Company lists · Data refreshed November 2026
Top 25 Geothermal retrofit contractors worldwide
RevenueBase identified 2,909 company matches for geothermal retrofit contractors worldwide as of November 2026 and tracks 17,313 professional contacts across them, including 4,875 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for geothermal retrofit contractors worldwide, 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. Country and city lists for geothermal retrofit contractors follow the table.
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 25 largest geothermal retrofit contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 381 contacts → | ||||
Exact match “At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 229 contacts → | ||||
Exact match “WaterFurnace International, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 221 contacts → | ||||
Exact match “De energietransitie is één van de grootste maatschappelijke opgaven, maar wij begrijpen dat jouw wooncomfort net zo belangrijk is.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 164 contacts → | ||||
Exact match “Groupe multirégional indépendant dédié aux activités de génie climatique : • Exploitation de chaufferies collectives toutes énergies et toutes puissances, • Maintenance de…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 152 contacts → | ||||
Exact match “WIR SORGEN FÜR IHR WOHLBEFINDEN.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 137 contacts → | ||||
Exact match “ABOUT http://iceland-drilling.com/ Iceland Drilling Ltd is a leading high technical company in the field of high temperature geothermal drilling and has many decades of experience…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 134 contacts → | ||||
Exact match “The UK’s heating system is stuck in the past, costing people and the planet too much.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 127 contacts → | ||||
Exact match “Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 124 contacts → | ||||
Exact match “Dandelion Energy is the nation’s leading residential geothermal provider, on a mission to make the world’s most efficient heating and cooling technology accessible to everyone.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 117 contacts → | ||||
Exact match “Jetson is on a mission to accelerate the transition of 100M homes across North America away from burning fossil fuels to sustainable energy use.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 111 contacts → | ||||
Exact match “Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 110 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 106 contacts → | ||||
Exact match “Haliburton Geothermal has been established to provide economical and environmental choices pertaining to geothermal in Haliburton Country.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 104 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 | |||||
| 15 | 95 contacts → | ||||
Exact match “Our organization has a special attitude with the application of innovative solutions and procedures with a value-based approach in building process and in site management.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 76 contacts → | ||||
Exact match “Energy 1 designs and installs state-of-the-art Mechanical, Electrical, and Plumbing systems that utilize renewable technologies and deliver efficiency, elegance, and legacies our…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 76 contacts → | ||||
Exact match “Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 72 contacts → | ||||
Exact match “Rototec provides geoenergy based heating and cooling for large properties.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 69 contacts → | ||||
Exact match “Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 69 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 68 contacts → | ||||
Exact match “Fundada em 2001 e com atividade a nível nacional e internacional a DFS AVAC inaugurou o seu negócio na área da comercialização de sistemas de aquecimento e arrefecimento de baixa…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 63 contacts → | ||||
Exact match “Energy Machines is a leading provider of integrated energy systems that decarbonize heating and cooling while reducing operating costs for real estate owners, municipalities, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 63 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 62 contacts → | ||||
Exact match “When you turn to us for your homes' energy efficient upgrade, you can take comfort in knowing you've made the right choice for your Plumbing, Electrical, Solar or Heating and Air…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 61 contacts → | ||||
Exact match “Decarbonising heat - one community at a time.” Recorded in the RevenueBase company graph · Nov 6, 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 25 of 2,909 geothermal retrofit contractors worldwide
See the full list, filter by size, metro and specialty, and access 4,875 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Geothermal retrofit contractors worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for geothermal retrofit contractors are linked below.
- What qualifies
- Company records worldwide 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. 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 4,875 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.
Geothermal retrofit contractors by location
14 lists · largest firstEvery Geothermal retrofit contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal retrofit contractors based in the United States586
- Geothermal retrofit contractors based in France384
- Geothermal retrofit contractors based in the United Kingdom287
- Geothermal retrofit contractors based in Germany192
- Geothermal retrofit contractors based in the Netherlands148
- Geothermal retrofit contractors based in Italy136
- Geothermal retrofit contractors based in Spain121
- Geothermal retrofit contractors based in Canada117
- Geothermal retrofit contractors based in Belgium65
- Geothermal retrofit contractors based in Switzerland59
- Geothermal retrofit contractors based in Australia47
- Geothermal retrofit contractors based in Ireland42
- Geothermal retrofit contractors based in Sweden39
- Geothermal retrofit contractors based in Finland38
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 worldwide?
RevenueBase identified 2,909 company matches for geothermal retrofit contractors worldwide 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?
Homeworks Energy, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most geothermal retrofit contractors?
The United States leads with 586 companies, followed by France (384) and the United Kingdom (287). Every geothermal retrofit contractors list by country and city is linked on this page.
Which city has the most geothermal retrofit contractors?
London leads with 24 company records, followed by Madrid (16) and Calgary (12).
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 4,875 professional contacts with verified work emails tracked across these 2,909 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.
Ready to reach these companies? Verified emails and direct dials for all 2,909 geothermal retrofit contractors worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 geothermal retrofit contractors worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,909 matching company records for geothermal retrofit contractors worldwide, with 17,313 tracked contacts and 4,875 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 25 geothermal retrofit contractors worldwide
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 |  Homeworks Energy, INChomeworksenergy.comHQ: Medford, MA, United StatesReported employees: 201-500 | Medford, MA, United States | 201-500 | Exact match | 381 contacts → |
“At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Waterfurnace Internationalwaterfurnace.comHQ: Fort Wayne, IN, United StatesReported employees: 201-500 | Fort Wayne, IN, United States | 201-500 | Exact match | 229 contacts → |
“WaterFurnace International, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Saman Groepsamangroep.nlHQ: Zierikzee, NetherlandsReported employees: 201-500 | Zierikzee, Netherlands | 201-500 | Exact match | 221 contacts → |
“De energietransitie is één van de grootste maatschappelijke opgaven, maar wij begrijpen dat jouw wooncomfort net zo belangrijk is.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  M-Energiesm-energies.frHQ: Ludres Cedex, FranceReported employees: 501-1,000 | Ludres Cedex, France | 501-1,000 | Exact match | 164 contacts → |
“Groupe multirégional indépendant dédié aux activités de génie climatique : • Exploitation de chaufferies collectives toutes énergies et toutes puissances, • Maintenance de…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  IDM Energiesysteme Gmbhidm-energie.atHQ: Matrei, AustriaReported employees: 501-1,000 | Matrei, Austria | 501-1,000 | Exact match | 152 contacts → |
“WIR SORGEN FÜR IHR WOHLBEFINDEN.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Iceland Drilling Company LTDjardboranir.isHQ: IcelandReported employees: 51-200 | Iceland | 51-200 | Exact match | 137 contacts → |
“ABOUT http://iceland-drilling.com/ Iceland Drilling Ltd is a leading high technical company in the field of high temperature geothermal drilling and has many decades of experience…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  KENSAkensa.co.ukHQ: Truro, United KingdomReported employees: 51-200 | Truro, United Kingdom | 51-200 | Exact match | 134 contacts → |
“The UK’s heating system is stuck in the past, costing people and the planet too much.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Doğan Jeotermal Groupdoganjeotermal.com.trHQ: Ankara, TürkiyeReported employees: 1,001-5,000 | Ankara, Türkiye | 1,001-5,000 | Exact match | 127 contacts → |
“Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Dandelion Energydandelionenergy.comHQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 124 contacts → |
“Dandelion Energy is the nation’s leading residential geothermal provider, on a mission to make the world’s most efficient heating and cooling technology accessible to everyone.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Jetsonjetsonhome.comHQ: North Vancouver, BC, CanadaReported employees: 201-500 | North Vancouver, BC, Canada | 201-500 | Exact match | 117 contacts → |
“Jetson is on a mission to accelerate the transition of 100M homes across North America away from burning fossil fuels to sustainable energy use.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Brightcore Energybrightcoreenergy.comHQ: Armonk, NY, United StatesReported employees: 51-200 | Armonk, NY, United States | 51-200 | Exact match | 111 contacts → |
“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Metro Groupezmetro.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 110 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 13 |  Haliburton Geothermalhaliburtongeothermal.comHQ: Haliburton, ON, CanadaReported employees: Not recorded | Haliburton, ON, Canada | Not recorded | Exact match | 106 contacts → |
“Haliburton Geothermal has been established to provide economical and environmental choices pertaining to geothermal in Haliburton Country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  VAMOvamo-energy.comHQ: Cologne, GermanyReported employees: 51-200 | Cologne, Germany | 51-200 | Exact match | 104 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Teicosgroupteicosgroup.comHQ: Milan, ItalyReported employees: 51-200 | Milan, Italy | 51-200 | Exact match | 95 contacts → |
“Our organization has a special attitude with the application of innovative solutions and procedures with a value-based approach in building process and in site management.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Energy 1energy-1.netHQ: Bozeman, WY, United StatesReported employees: 201-500 | Bozeman, WY, United States | 201-500 | Exact match | 76 contacts → |
“Energy 1 designs and installs state-of-the-art Mechanical, Electrical, and Plumbing systems that utilize renewable technologies and deliver efficiency, elegance, and legacies our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Enertech Global, LLCenertechusa.comHQ: Greenville, IL, United StatesReported employees: 51-200 | Greenville, IL, United States | 51-200 | Exact match | 76 contacts → |
“Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Rototecrototecgroup.comHQ: Pirkkala, FinlandReported employees: 51-200 | Pirkkala, Finland | 51-200 | Exact match | 72 contacts → |
“Rototec provides geoenergy based heating and cooling for large properties.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Rendescorendesco.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 69 contacts → |
“Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Celsius Energycelsiusenergy.comHQ: Clamart, FranceReported employees: 51-200 | Clamart, France | 51-200 | Exact match | 69 contacts → |
“The Earth can accumulate summer heat and reuse it in the winter, so energy can be stored from season to season.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  DFS Avacdfsavac.comHQ: Valongo, PortugalReported employees: 201-500 | Valongo, Portugal | 201-500 | Exact match | 68 contacts → |
“Fundada em 2001 e com atividade a nível nacional e internacional a DFS AVAC inaugurou o seu negócio na área da comercialização de sistemas de aquecimento e arrefecimento de baixa…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Energy Machinesenergymachines.comHQ: Copenhagen, DenmarkReported employees: 51-200 | Copenhagen, Denmark | 51-200 | Exact match | 63 contacts → |
“Energy Machines is a leading provider of integrated energy systems that decarbonize heating and cooling while reducing operating costs for real estate owners, municipalities, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Roscoe Brown, INCroscoebrown.comHQ: Murfreesboro, TN, United StatesReported employees: 51-200 | Murfreesboro, TN, United States | 51-200 | Exact match | 63 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 24 |  Sierra Pacific Home & Comfort, INCsierrapacifichome.comHQ: Rancho Cordova, CA, United StatesReported employees: 51-200 | Rancho Cordova, CA, United States | 51-200 | Exact match | 62 contacts → |
“When you turn to us for your homes' energy efficient upgrade, you can take comfort in knowing you've made the right choice for your Plumbing, Electrical, Solar or Heating and Air…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Innargiinnargi.comHQ: Copenhagen, DenmarkReported employees: 51-200 | Copenhagen, Denmark | 51-200 | Exact match | 61 contacts → |
“Decarbonising heat - one community at a time.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,909 company matches
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Geothermal retrofit contractors: dataset insights
November 6, 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
2,823 records in the displayed employee bands.
86 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 2,909 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: November 6, 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 ↗
Geothermal retrofit contractors by location
14 lists · largest firstEvery Geothermal retrofit contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal retrofit contractors based in the United States586
- Geothermal retrofit contractors based in France384
- Geothermal retrofit contractors based in the United Kingdom287
- Geothermal retrofit contractors based in Germany192
- Geothermal retrofit contractors based in the Netherlands148
- Geothermal retrofit contractors based in Italy136
- Geothermal retrofit contractors based in Spain121
- Geothermal retrofit contractors based in Canada117
- Geothermal retrofit contractors based in Belgium65
- Geothermal retrofit contractors based in Switzerland59
- Geothermal retrofit contractors based in Australia47
- Geothermal retrofit contractors based in Ireland42
- Geothermal retrofit contractors based in Sweden39
- Geothermal retrofit contractors based in Finland38
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 worldwide?
The saved snapshot records 2,909 matching company records, 17,313 tracked contacts and 4,875 verified emails. The public preview displays 25 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 geothermal retrofit contractors worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/geothermal-retrofit-contractors.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 geothermal retrofit contractors worldwide
RevenueBase records 2,909 matching company records for geothermal retrofit contractors worldwide, with 17,313 tracked contacts and 4,875 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 25 geothermal retrofit contractors worldwide
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 | Homeworks Energy, INChomeworksenergy.com HQ: Medford, MA, United StatesReported employees: 201-500 | Medford, MA, United States | 201-500 | Exact match | 381 contacts → |
“At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Waterfurnace Internationalwaterfurnace.com HQ: Fort Wayne, IN, United StatesReported employees: 201-500 | Fort Wayne, IN, United States | 201-500 | Exact match | 229 contacts → |
“WaterFurnace International, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Saman Groepsamangroep.nl HQ: Zierikzee, NetherlandsReported employees: 201-500 | Zierikzee, Netherlands | 201-500 | Exact match | 221 contacts → |
“De energietransitie is één van de grootste maatschappelijke opgaven, maar wij begrijpen dat jouw wooncomfort net zo belangrijk is.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | M-Energiesm-energies.fr HQ: Ludres Cedex, FranceReported employees: 501-1,000 | Ludres Cedex, France | 501-1,000 | Exact match | 164 contacts → |
“Groupe multirégional indépendant dédié aux activités de génie climatique : • Exploitation de chaufferies collectives toutes énergies et toutes puissances, • Maintenance de…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | IDM Energiesysteme Gmbhidm-energie.at HQ: Matrei, AustriaReported employees: 501-1,000 | Matrei, Austria | 501-1,000 | Exact match | 152 contacts → |
“WIR SORGEN FÜR IHR WOHLBEFINDEN.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Iceland Drilling Company LTDjardboranir.is HQ: IcelandReported employees: 51-200 | Iceland | 51-200 | Exact match | 137 contacts → |
“ABOUT http://iceland-drilling.com/ Iceland Drilling Ltd is a leading high technical company in the field of high temperature geothermal drilling and has many decades of experience…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | KENSAkensa.co.uk HQ: Truro, United KingdomReported employees: 51-200 | Truro, United Kingdom | 51-200 | Exact match | 134 contacts → |
“The UK’s heating system is stuck in the past, costing people and the planet too much.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Doğan Jeotermal Groupdoganjeotermal.com.tr HQ: Ankara, TürkiyeReported employees: 1,001-5,000 | Ankara, Türkiye | 1,001-5,000 | Exact match | 127 contacts → |
“Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Dandelion Energydandelionenergy.com HQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 124 contacts → |
“Dandelion Energy is the nation’s leading residential geothermal provider, on a mission to make the world’s most efficient heating and cooling technology accessible to everyone.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Jetsonjetsonhome.com HQ: North Vancouver, BC, CanadaReported employees: 201-500 | North Vancouver, BC, Canada | 201-500 | Exact match | 117 contacts → |
“Jetson is on a mission to accelerate the transition of 100M homes across North America away from burning fossil fuels to sustainable energy use.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Brightcore Energybrightcoreenergy.com HQ: Armonk, NY, United StatesReported employees: 51-200 | Armonk, NY, United States | 51-200 | Exact match | 111 contacts → |
“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Metro Groupezmetro.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 110 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 13 | Haliburton Geothermalhaliburtongeothermal.com HQ: Haliburton, ON, CanadaReported employees: Not recorded | Haliburton, ON, Canada | Not recorded | Exact match | 106 contacts → |
“Haliburton Geothermal has been established to provide economical and environmental choices pertaining to geothermal in Haliburton Country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | VAMOvamo-energy.com HQ: Cologne, GermanyReported employees: 51-200 | Cologne, Germany | 51-200 | Exact match | 104 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Teicosgroupteicosgroup.com HQ: Milan, ItalyReported employees: 51-200 | Milan, Italy | 51-200 | Exact match | 95 contacts → |
“Our organization has a special attitude with the application of innovative solutions and procedures with a value-based approach in building process and in site management.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Energy 1energy-1.net HQ: Bozeman, WY, United StatesReported employees: 201-500 | Bozeman, WY, United States | 201-500 | Exact match | 76 contacts → |
“Energy 1 designs and installs state-of-the-art Mechanical, Electrical, and Plumbing systems that utilize renewable technologies and deliver efficiency, elegance, and legacies our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Enertech Global, LLCenertechusa.com HQ: Greenville, IL, United StatesReported employees: 51-200 | Greenville, IL, United States | 51-200 | Exact match | 76 contacts → |
“Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Rototecrototecgroup.com HQ: Pirkkala, FinlandReported employees: 51-200 | Pirkkala, Finland | 51-200 | Exact match | 72 contacts → |
“Rototec provides geoenergy based heating and cooling for large properties.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Rendescorendesco.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 69 contacts → |
“Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Celsius Energycelsiusenergy.com HQ: Clamart, FranceReported employees: 51-200 | Clamart, France | 51-200 | Exact match | 69 contacts → |
“The Earth can accumulate summer heat and reuse it in the winter, so energy can be stored from season to season.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | DFS Avacdfsavac.com HQ: Valongo, PortugalReported employees: 201-500 | Valongo, Portugal | 201-500 | Exact match | 68 contacts → |
“Fundada em 2001 e com atividade a nível nacional e internacional a DFS AVAC inaugurou o seu negócio na área da comercialização de sistemas de aquecimento e arrefecimento de baixa…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Energy Machinesenergymachines.com HQ: Copenhagen, DenmarkReported employees: 51-200 | Copenhagen, Denmark | 51-200 | Exact match | 63 contacts → |
“Energy Machines is a leading provider of integrated energy systems that decarbonize heating and cooling while reducing operating costs for real estate owners, municipalities, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Roscoe Brown, INCroscoebrown.com HQ: Murfreesboro, TN, United StatesReported employees: 51-200 | Murfreesboro, TN, United States | 51-200 | Exact match | 63 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 24 | Sierra Pacific Home & Comfort, INCsierrapacifichome.com HQ: Rancho Cordova, CA, United StatesReported employees: 51-200 | Rancho Cordova, CA, United States | 51-200 | Exact match | 62 contacts → |
“When you turn to us for your homes' energy efficient upgrade, you can take comfort in knowing you've made the right choice for your Plumbing, Electrical, Solar or Heating and Air…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Innargiinnargi.com HQ: Copenhagen, DenmarkReported employees: 51-200 | Copenhagen, Denmark | 51-200 | Exact match | 61 contacts → |
“Decarbonising heat - one community at a time.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,909 company matches
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Geothermal retrofit contractors: dataset insights
November 6, 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
2,823 records in the displayed employee bands.
86 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 2,909 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: November 6, 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 ↗
Geothermal retrofit contractors by location
14 lists · largest firstEvery Geothermal retrofit contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal retrofit contractors based in the United States586
- Geothermal retrofit contractors based in France384
- Geothermal retrofit contractors based in the United Kingdom287
- Geothermal retrofit contractors based in Germany192
- Geothermal retrofit contractors based in the Netherlands148
- Geothermal retrofit contractors based in Italy136
- Geothermal retrofit contractors based in Spain121
- Geothermal retrofit contractors based in Canada117
- Geothermal retrofit contractors based in Belgium65
- Geothermal retrofit contractors based in Switzerland59
- Geothermal retrofit contractors based in Australia47
- Geothermal retrofit contractors based in Ireland42
- Geothermal retrofit contractors based in Sweden39
- Geothermal retrofit contractors based in Finland38
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 worldwide?
The saved snapshot records 2,909 matching company records, 17,313 tracked contacts and 4,875 verified emails. The public preview displays 25 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: November 6, 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
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Cite this list
RevenueBase Data Team. Top 25 geothermal retrofit contractors worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/geothermal-retrofit-contractors.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗