Company lists · Data refreshed October 2026
Top 21 Geothermal retrofit contractors based in Germany
RevenueBase identified 84 company matches for geothermal retrofit contractors associated with Germany as of October 2026 and tracks 494 professional contacts across them, including 149 with verified work emails. Berlin is the largest hub.
This list covers company matches for geothermal retrofit contractors 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 October 13, 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.
The 21 largest geothermal retrofit contractors based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 98 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 2 | 49 contacts → | ||||
Exact match “BauGrund Süd Gesellschaft für Geothermie mbH is an utilities company based out of MAYBACHSTRASSE 5, Bad Wurzach, Germany.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 3 | 36 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 4 | 30 contacts → | ||||
Exact match “Die Daldrup & Söhne AG ist Spezialist für Bohrtechnik und die Erschließung geologischer Ressourcen in Deutschland mit Sitz in Ascheberg, Nordrhein-Westfalen.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 5 | 14 contacts → | ||||
Exact match “Geothermie Neubrandenburg GmbH (GTN) is an internationally active consultancy and planning office of engineers and geoscientsits.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 6 | 13 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 7 | 10 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 8 | 7 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 9 | 6 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 10 | 6 contacts → | ||||
Exact match “Unabhängige Sachverständige und Planer verbinden Erkenntnisse aus neuester Forschung, wissenschaftliche Methoden und geologische Erfahrung aus jahrzehntelanger Praxis.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 11 | 5 contacts → | ||||
Exact match “Wir bieten unseren Kunden genau das, was sie brauchen – zukunftsorientierte und wirtschaftliche Lösung nach dem neuesten Stand von Wissenschaft und Technik.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 12 | 5 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 13 | 5 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 14 | 4 contacts → | ||||
Exact match “Die GeoCollect GmbH ist ein Hersteller von Erdwärmekollektoren mit Sitz in Chemnitz.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 15 | 2 contacts → | ||||
Exact match “GeoAlto steht für nachhaltige Wärme und Kälte aus der Erde.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 16 | 2 contacts → | ||||
Exact match “Energy Systems Westerwald – Ihr kompetenter, fairer und zuverlässiger Partner rund um Wärmepumpen, Energiemanagementsysteme und Flächenheizungen im Westerwald.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 17 | 2 contacts → | ||||
Exact match “Nachhaltiges Wohnen ist die Zukunft.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 18 | 1 contacts → | ||||
Exact match “WECHNER Haustechnik steht für durchdachte, nachhaltige Lösungen rund um moderne Heiz- und Energiesysteme.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 19 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 20 | 1 contacts → | ||||
Exact match “Der Oberrheingraben zwischen Basel und Frankfurt birgt eines der größten Potenziale für erneuerbare Wärme in ganz Deutschland.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match “Make the transition to environmentally conscious commercial properties with the help of our service offerings!” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “geothermal retrofit contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 21 of 84 geothermal retrofit contractors based in Germany
See the full list, filter by size, metro and specialty, and access 149 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Geothermal retrofit contractors based in Germany at a glance
As of Oct 13, 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 84 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 “geothermal retrofit contractors” 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 149 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 October 13, 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 “geothermal retrofit contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many geothermal retrofit contractors are there based in Germany?
RevenueBase identified 84 company matches for geothermal retrofit contractors associated with Germany as of October 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 geothermal retrofit contractors?
Berlin leads with 3 company records, followed by Bad Marienberg (2) and Chemnitz (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 149 professional contacts with verified work emails tracked across these 84 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 October 13, 2026.
Ready to reach these companies? Verified emails and direct dials for all 84 geothermal retrofit contractors based in Germany. Start with a free account, no credit card.
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Geothermal retrofit contractors by geography
- Geothermal retrofit contractors based in Belgium
- Geothermal retrofit contractors based in Canada
- Geothermal retrofit contractors based in Finland
- Geothermal retrofit contractors based in France
- Geothermal retrofit contractors based in Ireland
- Geothermal retrofit contractors based in Italy
- Geothermal retrofit contractors based in the Netherlands
- Geothermal retrofit contractors based in Spain
- Geothermal retrofit contractors based in Switzerland
- Geothermal retrofit contractors based in the United Kingdom
- Geothermal retrofit contractors based in the United States
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.
More company lists
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- Lists A-Z
- New lists
- Geothermal retrofit contractors based in Belgium
- Geothermal retrofit contractors based in Canada
- Geothermal retrofit contractors based in Finland
- Geothermal retrofit contractors based in France
- Geothermal retrofit contractors based in Ireland
- Geothermal retrofit contractors based in Italy
Company intelligence · public preview
Top 21 geothermal retrofit contractors based in Germany
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 84 matching company records for geothermal retrofit contractors based in Germany, with 494 tracked contacts and 149 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 21 geothermal retrofit contractors based in Germany
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | VAMOvamo-energy.com HQ: Cologne, GermanyReported employees: 51-200 | Cologne, Germany | 51-200 | Exact match | 98 contacts → |
“Wir bei Vamo haben es uns zur Mission gemacht grünes, günstiges Heizen mit Wärmepumpen unkompliziert und für jedermann möglich sowie bezahlbar zu machen.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Baugrund SÜD Gesellschaft FÜR Geothermie MBHbaugrundsued.deHQ: Bad Wurzach, GermanyReported employees: 51-200 | Bad Wurzach, Germany | 51-200 | Exact match | 49 contacts → |
“BauGrund Süd Gesellschaft für Geothermie mbH is an utilities company based out of MAYBACHSTRASSE 5, Bad Wurzach, Germany.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Waterkotte Gmbhwaterkotte.de HQ: Herne, GermanyReported employees: 51-200 | Herne, Germany | 51-200 | Exact match | 36 contacts → |
“Die WATERKOTTE GmbH ist mit über 50 Jahren Erfahrung als Hersteller nachhaltiger Energiesysteme auf Basis der Wärmepumpe ein Pionier der Branche.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Daldrup & Söhne AGdaldrup.eu HQ: Ascheberg, GermanyReported employees: 51-200 | Ascheberg, Germany | 51-200 | Exact match | 30 contacts → |
“Die Daldrup & Söhne AG ist Spezialist für Bohrtechnik und die Erschließung geologischer Ressourcen in Deutschland mit Sitz in Ascheberg, Nordrhein-Westfalen.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Geothermie Neubrandenburg Gmbhgtn-online.de HQ: Neubrandenburg, GermanyReported employees: 11-50 | Neubrandenburg, Germany | 11-50 | Exact match | 14 contacts → |
“Geothermie Neubrandenburg GmbH (GTN) is an internationally active consultancy and planning office of engineers and geoscientsits.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Wibau Haustechnik Gmbhwibau-haustechnik.de HQ: Schwerin, GermanyReported employees: 11-50 | Schwerin, Germany | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | Erdwärme Grünwald Gmbherdwaerme-gruenwald.de HQ: Grünwald, GermanyReported employees: 11-50 | Grünwald, Germany | 11-50 | Exact match | 10 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | Stiebel Eltron Deutschland Vertriebs Gmbhstiebel-eltron.de HQ: Eschborn, GermanyReported employees: 1-10 | Eschborn, Germany | 1-10 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 | Geowell Erdwärme Gmbh & Co.Kggeowell.de HQ: Marl, GermanyReported employees: 51-200 | Marl, Germany | 51-200 | Exact match | 6 contacts → |
“Geowell Erdwärme GmbH & Co.KG is a construction company based out of 5 Neckarstraße, Marl, Germany.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Tewag Technologietewag.de HQ: Starzach-felldorf, GermanyReported employees: 11-50 | Starzach-felldorf, Germany | 11-50 | Exact match | 6 contacts → |
“Unabhängige Sachverständige und Planer verbinden Erkenntnisse aus neuester Forschung, wissenschaftliche Methoden und geologische Erfahrung aus jahrzehntelanger Praxis.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Hydrotherm Consult Gmbhhydro-therm.de HQ: Walldorf, GermanyReported employees: 1-10 | Walldorf, Germany | 1-10 | Exact match | 5 contacts → |
“Wir bieten unseren Kunden genau das, was sie brauchen – zukunftsorientierte und wirtschaftliche Lösung nach dem neuesten Stand von Wissenschaft und Technik.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Heatpump23heatpump23.de HQ: Heilbronn, GermanyReported employees: 1-10 | Heilbronn, Germany | 1-10 | Exact match | 5 contacts → |
“Wir sind ein Hersteller von smarten Wärmepumpen, mit dem Fokus Bestandswohnungen mit Gasetagenheizungen auf Etagen-Wärmepumpen umzurüsten.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Enwi Gmbhgoenwi.comHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 5 contacts → |
“ENWI, die Abkürzung für "Energie und Wohntechnik Installation", ist ein Unternehmen, welches als Dienstleistungs- und Installations-Unternehmen, für Wärmepumpen & Smart Homes im…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Geocollect Gmbh - Erdwärmegeocollect.de HQ: Chemnitz, GermanyReported employees: 1-10 | Chemnitz, Germany | 1-10 | Exact match | 4 contacts → |
“Die GeoCollect GmbH ist ein Hersteller von Erdwärmekollektoren mit Sitz in Chemnitz.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Geoalto Gmbhgeoalto.de HQ: Rottenburg Am Neckar, GermanyReported employees: 1-10 | Rottenburg Am Neckar, Germany | 1-10 | Exact match | 2 contacts → |
“GeoAlto steht für nachhaltige Wärme und Kälte aus der Erde.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Energy Systems Westerwaldes-ww.de HQ: Hachenburg, GermanyReported employees: 1-10 | Hachenburg, Germany | 1-10 | Exact match | 2 contacts → |
“Energy Systems Westerwald – Ihr kompetenter, fairer und zuverlässiger Partner rund um Wärmepumpen, Energiemanagementsysteme und Flächenheizungen im Westerwald.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Betatherm Gmbh & Co. KGbetatherm.deHQ: Wangen Im Allgäu, GermanyReported employees: 11-50 | Wangen Im Allgäu, Germany | 11-50 | Exact match | 2 contacts → |
“Nachhaltiges Wohnen ist die Zukunft.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Wechner Wärmepumpen Gmbhwechner.de HQ: Peiting, GermanyReported employees: 51-200 | Peiting, Germany | 51-200 | Exact match | 1 contacts → |
“WECHNER Haustechnik steht für durchdachte, nachhaltige Lösungen rund um moderne Heiz- und Energiesysteme.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ehlen & Söhne Gmbhehlen-erdbohrungen.com HQ: GermanyReported employees: 1-10 | Germany | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Geohardt Gmbhgeohardt.de HQ: Schwetzingen, GermanyReported employees: 1-10 | Schwetzingen, Germany | 1-10 | Exact match | 1 contacts → |
“Der Oberrheingraben zwischen Basel und Frankfurt birgt eines der größten Potenziale für erneuerbare Wärme in ganz Deutschland.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Envi-Solutions Gmbhenvi-solutions.euHQ: Düsseldorf, GermanyReported employees: 1-10 | Düsseldorf, Germany | 1-10 | Exact match | 1 contacts → |
“Make the transition to environmentally conscious commercial properties with the help of our service offerings!” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 84 company matches
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Geothermal retrofit contractors: dataset insights
October 13, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
80 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 84 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for geothermal retrofit contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geothermal retrofit contractors did RevenueBase find based in Germany?
The saved snapshot records 84 matching company records, 494 tracked contacts and 149 verified emails. The public preview displays 21 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Geothermal retrofit contractors by geography
- Geothermal retrofit contractors based in Belgium
- Geothermal retrofit contractors based in Canada
- Geothermal retrofit contractors based in Finland
- Geothermal retrofit contractors based in France
- Geothermal retrofit contractors based in Ireland
- Geothermal retrofit contractors based in Italy
- Geothermal retrofit contractors based in the Netherlands
- Geothermal retrofit contractors based in Spain
- Geothermal retrofit contractors based in Switzerland
- Geothermal retrofit contractors based in the United Kingdom
- Geothermal retrofit contractors based in the United States
Cite this list
RevenueBase Data Team. Top 21 geothermal retrofit contractors based in Germany. Snapshot: October 13, 2026. https://revenuebase.ai/companies/geothermal-retrofit-contractors/germany.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Geothermal retrofit contractors based in Belgium
- Geothermal retrofit contractors based in Canada
- Geothermal retrofit contractors based in Finland
- Geothermal retrofit contractors based in France
- Geothermal retrofit contractors based in Ireland
- Geothermal retrofit contractors based in Italy
Company intelligence · public preview
Top 21 geothermal retrofit contractors based in Germany
RevenueBase records 84 matching company records for geothermal retrofit contractors based in Germany, with 494 tracked contacts and 149 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 21 geothermal retrofit contractors based in Germany
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | VAMOvamo-energy.com HQ: Cologne, GermanyReported employees: 51-200 | Cologne, Germany | 51-200 | Exact match | 98 contacts → |
“Wir bei Vamo haben es uns zur Mission gemacht grünes, günstiges Heizen mit Wärmepumpen unkompliziert und für jedermann möglich sowie bezahlbar zu machen.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Baugrund SÜD Gesellschaft FÜR Geothermie MBHbaugrundsued.de HQ: Bad Wurzach, GermanyReported employees: 51-200 | Bad Wurzach, Germany | 51-200 | Exact match | 49 contacts → |
“BauGrund Süd Gesellschaft für Geothermie mbH is an utilities company based out of MAYBACHSTRASSE 5, Bad Wurzach, Germany.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Waterkotte Gmbhwaterkotte.de HQ: Herne, GermanyReported employees: 51-200 | Herne, Germany | 51-200 | Exact match | 36 contacts → |
“Die WATERKOTTE GmbH ist mit über 50 Jahren Erfahrung als Hersteller nachhaltiger Energiesysteme auf Basis der Wärmepumpe ein Pionier der Branche.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Daldrup & Söhne AGdaldrup.eu HQ: Ascheberg, GermanyReported employees: 51-200 | Ascheberg, Germany | 51-200 | Exact match | 30 contacts → |
“Die Daldrup & Söhne AG ist Spezialist für Bohrtechnik und die Erschließung geologischer Ressourcen in Deutschland mit Sitz in Ascheberg, Nordrhein-Westfalen.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Geothermie Neubrandenburg Gmbhgtn-online.de HQ: Neubrandenburg, GermanyReported employees: 11-50 | Neubrandenburg, Germany | 11-50 | Exact match | 14 contacts → |
“Geothermie Neubrandenburg GmbH (GTN) is an internationally active consultancy and planning office of engineers and geoscientsits.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Wibau Haustechnik Gmbhwibau-haustechnik.de HQ: Schwerin, GermanyReported employees: 11-50 | Schwerin, Germany | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | Erdwärme Grünwald Gmbherdwaerme-gruenwald.de HQ: Grünwald, GermanyReported employees: 11-50 | Grünwald, Germany | 11-50 | Exact match | 10 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | Stiebel Eltron Deutschland Vertriebs Gmbhstiebel-eltron.de HQ: Eschborn, GermanyReported employees: 1-10 | Eschborn, Germany | 1-10 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 | Geowell Erdwärme Gmbh & Co.Kggeowell.de HQ: Marl, GermanyReported employees: 51-200 | Marl, Germany | 51-200 | Exact match | 6 contacts → |
“Geowell Erdwärme GmbH & Co.KG is a construction company based out of 5 Neckarstraße, Marl, Germany.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Tewag Technologietewag.de HQ: Starzach-felldorf, GermanyReported employees: 11-50 | Starzach-felldorf, Germany | 11-50 | Exact match | 6 contacts → |
“Unabhängige Sachverständige und Planer verbinden Erkenntnisse aus neuester Forschung, wissenschaftliche Methoden und geologische Erfahrung aus jahrzehntelanger Praxis.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Hydrotherm Consult Gmbhhydro-therm.de HQ: Walldorf, GermanyReported employees: 1-10 | Walldorf, Germany | 1-10 | Exact match | 5 contacts → |
“Wir bieten unseren Kunden genau das, was sie brauchen – zukunftsorientierte und wirtschaftliche Lösung nach dem neuesten Stand von Wissenschaft und Technik.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Heatpump23heatpump23.de HQ: Heilbronn, GermanyReported employees: 1-10 | Heilbronn, Germany | 1-10 | Exact match | 5 contacts → |
“Wir sind ein Hersteller von smarten Wärmepumpen, mit dem Fokus Bestandswohnungen mit Gasetagenheizungen auf Etagen-Wärmepumpen umzurüsten.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Enwi Gmbhgoenwi.com HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 5 contacts → |
“ENWI, die Abkürzung für "Energie und Wohntechnik Installation", ist ein Unternehmen, welches als Dienstleistungs- und Installations-Unternehmen, für Wärmepumpen & Smart Homes im…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Geocollect Gmbh - Erdwärmegeocollect.de HQ: Chemnitz, GermanyReported employees: 1-10 | Chemnitz, Germany | 1-10 | Exact match | 4 contacts → |
“Die GeoCollect GmbH ist ein Hersteller von Erdwärmekollektoren mit Sitz in Chemnitz.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Geoalto Gmbhgeoalto.de HQ: Rottenburg Am Neckar, GermanyReported employees: 1-10 | Rottenburg Am Neckar, Germany | 1-10 | Exact match | 2 contacts → |
“GeoAlto steht für nachhaltige Wärme und Kälte aus der Erde.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Energy Systems Westerwaldes-ww.de HQ: Hachenburg, GermanyReported employees: 1-10 | Hachenburg, Germany | 1-10 | Exact match | 2 contacts → |
“Energy Systems Westerwald – Ihr kompetenter, fairer und zuverlässiger Partner rund um Wärmepumpen, Energiemanagementsysteme und Flächenheizungen im Westerwald.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Betatherm Gmbh & Co. KGbetatherm.de HQ: Wangen Im Allgäu, GermanyReported employees: 11-50 | Wangen Im Allgäu, Germany | 11-50 | Exact match | 2 contacts → |
“Nachhaltiges Wohnen ist die Zukunft.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Wechner Wärmepumpen Gmbhwechner.de HQ: Peiting, GermanyReported employees: 51-200 | Peiting, Germany | 51-200 | Exact match | 1 contacts → |
“WECHNER Haustechnik steht für durchdachte, nachhaltige Lösungen rund um moderne Heiz- und Energiesysteme.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ehlen & Söhne Gmbhehlen-erdbohrungen.com HQ: GermanyReported employees: 1-10 | Germany | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Geohardt Gmbhgeohardt.de HQ: Schwetzingen, GermanyReported employees: 1-10 | Schwetzingen, Germany | 1-10 | Exact match | 1 contacts → |
“Der Oberrheingraben zwischen Basel und Frankfurt birgt eines der größten Potenziale für erneuerbare Wärme in ganz Deutschland.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Envi-Solutions Gmbhenvi-solutions.eu HQ: Düsseldorf, GermanyReported employees: 1-10 | Düsseldorf, Germany | 1-10 | Exact match | 1 contacts → |
“Make the transition to environmentally conscious commercial properties with the help of our service offerings!” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 84 company matches
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Geothermal retrofit contractors: dataset insights
October 13, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
80 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 84 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for geothermal retrofit contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geothermal retrofit contractors did RevenueBase find based in Germany?
The saved snapshot records 84 matching company records, 494 tracked contacts and 149 verified emails. The public preview displays 21 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Geothermal retrofit contractors by geography
- Geothermal retrofit contractors based in Belgium
- Geothermal retrofit contractors based in Canada
- Geothermal retrofit contractors based in Finland
- Geothermal retrofit contractors based in France
- Geothermal retrofit contractors based in Ireland
- Geothermal retrofit contractors based in Italy
- Geothermal retrofit contractors based in the Netherlands
- Geothermal retrofit contractors based in Spain
- Geothermal retrofit contractors based in Switzerland
- Geothermal retrofit contractors based in the United Kingdom
- Geothermal retrofit contractors based in the United States
Cite this list
RevenueBase Data Team. Top 21 geothermal retrofit contractors based in Germany. Snapshot: October 13, 2026. https://revenuebase.ai/companies/geothermal-retrofit-contractors/germany.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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