Company lists · Data refreshed October 2026

Top 25 Commercial geothermal retrofit contractors based in France

Name: Commercial geothermal retrofit contractors based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 221 companies tracked

RevenueBase identified 221 company matches for commercial geothermal retrofit contractors associated with France as of October 2026 and tracks 987 professional contacts across them, including 201 with verified work emails. Marseille is the largest hub.

This list covers company matches for commercial geothermal retrofit contractors associated with France, 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 10, 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 Oct 10, 2026 How this list was built

221Companies

987Contacts tracked

201Verified emails

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The 25 largest commercial geothermal retrofit contractors based in France

Ranked by team size

Top 25 of 221 company matches for commercial geothermal retrofit contractors based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Celsius Energy	Exact match	Clamart, FranceHQ recorded Oct 10, 2026	51-200	68 contacts →
	Exact match “The Earth can accumulate summer heat and reuse it in the winter, so energy can be stored from season to season.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	CFG Geothermal	Exact match	Orleans, FranceHQ recorded Oct 10, 2026	11-50	47 contacts →
	Exact match “CFG Services est une société de services et d’ingénierie, filiale à 100% du BRGM, spécialisée en géothermie qui dès le début des années 80 a été pionnière dans le développement…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	Osmose	Exact match	Roquefort Les Pins, FranceHQ recorded Oct 10, 2026	11-50	36 contacts →
	Exact match “Leader du secteur du CVC et de l'efficacité énergétique, Osmose fournit des solutions innovantes et clés en main aux industriels.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	ANÉO	Exact match	Baillargues, FranceHQ recorded Oct 10, 2026	51-200	28 contacts →
	Exact match “À l’origine, nous, Philippe Gschwind et Nicolas Besson, étions deux salariés du secteur énergétique.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	Avenna	Exact match	Nancy, FranceHQ recorded Oct 10, 2026	11-50	24 contacts →
	Exact match “Avenna rend les bâtiments plus performants en fournissant des services essentiels qui améliorent leur efficacité énergétique, renforcent leur fiabilité et optimisent le confort…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Andreu Genie Climatique	Exact match	Bailly Romainvilliers, FranceHQ recorded Oct 10, 2026	51-200	23 contacts →
	Exact match “NOTRE ADN: Nous sommes des techniciens spécialisés en génie climatique, génie électrique et gestion technique du bâtiment.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	Bio-Énergies Diffusion	Exact match	Castanet-tolosan, FranceHQ recorded Oct 10, 2026	11-50	20 contacts →
	Exact match “Bio-Énergies Diffusion est le n°1 de la géothermie dans tout le Sud-Ouest de la France.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	Tech9 Energie	Exact match	Salon De Provence, FranceHQ recorded Oct 10, 2026	11-50	16 contacts →
	Exact match “Depuis le 5 Juillet 2024, nos 4 entreprises RSE, ICE, TechniClim et Ecret ont fusionné en Tech9 Énergie.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	Geother	Exact match	Nanterre, FranceHQ recorded Oct 10, 2026	1-10	16 contacts →
	Exact match “GEOTHER is an engineering and consulting company specializing in geothermal energy and, in a general way, in renewable energies, groundwater management and hydrogeotechnics.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	PH Energies Devenu VIK Energies	Exact match	Fleury Sur Orne, FranceHQ recorded Oct 10, 2026	11-50	16 contacts →
	Exact match “Née à l'initiative d'un plombier chauffagiste passionné par son métier, désirant faire connaître les nouvelles technologies et solutions de chauffage et climatisation autour de…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	Teccontrol	Exact match	Rennes, FranceHQ recorded Oct 10, 2026	11-50	16 contacts →
	Exact match “TECCONTROL est un intégrateur-facilitateur de solutions énergétiques à basse consommation pour l'habitat individuel et le tertiaire.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Drillheat	Exact match	Maisse (91), FranceHQ recorded Oct 10, 2026	11-50	15 contacts →
	Exact match “Expert en forage géothermique de surface.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Acofroid SAS	Exact match	Chassieu, FranceHQ recorded Oct 10, 2026	11-50	14 contacts →
	Exact match “Nous sommes des énergéticiens à haute valeur humaine avec plus de 30 ans d’expertise au service de nos clients.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Geothermaq	Exact match	Pau, FranceHQ recorded Oct 10, 2026	1-10	14 contacts →
	Exact match “GEOTHERMAQ est une société résolument engagée dans la transition énergétique.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Energeco SAS	Exact match	Bas En Basset, FranceHQ recorded Oct 10, 2026	11-50	12 contacts →
	Exact match “Installateur conseil Chauffage Plomberie Sanitaire Climatisation Ventilation Energies Renouvelables Intervention Loire & Haute Loire Le secteur des Energies Renouvelables est…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	Géotec Energie	Exact match	Plaisir, FranceHQ recorded Oct 10, 2026	11-50	11 contacts →
	Exact match “La société Géotec Energie, filiale du Groupe Géotec, est spécialisée dans la réalisation de forages géothermiques sur sondes.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	Caleco Sarl	Exact match	Hyères, FranceHQ recorded Oct 10, 2026	11-50	10 contacts →
	Exact match “Depuis 1982, Caleco est spécialisée dans l’étude et la réalisation de tous travaux en génie climatique (chauffage, climatisation, pompe à chaleur, ventilation) HYERES / LA…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Geofluid	Exact match	Roissy-En-France, FranceHQ recorded Oct 10, 2026	11-50	9 contacts →
	Exact match “GEOFLUID is a geothermal engineering and service company based in FRANCE, France.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19	TEC Clim	Exact match	Canéjan, FranceHQ recorded Oct 10, 2026	11-50	9 contacts →
	Exact match “Entreprise crée en 1992, Tec Clim a commencé ses activités dans le domaine du froid et du conditionnement d'air.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	Inthersanit	Exact match	La Motte Servolex, FranceHQ recorded Oct 10, 2026	11-50	8 contacts →
	Exact match “INTHERSANIT is a construction company based out of 273 RUE DENIS PAPIN, LA MOTTE SERVOLEX, France.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	CAP Clim ET Energies	Exact match	Peyruis, FranceHQ recorded Oct 10, 2026	1-10	8 contacts →
	Exact match “Depuis +20 ans, votre confort est notre priorité Fournisseur de solutions de chauffage et de climatisation écoénergétiques et fiables aux particuliers et aux professionnels, nous…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	Climasphere	Exact match	Reillanne, FranceHQ recorded Oct 10, 2026	1-10	6 contacts →
	Exact match “CLIMASPHERE est spécialisée dans l'optimisation énergétique des bâtiments et réalise l'installation de panneaux solaires, système de climatisation et pompe à chaleur.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	Étao Vendée	Exact match	Boufféré, FranceHQ recorded Oct 10, 2026	11-50	6 contacts →
	Exact match “Étao Vendée : l’expert des solutions de pompes à chaleur en géothermie, aquathermie et aérothermie.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	CINEN	Exact match	Carquefou, FranceHQ recorded Oct 10, 2026	1-10	6 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	Econowatt	Exact match	Vetraz Monthoux, FranceHQ recorded Oct 10, 2026	1-10	6 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 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 “commercial 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 25 of 221 commercial geothermal retrofit contractors based in France

See the full list, filter by size, metro and specialty, and access 201 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Commercial geothermal retrofit contractors based in France at a glance

As of Oct 10, 2026

20.4%Verified-email coverage

4.5Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Marseille

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

154

11-50

51-200

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 221 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 France whose business descriptions match “commercial 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 201 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 10, 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 “commercial geothermal retrofit contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many commercial geothermal retrofit contractors are there based in France?

RevenueBase identified 221 company matches for commercial geothermal retrofit contractors associated with France 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?

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

Which city has the most commercial geothermal retrofit contractors?

Marseille leads with 4 company records, followed by Paris (4) and Concarneau (3).

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 201 professional contacts with verified work emails tracked across these 221 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 10, 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.