Company lists · Data refreshed September 2026

Top 25 Geothermal system designers based in France

Name: Geothermal system designers based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 449 companies tracked

RevenueBase identified 449 geothermal system designers headquartered in France as of September 2026 and tracks 2,255 professional contacts across them, including 577 with verified work emails. Toulouse is the largest hub.

This list covers geothermal system designers headquartered in France, 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 19, 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 19, 2026 86% judged on-target in blind review

449Companies

2,255Contacts tracked

577Verified emails

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The 25 largest geothermal system designers based in France

Ranked by team size

Top 25 of 449 geothermal system designers based in France, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal system designers: 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	Vitaclim	Indirect evidence	Montpellier, FranceHQ checked Sep 19, 2026	201-500	132 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
2	Bobion & Joanin Groupe Bily	Indirect evidence	Lons, FranceHQ checked Sep 19, 2026	201-500	89 contacts →
	Indirect evidence “Fondée en 1983 par Patrice Bobion (artisan électricien) et Jean-Pierre Joanin (artisan plombier) l’entreprise Bobion & Joanin est devenue en près de 40 ans un acteur majeur du…” Source: RevenueBase Database · checked Sep 19, 2026
3	Celsius Energy	Indirect evidence	Clamart, FranceHQ checked Sep 19, 2026	51-200	79 contacts →
	Indirect evidence “The Earth can accumulate summer heat and reuse it in the winter, so energy can be stored from season to season.” Source: RevenueBase Database · checked Sep 19, 2026
4	Cegeclim Energies	Indirect evidence	Anglet, FranceHQ checked Sep 19, 2026	11-50	51 contacts →
	Indirect evidence “CEGECLIM ENERGIES est le Concessionnaire agréé HITACHI Cooling & Heating de BOSCH Home Confort Group sur la Nouvelle Aquitaine.” Source: RevenueBase Database · checked Sep 19, 2026
5	CFG Geothermal	Indirect evidence	Orleans, FranceHQ checked Sep 19, 2026	11-50	46 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
6	AXYS	Indirect evidence	Courtabœuf, FranceHQ checked Sep 19, 2026	11-50	41 contacts →
	Indirect evidence “L’équipe AXYS, forte de son expérience dans le domaine, met en application depuis plus de 25 ans, l’ensemble des nouvelles technologies applicables aux équipements techniques des…” Source: RevenueBase Database · checked Sep 19, 2026
7	K2 Energies	Indirect evidence	Le Bouscat, FranceHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence “Based in Bordeaux, we partner with architects, construction professionals and home owners to define and deliver energy efficient HVAC solutions.” Source: RevenueBase Database · checked Sep 19, 2026
8	Enerconfort	Indirect evidence	Artigues-près-bordeaux, FranceHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “La société Enerconfort est votre expert dans le domaine de l’énergie et particulièrement dans l’éco-rénovation de l’habitat.” Source: RevenueBase Database · checked Sep 19, 2026
9	Osmose	Indirect evidence	Roquefort Les Pins, FranceHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “Leader du secteur du CVC et de l'efficacité énergétique, Osmose fournit des solutions innovantes et clés en main aux industriels.” Source: RevenueBase Database · checked Sep 19, 2026
10	Froid Palombi	Indirect evidence	Cavaillon, FranceHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “Depuis 40 ans nous mettons notre passion et nos compétences au service des professionnels et des particuliers, pour proposer des solutions de climatisation et de chauffage…” Source: RevenueBase Database · checked Sep 19, 2026
11	Cisepz	Indirect evidence	Grenoble, FranceHQ checked Sep 19, 2026	51-200	30 contacts →
	Indirect evidence “Acteur de pointe du génie climatique dans notre région depuis 1938, le groupe CISEPZ dispose d’une organisation pour entreprises et particuliers lui permettant d’étudier, de…” Source: RevenueBase Database · checked Sep 19, 2026
12	A'climatis	Indirect evidence	Vendargues, FranceHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “Depuis plus de 15 ans, A'Climatis allie prix compétitifs et produits de grande qualité pour vous offrir une gamme hautement sélective.” Source: RevenueBase Database · checked Sep 19, 2026
13	ANÉO	Indirect evidence	Baillargues, FranceHQ checked Sep 19, 2026	51-200	26 contacts →
	Indirect evidence “À l’origine, nous, Philippe Gschwind et Nicolas Besson, étions deux salariés du secteur énergétique.” Source: RevenueBase Database · checked Sep 19, 2026
14	Lemasson	Indirect evidence	Agneaux, FranceHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “L’entreprise Lemasson créée en 1975, se situant à Agneaux dans la Manche dans la région de Normandie, est concepteur et fabricant de pompes à chaleur géothermiques.” Source: RevenueBase Database · checked Sep 19, 2026
15	Andreu Genie Climatique	Indirect evidence	Bailly Romainvilliers, FranceHQ checked Sep 19, 2026	51-200	22 contacts →
	Indirect evidence “NOTRE ADN: Nous sommes des techniciens spécialisés en génie climatique, génie électrique et gestion technique du bâtiment.” Source: RevenueBase Database · checked Sep 19, 2026
16	Bio-Énergies Diffusion	Indirect evidence	Castanet-tolosan, FranceHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “Bio-Énergies Diffusion est le n°1 de la géothermie dans tout le Sud-Ouest de la France.” Source: RevenueBase Database · checked Sep 19, 2026
17	JCM Confort	Partial evidence	Beaucouzé, FranceHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “Spécialistes des systèmes de chauffage basés sur les énergies renouvelables, implantés à Beaucouzé, nous intervenons sur l'ensemble de la région angevine (à Angers, Saumur…” Source: RevenueBase Database · checked Sep 19, 2026
18	ID Energies	Indirect evidence	FranceHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “Créée en 2007, nous sommes une entreprise de chauffagiste basée à Valognes près de Cherbourg dans le Cotentin.” Source: RevenueBase Database · checked Sep 19, 2026
19	AMD Énergies	Indirect evidence	Entraigues-sur-la-sorgue, FranceHQ checked Sep 19, 2026	51-200	18 contacts →
	Indirect evidence “Composée de plus d'une centaine de collaborateurs, la société AMD Energies est aujourd’hui un acteur incontournable du génie climatique et de la plomberie dans les départements du…” Source: RevenueBase Database · checked Sep 19, 2026
20	Tech9 Energie	Indirect evidence	Salon De Provence, FranceHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Depuis le 5 Juillet 2024, nos 4 entreprises RSE, ICE, TechniClim et Ecret ont fusionné en Tech9 Énergie.” Source: RevenueBase Database · checked Sep 19, 2026
21	TLS Geothermics	Partial evidence	Toulouse, FranceHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “TLS Geothermics is a geoscience tech company, exploring and developing geothermal projects for power, heat, cold and byproducts.” Source: RevenueBase Database · checked Sep 19, 2026
22	Thorens-Energies	Indirect evidence	Fillinges, FranceHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Thorens Énergies : l’énergie renouvelable au service d’un avenir durable.” Source: RevenueBase Database · checked Sep 19, 2026
23	PH Energies Devenu VIK Energies	Indirect evidence	Fleury Sur Orne, FranceHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
24	Acofroid SAS	Indirect evidence	Chassieu, FranceHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Nous sommes des énergéticiens à haute valeur humaine avec plus de 30 ans d’expertise au service de nos clients.” Source: RevenueBase Database · checked Sep 19, 2026
25	Drillheat	Indirect evidence	Maisse (91), FranceHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Expert en forage géothermique de surface.” Source: RevenueBase Database · checked Sep 19, 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: geothermal system designers. 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 geothermal system designers.
Partial evidence: Its own public description names part of geothermal system designers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal system designers. 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 449 geothermal system designers based in France

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Geothermal system designers based in France at a glance

As of Sep 19, 2026

25.6%Verified-email coverage

5.0Average contacts per company

1-10Median size (employees)

2.2%Largest-city concentration · Toulouse

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

289

11-50

125

51-200

201-500

1,001-5,000

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 449 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 geothermal system designers, 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 France whose own description of what they do matches “geothermal system designers”. 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 geothermal system designers), 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 geothermal system designers, and records with no verified work email. Companies headquartered outside France 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, 577 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 19, 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 geothermal system designers, 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 geothermal system designers are there based in France?

RevenueBase identified 449 geothermal system designers headquartered in France 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?

Vitaclim, headquartered in France, tops this list with the largest team on record.

Which city has the most geothermal system designers?

Toulouse leads with 10 headquartered companies, followed by Marseille (6) and Paris (5).

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 577 verified decision-maker contacts tracked across these 449 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 19, 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.