Company lists · Data refreshed September 2026
Top 25 Heat recovery system companies worldwide
RevenueBase identified 883 heat recovery system companies worldwide as of September 2026 and tracks 13,847 professional contacts across them, including 3,752 with verified work emails. The United States is the largest market and Pune the largest hub.
This list covers heat recovery system companies 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 20, 2026. Country and city lists for heat recovery system companies 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 heat recovery system companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 662 contacts → | ||||
Indirect evidence “The Hamon Group does not exist anymore.” Source: RevenueBase Database · checked Sep 20, 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 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 471 contacts → | ||||
Strong evidence “Engineered Air is one of North America's largest manufacturers of Heating, Air Conditioning, Ventilation, Refrigeration, Energy Recovery and Heat Transfer Products.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 209 contacts → | ||||
Strong evidence “Vogt Power International Inc, headquartered in Louisville, Kentucky, is a global leader in the design, manufacturing, and supply of Heat Recovery Steam Generators (HRSGs) and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 178 contacts → | ||||
Partial evidence “Annexair is a privately held North American company focused exclusively on designing and manufacturing high-quality, energy-efficient air handling systems.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 126 contacts → | ||||
Partial evidence “Brink Climate Systems is marktleider in ventilatie met warmteterugwinning, luchtverwarming en koeling.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 120 contacts → | ||||
Indirect evidence “Since we at APROVIS have been developing solutions that make energy more efficient, sustainable and reliable.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 112 contacts → | ||||
Partial evidence “BRÖTJE efficient heating system technology.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 76 contacts → | ||||
Indirect evidence “This company profile promotes : Danstoker A/S & Danstoker Poland Sp.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 72 contacts → | ||||
Indirect evidence “Seit über vier Jahrzehnten setzen Kunden auf innovative Energiespartechnik aus dem Hause ONI.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 69 contacts → | ||||
Partial evidence “Your trusted heat exchanger manufacturer - From first principles to lasting partnerships Heat exchanger manufacturer since 1904, we design and produce to custom specifications.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 66 contacts → | ||||
Strong evidence “Energy Recovery & Ventilation Components Counterflow Plate Heat Exchanger Counterflow Kombi Plate Heat Exchanger Rotary Heat Exchanger Crossflow Heat Exchanger Accuair Enthalpy…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 66 contacts → | ||||
Indirect evidence “ICE has been a HVAC manufacturer with two facilities in Canada with one in Winnipeg (since 1961) and Calgary (since 1991) and one in the USA, Tennessee (since 1993).” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 65 contacts → | ||||
Partial 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 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 64 contacts → | ||||
Strong evidence “Tecogen is a leading manufacturer of Combined Heat and Power products including natural gas engine-driven cogeneration, air conditioning systems and high efficiency water heaters…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 63 contacts → | ||||
Strong evidence “ATREA is an international holding company, focused on ventilation with heat recovery.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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 20, 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: heat recovery system 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 heat recovery system companies.
- Partial evidence
- Its own public description names part of heat recovery system companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name heat recovery system 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 883 heat recovery system companies worldwide
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Heat recovery system companies worldwide at a glance
As of Sep 20, 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 heat recovery system 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.
- Coverage
- Every country. Country and city lists for heat recovery system companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “heat recovery system 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 heat recovery system 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 heat recovery system companies, 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, 3,752 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 20, 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.
Heat recovery system companies by location
8 lists · largest firstEvery Heat recovery system companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Heat recovery system companies based in the United States108
- Heat recovery system companies based in Germany82
- Heat recovery system companies based in the United Kingdom74
- Heat recovery system companies based in India49
- Heat recovery system companies based in Italy47
- Heat recovery system companies based in France45
- Heat recovery system companies based in Canada39
- Heat recovery system companies based in the Netherlands30
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 heat recovery system 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 heat recovery system companies are there worldwide?
RevenueBase identified 883 heat recovery system companies 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 heat recovery system companies?
The United States leads with 108 companies, followed by Germany (82) and the United Kingdom (74). Every heat recovery system companies list by country and city is linked on this page.
Which city has the most heat recovery system companies?
Pune leads with 12 headquartered companies, followed by London (8) and Tulsa (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 3,752 verified decision-maker contacts tracked across these 883 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 20, 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.