Company lists · Data refreshed September 2026
Top 25 Ac companies based in Germany
RevenueBase identified 1,079 ac companies headquartered in Germany as of September 2026 and tracks 16,010 professional contacts across them, including 2,707 with verified work emails. Hamburg is the largest hub.
This list covers ac companies 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 21, 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.
The 25 largest ac companies based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,061 contacts → | ||||
Indirect evidence “Founded in 1917 as a heating technology manufacturer, today Viessmann Climate Solutions is a leading global provider of sustainable climate (heating, cooling, water and air…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,028 contacts → | ||||
Indirect evidence “FläktGroup, a Samsung company, is a leader in air technology, delivering best in class, innovative and energy-efficient HVAC solutions, whilst reducing customer’s carbon footprint.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 748 contacts → | ||||
Indirect evidence “Since it was founded in 1947, the STULZ company has evolved into one of the world’s leading system suppliers of air-conditioning technology.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 484 contacts → | ||||
Indirect evidence “As a leading supplier of heating and air handling systems, we are perfectly in tune with you.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 470 contacts → | ||||
Indirect evidence “As an independent specialist for refrigeration, air conditioning and heat pump technology, BITZER is present all over the world: with products and services for refrigeration, air…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 400 contacts → | ||||
Indirect evidence “The art of handling air.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 275 contacts → | ||||
Indirect evidence “Mit Systemlösungen zum energieeffizienten Heizen, Kühlen und Lüften arbeitet KERMI täglich daran, einen nachhaltigen Wandel zu erzeugen – und das bereits seit über sechs…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 253 contacts → | ||||
Indirect evidence “DAIKIN ist weltweit führender Hersteller von Wärmepumpen, Lüftungs- und Klimatisierungssystemen.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 135 contacts → | ||||
Indirect evidence “ELMATIC ist ein erfolgreiches Dienstleistungsunternehmen der Gebäudetechnik für gewerbliche und industrielle Kunden.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 108 contacts → | ||||
Indirect evidence “DKA - Ihr Spezialist für kälte- und klimatechnische Anlagen seit 1953 Dresdner Kühlanlagenbau GmbH (DKA) ist mit über 500 Mitarbeiterinnen und Mitarbeitern der größte…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 95 contacts → | ||||
Indirect evidence “OUR PRODUCTS FOR INDUSTRY, TRADE AND COMFORT AT HOME Trotec develops, manufactures and sells optimally matched technology ranging from air conditioning to suitable tools.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 89 contacts → | ||||
Indirect evidence “Worldwide # 1 in turnkey cooling and heating solutions!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 78 contacts → | ||||
Indirect evidence “Swegon offers” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 77 contacts → | ||||
Indirect evidence “Die BerlinerLuft Technik GmbH in Berlin ist einer der führenden Komplett- und Systemanbieter von Produkten der Luft- und Klima, und Prozesslufttechnik.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 70 contacts → | ||||
Indirect evidence “Die Frigotechnik Handels-GmbH ist seit 1928 eines der führenden Großhandelsunternehmen für Kälte- und Klimatechnik mit Sitz in Hamburg.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 69 contacts → | ||||
Indirect evidence “Weiss Klimatechnik offers reliable climate solutions wherever people and machinery are challenged: in industrial production processes, hospitals, mobile operating tents or in the…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 67 contacts → | ||||
Indirect evidence “ENERGIEEFFIZIENZ NACH MASS.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 59 contacts → | ||||
Indirect evidence “LTG – Das Innovationsunternehmen Wir feiern ein Jahrhundert!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 57 contacts → | ||||
Indirect evidence “Menerga has been developing and producing innovative ventilation and air conditioning technology for diverse fields of application since 1980.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 45 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 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 42 contacts → | ||||
Indirect evidence “Die L&R Kältetechnik GmbH & Co.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 42 contacts → | ||||
Indirect evidence “Seco Kältetechnik GmbH is a company based out of 28 Herzogstraße, Bochum, Germany.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 40 contacts → | ||||
Indirect evidence “CENTROTEC SE is a listed company active in more than 50 countries specialized in energy-efficient building technology.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 39 contacts → | ||||
Indirect evidence “REMKO is a company specialising in heating and air conditioning technology, operating throughout Europe.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 38 contacts → | ||||
Indirect evidence “Käuffer steht für eine einzigartige Kombination aus Tradition und Innovation.” Source: RevenueBase Database · checked Sep 21, 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: ac 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 ac companies.
- Partial evidence
- Its own public description names part of ac companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name ac 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 1,079 ac companies based in Germany
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Ac companies based in Germany at a glance
As of Sep 21, 2026Companies by employee count
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 1,079 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 ac 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 Germany whose own description of what they do matches “ac 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 ac 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 ac companies, 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, 2,707 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 21, 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.
Ac companies by metro
- Ac companies in Hamburg31
- Ac companies in Berlin29
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 ac 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 ac companies are there based in Germany?
RevenueBase identified 1,079 ac companies 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?
Viessmann Climate Solutions, headquartered in Allendorf, tops this list with the largest team on record.
Which city has the most ac companies?
Hamburg leads with 31 headquartered companies, followed by Berlin (29) and Dusseldorf (12).
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 2,707 verified decision-maker contacts tracked across these 1,079 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 21, 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.
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