Company lists · Data refreshed September 2026
Top 25 Waste heat recovery systems worldwide
RevenueBase identified 419 waste heat recovery systems worldwide as of September 2026 and tracks 6,149 professional contacts across them, including 1,585 with verified work emails. The United States is the largest market and Pune the largest hub.
This list covers waste heat recovery systems worldwide, 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 22, 2026. Country and city lists for waste heat recovery systems follow the table.
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.
The 25 largest waste heat recovery systems worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 662 contacts → | ||||
Indirect evidence “The Hamon Group does not exist anymore.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 595 contacts → | ||||
Indirect evidence “At Harris Pye, everything we do saves energy.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 277 contacts → | ||||
Indirect evidence “Heurtey Petrochem Solutions is a world leader in process furnaces for refining, petrochemicals, syngas and hydrogen markets.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 230 contacts → | ||||
Strong evidence “Thermal Systems (TSPL) is a fast growing ISO 9001 certified heavy engineering company engaged in Waste Heat Recovery solutions around the world.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 96 contacts → | ||||
Strong evidence “We are a company dedicated to the design and supply of equipment, plants and technologies for heat recovery, air or gases heating, incineration, VOC's abatement and industrial…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 91 contacts → | ||||
Strong evidence “For over 40 years, RenewAire has been manufacturing energy recovery ventilators (ERVs) and dedicated outdoor air systems (DOAS).” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 76 contacts → | ||||
Strong evidence “Orcan Energy develops, produces, distributes and finances energy modules for the conversion of waste heat into clean and cheap electricity and constructs them on a turnkey basis…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 75 contacts → | ||||
Partial 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 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 63 contacts → | ||||
Indirect evidence “Heatex is a leading cleantech company that optimizes and develops energy-saving thermodynamic products and solutions, contributing to a sustainable future.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 61 contacts → | ||||
Partial evidence “We are CORE – technology leader in energy recovery.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 60 contacts → | ||||
Indirect evidence “AIT STEIN: empowering industrial energy transition.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 58 contacts → | ||||
Partial evidence “We are the market leader and developer of high-efficiency, indirect heat exchange technology for the heating, cooling and drying of free-flowing granular materials such as solid…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 58 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 52 contacts → | ||||
Strong evidence “CTP Team is an international engineering and manufacturing company with over 50 years of experience in the fields of filtration, gas cleaning, heat exchangers, and waste heat…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 50 contacts → | ||||
Indirect evidence “Thermal Energy International is a cleantech company and fully accredited professional engineering firm.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 45 contacts → | ||||
Indirect evidence “Welcome to ENERVEX.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 41 contacts → | ||||
Indirect evidence “Rosink-Werkstätten GmbH - weltweit erfolgreich Rosink-Werkstätten entwickelt und produziert seit 1980 Wärmetauscher und Wärmerückgewinnungsanlagen für den weltweiten Einsatz in…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 38 contacts → | ||||
Strong evidence “AITESA is an engineering company, which operates in the field of heat recovery systems (HRS) normally for refineries, chemical and petrochemical industries.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 37 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 37 contacts → | ||||
Strong evidence “FURNACE IMPROVEMENTS SERVICES (FIS) has been actively providing value-added solutions for Fired Heaters, Boilers, and Waste Heat Recovery Units to end-users around the world for…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 36 contacts → | ||||
Strong evidence “Urja Disha Boiler Technologies (UDBT) was established with a burning passion to provide technological services in the field of Steam Industries, Waste Heat Recovery Systems and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 35 contacts → | ||||
Strong evidence “Technology leader in fields of Waste Heat Recovery Boilers & Systems, Turnkey Waste Heat driven Power Plants, Process Boilers & Heaters, Zero Liquid Discharge Systems, Super…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 34 contacts → | ||||
Strong evidence “Waste heat recovery systems for converting industrial waste heat into steam and other forms of energy are at the heart of our portfolio.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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: waste heat recovery systems. 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 waste heat recovery systems.
- Partial evidence
- Its own public description names part of waste heat recovery systems, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name waste heat recovery systems. 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 419 waste heat recovery systems worldwide
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Waste heat recovery systems worldwide at a glance
As of Sep 22, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 waste heat recovery systems, 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.
- Coverage
- Every country. Country and city lists for waste heat recovery systems are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “waste heat recovery systems”. 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 waste heat recovery systems), 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 waste heat recovery systems, and records with no verified work email.
- 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, 1,585 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 22, 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.
Waste heat recovery systems by location
4 lists · largest firstEvery Waste heat recovery systems list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 waste heat recovery systems, 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 waste heat recovery systems are there worldwide?
RevenueBase identified 419 waste heat recovery systems worldwide 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?
Hamon Group, headquartered in Seraing, tops this list with the largest team on record.
Which country has the most waste heat recovery systems?
The United States leads with 61 companies, followed by Germany (35) and India (33). Every waste heat recovery systems list by country and city is linked on this page.
Which city has the most waste heat recovery systems?
Pune leads with 13 headquartered companies, followed by Tulsa (7) and Calgary (3).
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 1,585 verified decision-maker contacts tracked across these 419 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 22, 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.