery 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 203 companies tracked

RevenueBase identified 203 industrial waste heat recovery companies headquartered in the United States as of September 2026 and tracks 5,231 professional contacts across them, including 1,909 with verified work emails. Tulsa is the largest hub.

This list covers industrial waste heat recovery 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

203Companies

5,231Contacts tracked

1,909Verified emails

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The 25 largest industrial waste heat recovery companies based in the United States

Ranked by team size

Top 25 of 203 industrial waste heat recovery 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 waste heat recovery 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	Evapco, INC	Partial evidence	Taneytown, MD, United StatesHQ checked Sep 17, 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 17, 2026
2	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
3	Conco Services LLC	Indirect evidence	Verona, PA, United StatesHQ checked Sep 17, 2026	201-500	299 contacts →
	Indirect evidence “Here at Conco, we are always looking for A Better Way.” Source: RevenueBase Database · checked Sep 17, 2026
4	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
5	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
6	Nooter Eriksen, INC	Strong evidence	St. Louis, MO, United StatesHQ checked Sep 17, 2026	201-500	198 contacts →
	Strong 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 17, 2026
7	Ljungström	Partial evidence	Wellsville, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	184 contacts →
	Partial 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
8	AKG Of America	Partial evidence	Mebane, NC, United StatesHQ checked Sep 17, 2026	1,001-5,000	169 contacts →
	Partial evidence “Since 1919, the AKG Group has been a leading manufacturer of heat exchangers.” Source: RevenueBase Database · checked Sep 17, 2026
9	Hudson Products Corporation	Indirect evidence	Beasley, TX, United StatesHQ checked Sep 17, 2026	201-500	153 contacts →
	Indirect evidence “Since 1939, Hudson Products Corp.” Source: RevenueBase Database · checked Sep 17, 2026
10	Clayton Industries	Partial evidence	City Of Industry, CA, United StatesHQ checked Sep 17, 2026	51-200	132 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
11	WCR Heat Exchangers	Partial evidence	Fairborn, OH, United StatesHQ checked Sep 17, 2026	201-500	130 contacts →
	Partial 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 17, 2026
12	Brask, INC	Indirect evidence	Pearland, TX, United StatesHQ checked Sep 17, 2026	201-500	113 contacts →
	Indirect evidence “Brask Inc specializes in providing engineering design, and fabrication services for complete exchangers, replacement parts, ASME Code Modifications, API 510 Repairs, new bundles…” Source: RevenueBase Database · checked Sep 17, 2026
13	Renewaire, LLC	Partial evidence	Waunakee, WI, United StatesHQ checked Sep 17, 2026	51-200	91 contacts →
	Partial evidence “For over 40 years, RenewAire has been manufacturing energy recovery ventilators (ERVs) and dedicated outdoor air systems (DOAS).” Source: RevenueBase Database · checked Sep 17, 2026
14	Hrst, INC	Strong evidence	Minnetonka, MN, United StatesHQ checked Sep 17, 2026	51-200	80 contacts →
	Strong evidence “We are a power plant technical services and products company specializing in Heat Recovery Steam Generators (HRSGs), waste heat boilers and smaller gas/oil-fired power boilers.” Source: RevenueBase Database · checked Sep 17, 2026
15	Thermal Care, INC	Indirect evidence	Niles, IL, United StatesHQ checked Sep 17, 2026	51-200	79 contacts →
	Indirect evidence “We are the industry expert and value leader in process heating and cooling solutions.” Source: RevenueBase Database · checked Sep 17, 2026
16	Process Combustion Corporation PCC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 17, 2026	11-50	75 contacts →
	Indirect evidence “PCC’s mission is to apply our know-how with confidence to design, supply and service high-tech, energy-efficient, dependable combustion and pollution control systems that provide…” Source: RevenueBase Database · checked Sep 17, 2026
17	Turbotec Products, INC	Partial evidence	Newton, NC, United StatesHQ checked Sep 17, 2026	51-200	75 contacts →
	Partial evidence “Turbotec, an OEM manufacturer and established, specialist engineering business, produces a diverse range of high performance heat exchangers for virtually any space conditioning…” Source: RevenueBase Database · checked Sep 17, 2026
18	BD Energy Systems, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	65 contacts →
	Indirect evidence “BD Energy Systems LLC located in Houston, TX, USA is a world leading engineering company operating in the Petrochemical, Fertilizer, Refining, and Gas Processing industry…” Source: RevenueBase Database · checked Sep 17, 2026
19	Envirosep	Strong evidence	Georgetown, SC, United StatesHQ checked Sep 17, 2026	51-200	62 contacts →
	Strong evidence “Envirosep Company Overview: Envirosep designs and manufactures integrated solutions for fluid handling, heat transfer and energy recovery.” Source: RevenueBase Database · checked Sep 17, 2026
20	Dunn Heat Exchangers INC	Partial evidence	Texas City, TX, United StatesHQ checked Sep 17, 2026	51-200	57 contacts →
	Partial evidence “Dunn Heat Exchangers, Inc.'s heat exchanger cleaning services are unmatched in the industry.” Source: RevenueBase Database · checked Sep 17, 2026
21	Kemco Systems	Indirect evidence	Clearwater, FL, United StatesHQ checked Sep 17, 2026	51-200	55 contacts →
	Indirect evidence “Kemco Systems, a CECO Environmental Brand, designs and manufactures energy and water conservation systems for Water Reuse/Recycle, Wastewater Treatment, Wastewater Filtration…” Source: RevenueBase Database · checked Sep 17, 2026
22	Thermalnetics	Partial evidence	Auburn Hills, MI, United StatesHQ checked Sep 17, 2026	51-200	53 contacts →
	Partial evidence “ThermalNetics, a member of Daikin Group, is on the leading edge of energy recovery and environmentally responsible heating and cooling.” Source: RevenueBase Database · checked Sep 17, 2026
23	XETEX	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	201-500	53 contacts →
	Indirect evidence “Helping buildings breathe better.” Source: RevenueBase Database · checked Sep 17, 2026
24	Airjoule	Indirect evidence	Newark, DE, United StatesHQ checked Sep 17, 2026	11-50	50 contacts →
	Indirect evidence “AirJoule is a leader in the global sustainability transition.” Source: RevenueBase Database · checked Sep 17, 2026
25	Diversified Heat Transfer DHT	Strong evidence	Towaco, NJ, United StatesHQ checked Sep 17, 2026	51-200	47 contacts →
	Strong evidence “Diversified Heat Transfer (DHT), is a leading engineering and manufacturing company of heat exchange equipment and systems for the residential, commercial, and industrial markets.” 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 waste heat recovery 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 waste heat recovery companies.
Partial evidence: Its own public description names part of industrial waste heat recovery companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial waste heat recovery 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 203 industrial waste heat recovery companies based in the United States

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Industrial waste heat recovery companies based in the United States at a glance

As of Sep 17, 2026

36.5%Verified-email coverage

25.8Average contacts per company

11-50Median size (employees)

6.4%Largest-city concentration · Tulsa

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

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 203 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 waste heat recovery 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 waste heat recovery 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 waste heat recovery 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 waste heat recovery 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, 1,909 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 waste heat recovery 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 waste heat recovery companies are there based in the United States?

RevenueBase identified 203 industrial waste heat recovery 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?

Evapco, INC, headquartered in Taneytown, tops this list with the largest team on record.

Which city has the most industrial waste heat recovery companies?

Tulsa leads with 13 headquartered companies, followed by Houston (8) and Pittsburgh (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 1,909 verified decision-maker contacts tracked across these 203 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.