Company lists · Data refreshed November 2026

Top 25 Closed loop heat pump companies based in Germany

RevenueBase identified 91 company matches for closed loop heat pump companies associated with Germany as of November 2026 and tracks 1,102 professional contacts across them, including 382 with verified work emails. Berlin is the largest hub.

This list covers company matches for closed loop heat pump companies associated with Germany, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
91Companies
1,102Contacts tracked
382Verified emails
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The 25 largest closed loop heat pump companies based in Germany

Ranked by team size
Top 25 of 91 company matches for closed loop heat pump companies based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCologne, GermanyHQ recorded Nov 6, 202651-200104 contacts →

Exact match

“Wir bei Vamo haben es uns zur Mission gemacht grünes, günstiges Heizen mit Wärmepumpen unkompliziert und für jedermann möglich sowie bezahlbar zu machen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchKasendorf, GermanyHQ recorded Nov 6, 20261,001-5,000100 contacts →

Exact match

“Die Wärmepumpe ist unsere DNA 🧬 Unsere Vision ist ein ideales Morgen - unabhängig von fossilen Energiequellen Werde auch du Teil der ait Seit 1998 tragen wir mit…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLindlar, GermanyHQ recorded Nov 6, 2026201-50080 contacts →

Exact match

“Seit über vier Jahrzehnten setzen Kunden auf innovative Energiespartechnik aus dem Hause ONI.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBerlin, GermanyHQ recorded Nov 6, 202611-5074 contacts →

Exact match

“Accelerating the transition to low carbon homes by building the leading heat pump OS for HVAC installers”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchUlm, GermanyHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“The Envola System is an innovative, holistic and most sustainable approach to enable smart and efficient HVAC solutions for buildings.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSalzhausen, GermanyHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“Die heimWatt GmbH ist einer der führenden und innovativsten Anbieter für Wärmepumpen, Photovoltaikanlagen und Energiemanagement in Norddeutschland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSaerbeck, GermanyHQ recorded Nov 6, 202651-20038 contacts →

Exact match

“Mit smarten Qualitätsprodukten, persönlichem Service und exakt passenden Lösungen bringen wir genau das richtige Maß an Wärme zu unseren Kunden.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchHerne, GermanyHQ recorded Nov 6, 202651-20034 contacts →

Exact match

“Die WATERKOTTE GmbH ist mit über 50 Jahren Erfahrung als Hersteller nachhaltiger Energiesysteme auf Basis der Wärmepumpe ein Pionier der Branche.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchKasendorf, GermanyHQ recorded Nov 6, 2026201-50027 contacts →

Exact match

“Originating from the KKT Kraus Company, the current KKT chillers brand is an important pillar within ait-deutschland GmbH.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMunich, GermanyHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“nuuEnergy unterstützt Sie dabei, Ihre Heiztechnik klimafreundlich und zukunftssicher zu machen – mit moderner Wärmepumpentechnologie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBerlin, GermanyHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“Der Bundesverband Wärmepumpe (BWP) e.V.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchOverath, GermanyHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“We are a young technology company that develops, builds and sells innovative high-temperature heat pumps for industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHamburg, GermanyHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“CALOR ENERGY is a Germany-wide partner for integrated and economically viable energy solutions across residential real estate, commercial properties, and private investment…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchKulmbach, GermanyHQ recorded Nov 6, 2026501-1,00015 contacts →

Exact match

“Sie suchen nachhaltige Lösungen zum Heizen, Kühlen, Lüften, zur Warmwasserbereitung oder Wärmerückgewinnung für Ihr Wohngebäude oder Ihre Gewerbeimmobilie?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchKulmbach, GermanyHQ recorded Nov 6, 2026201-50013 contacts →

Exact match

“Qvantum is an international industry that offers heat pumps for the next generation heating and cooling technologies that enables the decarbonization of our cities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMonheim, GermanyHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchEhingen-donau, GermanyHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Energieeffiziente Warmwasser-Systeme”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchHilden, GermanyHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Mit dekarbo° unterstützen wir Wohnungsunternehmen bei der Dekarbonisierung ihres Gebäudebestands mit einfachen, schnellen und effizienten Wärmepumpenlösungen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchFriedrichshafen, GermanyHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“caldoa entwickelt und realisiert bedarfsgerechte Eisspeicher- und Wärmepumpensysteme für die effiziente Wärme- und Kälteversorgung von Neubauten und Bestandsimmobilien.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSchmiden, GermanyHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“The core of our daily business is the industrial production of sustainable and efficient heating and cooling systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-2007 contacts →

Exact match

“Saubere Energie und Wärme für alle - das ist unser Traum bei Enpal.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchFrankfurt, GermanyHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Anschlussfertige Systemlösung für CO2-neutrales Heizen und Kühlen großer Hallen mit nachhaltiger Wärmepumpentechnologie, integrierter Steuerung und optimaler Luftverteilung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchEschborn, GermanyHQ recorded Nov 6, 20261-107 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchHeilbronn, GermanyHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Wir sind ein Hersteller von smarten Wärmepumpen, mit dem Fokus Bestandswohnungen mit Gasetagenheizungen auf Etagen-Wärmepumpen umzurüsten.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchGöttingen, GermanyHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Bei Schönknecht & Busch verbinden wir modernste Wärmepumpen-Technologie mit erstklassigem Design für das ultimative Wärmeerlebnis.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 91 closed loop heat pump companies based in Germany

See the full list, filter by size, metro and specialty, and access 382 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Closed loop heat pump companies based in Germany at a glance

As of Nov 6, 2026
34.7%Verified-email coverage
12.1Average contacts per company
11-50Median size (employees)
6.6%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
32
11-50
37
51-200
11
201-500
5
501-1,000
1
1,001-5,000
2

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 91 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Germany whose business descriptions match “closed loop heat pump companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 382 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “closed loop heat pump companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many closed loop heat pump companies are there based in Germany?

RevenueBase identified 91 company matches for closed loop heat pump companies associated with Germany as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

VAMO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most closed loop heat pump companies?

Berlin leads with 6 company records, followed by Kasendorf (3) and Bochum (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 382 professional contacts with verified work emails tracked across these 91 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.