Company lists · Data refreshed September 2026

Top 25 Heat pump installation companies based in Germany

Name: Heat pump installation companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 292 companies tracked

RevenueBase identified 292 heat pump installation companies headquartered in Germany as of September 2026 and tracks 1,606 professional contacts across them, including 315 with verified work emails. Berlin is the largest hub.

This list covers heat pump installation 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 20, 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 20, 2026 86% judged on-target in blind review

292Companies

1,606Contacts tracked

315Verified emails

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The 25 largest heat pump installation companies based in Germany

Ranked by team size

Top 25 of 292 heat pump installation companies based in Germany, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to heat pump installation 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	Ait-Deutschland Gmbh	Strong evidence	Kasendorf, GermanyHQ checked Sep 20, 2026	1,001-5,000	86 contacts →
	Strong evidence “Heat pumps are part of our DNA 🧬 Our vision is an ideal tomorrow - independent of fossil energy sources You too can become part of ait Since 1998, we have been helping to protect…” Source: RevenueBase Database · checked Sep 20, 2026
2	VAMO	Indirect evidence	Cologne, GermanyHQ checked Sep 20, 2026	51-200	84 contacts →
	Indirect evidence “Wir bei Vamo haben es uns zur Mission gemacht grünes, günstiges Heizen mit Wärmepumpen unkompliziert und für jedermann möglich sowie bezahlbar zu machen.” Source: RevenueBase Database · checked Sep 20, 2026
3	Autarc YC S24	Strong evidence	Berlin, GermanyHQ checked Sep 20, 2026	11-50	40 contacts →
	Strong evidence “Accelerating the transition to low carbon homes by building the leading heat pump OS for HVAC installers” Source: RevenueBase Database · checked Sep 20, 2026
4	Envola	Indirect evidence	Ulm, GermanyHQ checked Sep 20, 2026	11-50	37 contacts →
	Indirect evidence “The Envola System is an innovative, holistic and most sustainable approach to enable smart and efficient HVAC solutions for buildings.” Source: RevenueBase Database · checked Sep 20, 2026
5	Wegatech	Indirect evidence	Köln, GermanyHQ checked Sep 20, 2026	51-200	37 contacts →
	Indirect evidence “heimWatt hat Ende Januar 2025 u.a.” Source: RevenueBase Database · checked Sep 20, 2026
6	Waterkotte Gmbh	Indirect evidence	Herne, GermanyHQ checked Sep 20, 2026	51-200	32 contacts →
	Indirect evidence “Die WATERKOTTE GmbH ist mit über 50 Jahren Erfahrung als Hersteller nachhaltiger Energiesysteme auf Basis der Wärmepumpe ein Pionier der Branche.” Source: RevenueBase Database · checked Sep 20, 2026
7	Calor Energy	Indirect evidence	Hamburg, GermanyHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect evidence “CALOR ENERGY is a Germany-wide partner for integrated and economically viable energy solutions across residential real estate, commercial properties, and private investment…” Source: RevenueBase Database · checked Sep 20, 2026
8	Bundesverband Wärmepumpe BWP E. V	Indirect evidence	Berlin, GermanyHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “Der Bundesverband Wärmepumpe (BWP) e.V.” Source: RevenueBase Database · checked Sep 20, 2026
9	Nuuenergy	Indirect evidence	Munich, GermanyHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “nuuEnergy unterstützt Sie dabei, Ihre Heiztechnik klimafreundlich und zukunftssicher zu machen – mit moderner Wärmepumpentechnologie.” Source: RevenueBase Database · checked Sep 20, 2026
10	Hansetherm	Indirect evidence	Hamburg, GermanyHQ checked Sep 20, 2026	51-200	17 contacts →
	Indirect evidence “Muss klimafreundliches Heizen kompliziert sein?” Source: RevenueBase Database · checked Sep 20, 2026
11	Gross Energietechnik Gmbh	Indirect evidence	Muggensturm, GermanyHQ checked Sep 20, 2026	51-200	16 contacts →
	Indirect evidence “GROSS Energietechnik sind die Spezialist*innen für Heizung, Kälte, Klima, Lüftung, Sanitär und alternative Energietechnik z.B.” Source: RevenueBase Database · checked Sep 20, 2026
12	Qvantum Deutschland	Strong evidence	Kulmbach, GermanyHQ checked Sep 20, 2026	201-500	15 contacts →
	Strong evidence “Qvantum is an international industry that offers heat pumps for the next generation heating and cooling technologies that enables the decarbonization of our cities.” Source: RevenueBase Database · checked Sep 20, 2026
13	Benndorf UND Hildebrand Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 20, 2026	51-200	15 contacts →
	Indirect evidence “Zukunft hat bei uns Tradition!” Source: RevenueBase Database · checked Sep 20, 2026
14	Dimplex Deutschland	Indirect evidence	Kulmbach, GermanyHQ checked Sep 20, 2026	501-1,000	14 contacts →
	Indirect evidence “Sie suchen nachhaltige Lösungen zum Heizen, Kühlen, Lüften, zur Warmwasserbereitung oder Wärmerückgewinnung für Ihr Wohngebäude oder Ihre Gewerbeimmobilie?” Source: RevenueBase Database · checked Sep 20, 2026
15	RKS Retzbach Klima Service Gmbh	Indirect evidence	Garbsen, GermanyHQ checked Sep 20, 2026	51-200	14 contacts →
	Indirect evidence “Seit über 30 Jahren sind wir der zuverlässige Partner für innovative Lösungen in der Wärmepumpen, Lüftungs, Kälte- und Klimatechnik.” Source: RevenueBase Database · checked Sep 20, 2026
16	Wibau Haustechnik Gmbh	Indirect evidence	Schwerin, GermanyHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
17	Bärenkälte Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 20, 2026	51-200	13 contacts →
	Indirect evidence “Bärenkälte – Ihr Spezialist für Kälte, Klima- und Wärmepumpentechnik in Norddeutschland.” Source: RevenueBase Database · checked Sep 20, 2026
18	Dekarbo	Indirect evidence	Hilden, GermanyHQ checked Sep 20, 2026	11-50	11 contacts →
	Indirect evidence “Mit dekarbo° unterstützen wir Wohnungsunternehmen bei der Dekarbonisierung ihres Gebäudebestands mit einfachen, schnellen und effizienten Wärmepumpenlösungen.” Source: RevenueBase Database · checked Sep 20, 2026
19	Matari Gmbh	Indirect evidence	Ahrensburg, GermanyHQ checked Sep 20, 2026	51-200	10 contacts →
	Indirect evidence “Energielösungen und Heizsysteme von Matari: Für Ihre Zukunft Unsere Mission ist es, die Häuser und Hallen in unserer Region mit grüner, günstiger Energie und Wärme zu versorgen…” Source: RevenueBase Database · checked Sep 20, 2026
20	H. Maurer Gmbh & Co. KG	Indirect evidence	Schramberg, GermanyHQ checked Sep 20, 2026	51-200	9 contacts →
	Indirect evidence “Heizung - Klima - Sanitär” Source: RevenueBase Database · checked Sep 20, 2026
21	Wärme MIT Konzept	Indirect evidence	Monheim, GermanyHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence “Die Wärme mit Konzept GmbH bietet innovative und nachhaltige Heizlösungen, die nicht nur für Neubauten, sondern auch für Bestandsobjekte ideal sind – und das ohne große…” Source: RevenueBase Database · checked Sep 20, 2026
22	Giedorf	Indirect evidence	Neuss, GermanyHQ checked Sep 20, 2026	51-200	8 contacts →
	Indirect evidence “GIEDORF ist regionaler Meisterbetrieb und Fullservice-Anbieter für Wärmepumpen, Photovoltaiklösungen, Stromspeicher, Klimaanlagen und Energie-Management-Systeme – für Eigenheime…” Source: RevenueBase Database · checked Sep 20, 2026
23	Barella Gebäude- UND Energietechnik Gmbh	Indirect evidence	Bad Sassendorf, GermanyHQ checked Sep 20, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
24	Wbmax Gmbh	Indirect evidence	Frankfurt, GermanyHQ checked Sep 20, 2026	51-200	7 contacts →
	Indirect evidence “Wbmax GmbH delivers reliable and efficient heating, ventilation, plumbing, and electrical solutions to ensure comfortable, safe, and efficient spaces.” Source: RevenueBase Database · checked Sep 20, 2026
25	Enpal Dragon	Indirect evidence	Berlin, GermanyHQ checked Sep 20, 2026	51-200	6 contacts →
	Indirect evidence “Saubere Energie und Wärme für alle - das ist unser Traum bei Enpal.” Source: RevenueBase Database · checked Sep 20, 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: heat pump installation 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 pump installation companies.
Partial evidence: Its own public description names part of heat pump installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name heat pump installation 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 292 heat pump installation companies based in Germany

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Heat pump installation companies based in Germany at a glance

As of Sep 20, 2026

19.6%Verified-email coverage

5.5Average contacts per company

1-10Median size (employees)

5.5%Largest-city concentration · Berlin

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

150

11-50

51-200

201-500

501-1,000

1,001-5,000

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 292 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 heat pump installation 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 “heat pump installation 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 pump installation 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 pump installation 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, 315 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.

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 pump installation 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 pump installation companies are there based in Germany?

RevenueBase identified 292 heat pump installation 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?

Ait-Deutschland Gmbh, headquartered in Kasendorf, tops this list with the largest team on record.

Which city has the most heat pump installation companies?

Berlin leads with 16 headquartered companies, followed by Hamburg (8) and Koln (4).

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 315 verified decision-maker contacts tracked across these 292 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.