Company lists · Data refreshed October 2026
Top 25 Geothermal retrofit contractors worldwide
RevenueBase identified 1,742 company matches for geothermal retrofit contractors worldwide as of October 2026 and tracks 9,590 professional contacts across them, including 2,702 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 October 13, 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 | 225 contacts → | ||||
Exact match “WaterFurnace International, Inc.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 2 | 132 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 3 | 130 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 4 | 123 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 5 | 108 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 6 | 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 7 | 103 contacts → | ||||
Exact match “Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 8 | 101 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 9 | 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 | |||||
| 10 | 81 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 11 | 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 12 | 75 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 13 | 64 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 14 | 61 contacts → | ||||
Exact match “Decarbonising heat - one community at a time.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 15 | 61 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 16 | 60 contacts → | ||||
Exact match “Dual Fuel is a Licensed Master Plumber, General Contractor, NYSERDA Real Time Energy Management (RTEM) System and Service Provider, Coned C&I Partner, Coned Multifamily Partner…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 17 | 60 contacts → | ||||
Exact match “Simply Green offers a wide range of options to help you get equipped with reliable, top-quality, high-efficiency heating and cooling systems.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 18 | 56 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 19 | 53 contacts → | ||||
Exact match “For all business inquiries, contact the Geosource team at info@geosourceenergy.com- Devoted to the pursuit of innovation and excellence as a leading geoexchange specialist, we are…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 20 | 52 contacts → | ||||
Exact match “Darcy Solutions is on a mission to put Geothermal Everywhere.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 21 | 52 contacts → | ||||
Exact match “We at Allied Well Drilling are a full service commercial and residential gethermal heating/cooling system installer, specializing in vertically drilled closed loop systems.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 22 | 51 contacts → | ||||
Exact match “As Denver HVAC specialists and geothermal system experts, we believe in doing things right!” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 23 | 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 | |||||
| 24 | 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 13, 2026 · View company records in RevenueBase | |||||
| 25 | 46 contacts → | ||||
Exact match “Electric Ireland Superhomes is a One Stop Shop which looks after all the key stages of a home energy retrofit, from retrofit design through to project completion and management of…” 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 25 of 1,742 geothermal retrofit contractors worldwide
See the full list, filter by size, metro and specialty, and access 2,702 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 Oct 13, 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 2,702 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.
Geothermal retrofit contractors by location
12 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 States411
- Geothermal retrofit contractors based in France201
- Geothermal retrofit contractors based in the United Kingdom136
- Geothermal retrofit contractors based in Canada90
- Geothermal retrofit contractors based in Germany84
- Geothermal retrofit contractors based in the Netherlands70
- Geothermal retrofit contractors based in Spain69
- Geothermal retrofit contractors based in Italy66
- Geothermal retrofit contractors based in Belgium44
- Geothermal retrofit contractors based in Switzerland33
- Geothermal retrofit contractors based in Ireland29
- Geothermal retrofit contractors based in Finland26
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 1,742 company matches for geothermal retrofit contractors worldwide 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?
Waterfurnace International 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 411 companies, followed by France (201) and the United Kingdom (136). 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 13 company records, followed by Calgary (9) and Toronto (9).
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 2,702 professional contacts with verified work emails tracked across these 1,742 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 1,742 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 1,742 matching company records for geothermal retrofit contractors worldwide, with 9,590 tracked contacts and 2,702 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: 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 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 | Waterfurnace Internationalwaterfurnace.com HQ: Fort Wayne, IN, United StatesReported employees: 201-500 | Fort Wayne, IN, United States | 201-500 | Exact match | 225 contacts → |
“WaterFurnace International, Inc.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Iceland Drilling Company LTDjardboranir.is HQ: IcelandReported employees: 51-200 | Iceland | 51-200 | Exact match | 132 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Dandelion Energydandelionenergy.com HQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 130 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Doğan Jeotermal Groupdoganjeotermal.com.tr HQ: Ankara, TürkiyeReported employees: 1,001-5,000 | Ankara, Türkiye | 1,001-5,000 | Exact match | 123 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Metro Groupezmetro.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 108 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 6 | 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Brightcore Energybrightcoreenergy.comHQ: Armonk, NY, United StatesReported employees: 51-200 | Armonk, NY, United States | 51-200 | Exact match | 103 contacts → |
“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Jetsonjetsonhome.com HQ: North Vancouver, BC, CanadaReported employees: 201-500 | North Vancouver, BC, Canada | 201-500 | Exact match | 101 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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. | |||||
| 10 |  Teicosgroupteicosgroup.comHQ: Milan, ItalyReported employees: 51-200 | Milan, Italy | 51-200 | Exact match | 81 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Energy 1energy-1.netHQ: Bozeman, MT, United StatesReported employees: 201-500 | Bozeman, MT, United States | 201-500 | Exact match | 75 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Energy Machinesenergymachines.com HQ: Copenhagen, DenmarkReported employees: 51-200 | Copenhagen, Denmark | 51-200 | Exact match | 64 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Roscoe Brown, INCroscoebrown.com HQ: Murfreesboro, TN, United StatesReported employees: 51-200 | Murfreesboro, TN, United States | 51-200 | Exact match | 61 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | Dual Fueldualfuelcorp.com HQ: Mount Vernon, NY, United StatesReported employees: 51-200 | Mount Vernon, NY, United States | 51-200 | Exact match | 60 contacts → |
“Dual Fuel is a Licensed Master Plumber, General Contractor, NYSERDA Real Time Energy Management (RTEM) System and Service Provider, Coned C&I Partner, Coned Multifamily Partner…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Simply Green Home Services INCmysimplygreen.comHQ: Toronto, ON, CanadaReported employees: 201-500 | Toronto, ON, Canada | 201-500 | Exact match | 60 contacts → |
“Simply Green offers a wide range of options to help you get equipped with reliable, top-quality, high-efficiency heating and cooling systems.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sierra Pacific Home & Comfort, INCsierrapacifichome.com HQ: Rancho Cordova, CA, United StatesReported employees: 51-200 | Rancho Cordova, CA, United States | 51-200 | Exact match | 56 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Geosource Energy INCgeosourceenergy.com HQ: Ancaster, ON, CanadaReported employees: 51-200 | Ancaster, ON, Canada | 51-200 | Exact match | 53 contacts → |
“For all business inquiries, contact the Geosource team at info@geosourceenergy.com- Devoted to the pursuit of innovation and excellence as a leading geoexchange specialist, we are…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Darcy Solutionsdarcysolutions.com HQ: New Brighton, MN, United StatesReported employees: 11-50 | New Brighton, MN, United States | 11-50 | Exact match | 52 contacts → |
“Darcy Solutions is on a mission to put Geothermal Everywhere.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Allied Well Drillingalliedwells.comHQ: Laurel, MD, United StatesReported employees: 51-200 | Laurel, MD, United States | 51-200 | Exact match | 52 contacts → |
“We at Allied Well Drilling are a full service commercial and residential gethermal heating/cooling system installer, specializing in vertically drilled closed loop systems.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | MAJORmajorheating.com HQ: Wheat Ridge, CO, United StatesReported employees: 11-50 | Wheat Ridge, CO, United States | 11-50 | Exact match | 51 contacts → |
“As Denver HVAC specialists and geothermal system experts, we believe in doing things right!” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  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. | |||||
| 24 | CFG Geothermalcfg-geo.fr HQ: Orleans, FranceReported employees: 11-50 | Orleans, France | 11-50 | Exact match | 47 contacts → |
“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 description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Electric Ireland Superhomeselectricirelandsuperhomes.ie HQ: Thurles, IrelandReported employees: 11-50 | Thurles, Ireland | 11-50 | Exact match | 46 contacts → |
“Electric Ireland Superhomes is a One Stop Shop which looks after all the key stages of a home energy retrofit, from retrofit design through to project completion and management of…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,742 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
1,723 records in the displayed employee bands.
19 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 1,742 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 ↗
Geothermal retrofit contractors by location
12 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 States411
- Geothermal retrofit contractors based in France201
- Geothermal retrofit contractors based in the United Kingdom136
- Geothermal retrofit contractors based in Canada90
- Geothermal retrofit contractors based in Germany84
- Geothermal retrofit contractors based in the Netherlands70
- Geothermal retrofit contractors based in Spain69
- Geothermal retrofit contractors based in Italy66
- Geothermal retrofit contractors based in Belgium44
- Geothermal retrofit contractors based in Switzerland33
- Geothermal retrofit contractors based in Ireland29
- Geothermal retrofit contractors based in Finland26
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 1,742 matching company records, 9,590 tracked contacts and 2,702 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: 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.
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Cite this list
RevenueBase Data Team. Top 25 geothermal retrofit contractors worldwide. Snapshot: October 13, 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 1,742 matching company records for geothermal retrofit contractors worldwide, with 9,590 tracked contacts and 2,702 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: 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 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 | Waterfurnace Internationalwaterfurnace.com HQ: Fort Wayne, IN, United StatesReported employees: 201-500 | Fort Wayne, IN, United States | 201-500 | Exact match | 225 contacts → |
“WaterFurnace International, Inc.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Iceland Drilling Company LTDjardboranir.is HQ: IcelandReported employees: 51-200 | Iceland | 51-200 | Exact match | 132 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Dandelion Energydandelionenergy.com HQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 130 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Doğan Jeotermal Groupdoganjeotermal.com.tr HQ: Ankara, TürkiyeReported employees: 1,001-5,000 | Ankara, Türkiye | 1,001-5,000 | Exact match | 123 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Metro Groupezmetro.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 108 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 6 | 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Brightcore Energybrightcoreenergy.com HQ: Armonk, NY, United StatesReported employees: 51-200 | Armonk, NY, United States | 51-200 | Exact match | 103 contacts → |
“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Jetsonjetsonhome.com HQ: North Vancouver, BC, CanadaReported employees: 201-500 | North Vancouver, BC, Canada | 201-500 | Exact match | 101 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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. | |||||
| 10 | Teicosgroupteicosgroup.com HQ: Milan, ItalyReported employees: 51-200 | Milan, Italy | 51-200 | Exact match | 81 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Energy 1energy-1.net HQ: Bozeman, MT, United StatesReported employees: 201-500 | Bozeman, MT, United States | 201-500 | Exact match | 75 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Energy Machinesenergymachines.com HQ: Copenhagen, DenmarkReported employees: 51-200 | Copenhagen, Denmark | 51-200 | Exact match | 64 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Roscoe Brown, INCroscoebrown.com HQ: Murfreesboro, TN, United StatesReported employees: 51-200 | Murfreesboro, TN, United States | 51-200 | Exact match | 61 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | Dual Fueldualfuelcorp.com HQ: Mount Vernon, NY, United StatesReported employees: 51-200 | Mount Vernon, NY, United States | 51-200 | Exact match | 60 contacts → |
“Dual Fuel is a Licensed Master Plumber, General Contractor, NYSERDA Real Time Energy Management (RTEM) System and Service Provider, Coned C&I Partner, Coned Multifamily Partner…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Simply Green Home Services INCmysimplygreen.com HQ: Toronto, ON, CanadaReported employees: 201-500 | Toronto, ON, Canada | 201-500 | Exact match | 60 contacts → |
“Simply Green offers a wide range of options to help you get equipped with reliable, top-quality, high-efficiency heating and cooling systems.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sierra Pacific Home & Comfort, INCsierrapacifichome.com HQ: Rancho Cordova, CA, United StatesReported employees: 51-200 | Rancho Cordova, CA, United States | 51-200 | Exact match | 56 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Geosource Energy INCgeosourceenergy.com HQ: Ancaster, ON, CanadaReported employees: 51-200 | Ancaster, ON, Canada | 51-200 | Exact match | 53 contacts → |
“For all business inquiries, contact the Geosource team at info@geosourceenergy.com- Devoted to the pursuit of innovation and excellence as a leading geoexchange specialist, we are…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Darcy Solutionsdarcysolutions.com HQ: New Brighton, MN, United StatesReported employees: 11-50 | New Brighton, MN, United States | 11-50 | Exact match | 52 contacts → |
“Darcy Solutions is on a mission to put Geothermal Everywhere.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Allied Well Drillingalliedwells.com HQ: Laurel, MD, United StatesReported employees: 51-200 | Laurel, MD, United States | 51-200 | Exact match | 52 contacts → |
“We at Allied Well Drilling are a full service commercial and residential gethermal heating/cooling system installer, specializing in vertically drilled closed loop systems.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | MAJORmajorheating.com HQ: Wheat Ridge, CO, United StatesReported employees: 11-50 | Wheat Ridge, CO, United States | 11-50 | Exact match | 51 contacts → |
“As Denver HVAC specialists and geothermal system experts, we believe in doing things right!” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | 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. | |||||
| 24 | CFG Geothermalcfg-geo.fr HQ: Orleans, FranceReported employees: 11-50 | Orleans, France | 11-50 | Exact match | 47 contacts → |
“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 description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Electric Ireland Superhomeselectricirelandsuperhomes.ie HQ: Thurles, IrelandReported employees: 11-50 | Thurles, Ireland | 11-50 | Exact match | 46 contacts → |
“Electric Ireland Superhomes is a One Stop Shop which looks after all the key stages of a home energy retrofit, from retrofit design through to project completion and management of…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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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
1,723 records in the displayed employee bands.
19 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 1,742 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 ↗
Geothermal retrofit contractors by location
12 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 States411
- Geothermal retrofit contractors based in France201
- Geothermal retrofit contractors based in the United Kingdom136
- Geothermal retrofit contractors based in Canada90
- Geothermal retrofit contractors based in Germany84
- Geothermal retrofit contractors based in the Netherlands70
- Geothermal retrofit contractors based in Spain69
- Geothermal retrofit contractors based in Italy66
- Geothermal retrofit contractors based in Belgium44
- Geothermal retrofit contractors based in Switzerland33
- Geothermal retrofit contractors based in Ireland29
- Geothermal retrofit contractors based in Finland26
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 1,742 matching company records, 9,590 tracked contacts and 2,702 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: 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.
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Cite this list
RevenueBase Data Team. Top 25 geothermal retrofit contractors worldwide. Snapshot: October 13, 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 ↗