Company lists · Data refreshed November 2026

Top 25 Ground source heat pump installers based in Germany

RevenueBase identified 230 company matches for ground source heat pump installers associated with Germany as of November 2026 and tracks 1,328 professional contacts across them, including 317 with verified work emails. Berlin is the largest hub.

This list covers company matches for ground source heat pump installers 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
230Companies
1,328Contacts tracked
317Verified emails
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The 25 largest ground source heat pump installers based in Germany

Ranked by team size
Top 25 of 230 company matches for ground source heat pump installers 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 matchBerlin, GermanyHQ recorded Nov 6, 202651-200140 contacts →

Exact match

“Enter ist ein bundesweit tätiger Anbieter von Wärmepumpen, Solaranlagen (Photovoltaik) mit Stromspeicher, Wallboxen und Energiemanagement-Systemen für Eigenheimbesitzer in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact 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
3Exact 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
4Exact 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
5Exact matchCologne, GermanyHQ recorded Nov 6, 202651-20034 contacts →

Exact match

“heimWatt hat Ende Januar 2025 u.a.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact 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
7Exact 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
8Exact matchWillich, GermanyHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Die Herausforderung unserer Generation ist der Klimawandel, eine Mammutaufgabe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSchwerin, GermanyHQ recorded Nov 6, 20261-1013 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact 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
11Exact matchAhrensburg, GermanyHQ recorded Nov 6, 202651-20011 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSchramberg, GermanyHQ recorded Nov 6, 202651-2009 contacts →

Exact match

“Heizung - Klima - Sanitär”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact 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
14Exact 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
15Exact matchMarl, GermanyHQ recorded Nov 6, 202651-2006 contacts →

Exact match

“Geowell Erdwärme GmbH & Co.KG is a construction company based out of 5 Neckarstraße, Marl, Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchEisingen, GermanyHQ recorded Nov 6, 20261-106 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHamburg, GermanyHQ recorded Nov 6, 20261-106 contacts →

Exact match

“ENWI, die Abkürzung für "Energie und Wohntechnik Installation", ist ein Unternehmen, welches als Dienstleistungs- und Installations-Unternehmen, für Wärmepumpen & Smart Homes im…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWindeck, GermanyHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Metternich Haustechnik is a renewables & environment company based out of Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchOsnabrück, GermanyHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Liekam Haustechnik GmbH is a construction company based out of 8 Heinrich-Hasemeier-Straße, Osnabrück, Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchChemnitz, GermanyHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Die GeoCollect GmbH ist ein Hersteller von Erdwärmekollektoren mit Sitz in Chemnitz.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAltensteig, GermanyHQ recorded Nov 6, 202611-504 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHeidelberg, GermanyHQ recorded Nov 6, 202651-2003 contacts →

Exact match

“Jahrelange Erfahrungen in der Planung und Ausführung von HLK Anlagen haben unsere Firma zu einem kompetenten Ansprechpartner in der Region geprägt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchFulda, GermanyHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Heizungsanlagen, regenerative Energien und tolle Badgestaltungen von Autenrieth + Wehner GmbH geplant, gebaut und gewartet.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchKempten, GermanyHQ recorded Nov 6, 202651-2003 contacts →

Exact match

“Als Wärmelieferant bzw.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchWeener, GermanyHQ recorded Nov 6, 202611-503 contacts →

Exact match

Recorded description not available.

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

Showing 25 of 230 ground source heat pump installers based in Germany

See the full list, filter by size, metro and specialty, and access 317 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ground source heat pump installers based in Germany at a glance

As of Nov 6, 2026
23.9%Verified-email coverage
5.8Average contacts per company
1-10Median size (employees)
6.5%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
112
11-50
58
51-200
24
201-500
3

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 230 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 “ground source heat pump installers” 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 317 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 “ground source heat pump installers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ground source heat pump installers are there based in Germany?

RevenueBase identified 230 company matches for ground source heat pump installers 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?

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

Which city has the most ground source heat pump installers?

Berlin leads with 15 company records, followed by Hamburg (6) and Cologne (5).

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 317 professional contacts with verified work emails tracked across these 230 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.