Company lists · Data refreshed September 2026

Top 25 Thermal management system manufacturers based in Germany

RevenueBase identified 63 thermal management system manufacturers headquartered in Germany as of September 2026 and tracks 5,260 professional contacts across them, including 1,534 with verified work emails. Hofgeismar is the largest hub.

This list covers thermal management system manufacturers headquartered in Germany, 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 19, 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 19, 2026 86% judged on-target in blind review
63Companies
5,260Contacts tracked
1,534Verified emails
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The 25 largest thermal management system manufacturers based in Germany

Ranked by team size
Top 25 of 63 thermal management system manufacturers based in Germany, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to thermal management system manufacturers: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceHerne, GermanyHQ checked Sep 19, 20265,001-10,0002,005 contacts →

Indirect evidence

“Welcome to Kelvion!”

Source: RevenueBase Database · checked Sep 19, 2026
2Partial evidenceHofgeismar, GermanyHQ checked Sep 19, 20261,001-5,000223 contacts →

Partial evidence

Manufacturer of coolers and heat exchangers worldwide Development and production of high-performance heat exchangers and complete cooling modules for application in construction…”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceHamburg, GermanyHQ checked Sep 19, 2026201-500171 contacts →

Indirect evidence

“Our employees at 10 locations all over the world are always committed to our customers and their needs in everything they do.”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceRadevormwald, GermanyHQ checked Sep 19, 2026201-50097 contacts →

Partial evidence

“Seifert Systems ventilates, cools, dehumidifies, heats, controls and illuminates control cabinets for the industry, telecommunication and medical sector as well as for challenging…”

Source: RevenueBase Database · checked Sep 19, 2026
5Strong evidenceLüdenscheid, GermanyHQ checked Sep 19, 2026201-50056 contacts →

Strong evidence

“The leading manufacturer of heatsinks, thermal conductive materials, cases and connectors.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceFurstenfeldbruck, GermanyHQ checked Sep 19, 20261,001-5,00045 contacts →

Indirect evidence

“SOLVE TOMORROW'S CHALLENGES TODAY At Güntner, we combine maximum precision in everyday life with a vision for the future in order to provide our partners with the best possible…”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceSundern, GermanyHQ checked Sep 19, 202651-20042 contacts →

Indirect evidence

“Die L&R Kältetechnik GmbH & Co.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceHochdorf, GermanyHQ checked Sep 19, 202651-20042 contacts →

Indirect evidence

“SINGLE is driven to improve the production conditions of its customers in their various industries ranging from automotive to medical life science, food, semiconducters, chemicals…”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceKrunkel, GermanyHQ checked Sep 19, 2026201-50041 contacts →

Indirect evidence

“HYFRA is an experienced specialist in customized process cooling with more than 40 years of expertise in industrial cooling technology.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceGroßbreitenbach, GermanyHQ checked Sep 19, 202651-20017 contacts →

Indirect evidence

“Engineering-driven cooling solutions for electronics & mechanics.”

Source: RevenueBase Database · checked Sep 19, 2026
11Partial evidenceKirchheim Unter Teck, GermanyHQ checked Sep 19, 202651-20015 contacts →

Partial evidence

“With comprehensive expertise, we partner closely with our customers to develop and deliver custom-tailored heatmanagement solutions globally through a manufacturer-independent…”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidencePlettenberg, GermanyHQ checked Sep 19, 2026201-50015 contacts →

Indirect evidence

“Die Junior Kühlkörper GmbH ist Ihr zuverlässiger B2B-Partner für maßgeschneiderte Kühlkörper-Lösungen im Bereich der Leistungselektronik.”

Source: RevenueBase Database · checked Sep 19, 2026
13Strong evidenceKulmbach, GermanyHQ checked Sep 19, 2026501-1,00013 contacts →

Strong evidence

“Riedel Kooling is an innovative manufacturer of cooling systems with more than 50 years of experience in cooling technology.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceBrunswick, GermanyHQ checked Sep 19, 202651-20013 contacts →

Indirect evidence

“We are on a mission to make liquid-cooling as simple and sustainable as possible for any customer by thinking like a buyer (not a supplier) and continuously elevating industry…”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceWilsdruff, GermanyHQ checked Sep 19, 202651-20012 contacts →

Indirect evidence

“LWN Lufttechnik GmbH is a company based out of Wilsdruff, Germany.”

Source: RevenueBase Database · checked Sep 19, 2026
16Partial evidenceNettetal, GermanyHQ checked Sep 19, 202611-5011 contacts →

Partial evidence

“Die CTX Thermal Solutions GmbH ist ein Spezialist für anwendungsspezifische und standardisierte Kühllösungen zur Kühlung elektronischer Bauteile, insbesondere für Kühlkörper und…”

Source: RevenueBase Database · checked Sep 19, 2026
17Partial evidenceLeutkirch Im Allgäu, GermanyHQ checked Sep 19, 202611-5011 contacts →

Partial evidence

“Viele elektronische Systeme stoßen früher oder später an eine kritische Grenze – Wärme.”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceWürselen, GermanyHQ checked Sep 19, 202611-5010 contacts →

Indirect evidence

“Heating, cooling and ventilation The Jaga “convector” has never been an ordinary radiator and now evolves into a climate cooler.”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceEschbach, GermanyHQ checked Sep 19, 202611-508 contacts →

Indirect evidence

“Welcome to SEPA EUROPE, your partner for electronic components and services.”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceBaiernrain, GermanyHQ checked Sep 19, 20261-108 contacts →

Indirect evidence

“We make things work"- in German: Doesn't work - doesn't exist.”

Source: RevenueBase Database · checked Sep 19, 2026
21Indirect evidenceBaden-baden, GermanyHQ checked Sep 19, 202611-508 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
22Partial evidenceKirchentellinsfurt, GermanyHQ checked Sep 19, 202611-507 contacts →

Partial evidence

“Our mission is Thermo-Engineering TheSys is an engineering company that specializes in providing thermal solutions for road and off-road vehicles.”

Source: RevenueBase Database · checked Sep 19, 2026
23Indirect evidenceDuisburg, GermanyHQ checked Sep 19, 20261-107 contacts →

Indirect evidence

“Leffek Industrie GmbH is a company based out of Duisburg, Germany.”

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceEnnepetal, GermanyHQ checked Sep 19, 202651-2006 contacts →

Indirect evidence

“As a powerful partner for a wide range of industries, we now offer a variety of profiles ranging from standard heat sinks to individually machined special profiles.”

Source: RevenueBase Database · checked Sep 19, 2026
25Indirect evidenceRülzheim, GermanyHQ checked Sep 19, 20261-104 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 63 thermal management system manufacturers based in Germany

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Thermal management system manufacturers based in Germany at a glance

As of Sep 19, 2026
29.2%Verified-email coverage
83.5Average contacts per company
51-200Median size (employees)
4.8%Largest-city concentration · Hofgeismar
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
13
51-200
15
201-500
9
501-1,000
1
1,001-5,000
6
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 63 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 thermal management system manufacturers, 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 Germany whose own description of what they do matches “thermal management system manufacturers”. 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 thermal management system manufacturers), 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 thermal management system manufacturers, and records with no verified work email. Companies headquartered outside Germany 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, 1,534 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 19, 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 thermal management system manufacturers, 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 thermal management system manufacturers are there based in Germany?

RevenueBase identified 63 thermal management system manufacturers headquartered in Germany 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?

Kelvion, headquartered in Herne, tops this list with the largest team on record.

Which city has the most thermal management system manufacturers?

Hofgeismar leads with 3 headquartered companies, followed by Berlin (2) and Furstenfeldbruck (2).

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 1,534 verified decision-maker contacts tracked across these 63 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 19, 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.