Company lists · Data refreshed November 2026
Top 25 Residential geothermal contractors worldwide
RevenueBase identified 1,690 company matches for residential geothermal contractors worldwide as of November 2026 and tracks 10,019 professional contacts across them, including 2,537 with verified work emails. The United States is the largest market and Madrid the largest hub.
This list covers company matches for residential geothermal 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 residential geothermal 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 residential geothermal contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 229 contacts → | ||||
Exact match “WaterFurnace International, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 173 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 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 | |||||
| 4 | 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 | |||||
| 5 | 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 | |||||
| 6 | 110 contacts → | ||||
Exact match “Jon Wayne Service Company is San Antonio's largest residential heating, air conditioning, plumbing, and electrical contractor.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 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 | |||||
| 8 | 93 contacts → | ||||
Exact match “ENCON Heating & A/C provides engineering, installation, and maintenance of HVAC systems for both commercial and custom residential applications.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 92 contacts → | ||||
Exact match “CASA Mechanical is owned and operated by the W.G.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 89 contacts → | ||||
Exact match “Halco is a highly accredited, national award-winning contractor that has been providing high-quality solutions to residential and commercial clients since 1984.” Recorded in the RevenueBase company graph · Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 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 | |||||
| 13 | 63 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 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 | |||||
| 15 | 61 contacts → | ||||
Exact match “Dual Fuel is an integrated mechanical and energy contractor serving multi-family and commercial buildings in the New York City metro area.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 61 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 57 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 55 contacts → | ||||
Exact match “Arch Solar is a full-service solar contractor based in Plymouth, WI.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 55 contacts → | ||||
Exact match “Darcy Solutions is on a mission to put Geothermal Everywhere.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 55 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 54 contacts → | ||||
Exact match “Maynard is a company with one focus: to be the community leader in climate solutions for Middle Tennessee.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 52 contacts → | ||||
Exact match “As Denver HVAC specialists and geothermal system experts, we believe in doing things right!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 50 contacts → | ||||
Exact match “We are a full service HVAC contractor employing a highly skilled team of professionals trained in all aspects from proactive preventive maintenance through design/build and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 47 contacts → | ||||
Exact match “Diverso Energy is North America’s first fully vertically integrated geothermal utility company, helping developers, building owners, and investors deliver low-carbon heating and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 44 contacts → | ||||
Exact match “asi hastings is the larges residential retrofit HVAC contractor in san diego.We have also entered into a partnership with green homes america the larges home energy retrofit…” 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 “residential geothermal 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 1,690 residential geothermal contractors worldwide
See the full list, filter by size, metro and specialty, and access 2,537 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Residential geothermal 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 residential geothermal contractors are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “residential geothermal 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 2,537 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.
Residential geothermal contractors by location
10 lists · largest firstEvery Residential geothermal contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Residential geothermal contractors based in the United States657
- Residential geothermal contractors based in France147
- Residential geothermal contractors based in Canada93
- Residential geothermal contractors based in the United Kingdom74
- Residential geothermal contractors based in the Netherlands72
- Residential geothermal contractors based in Spain60
- Residential geothermal contractors based in Germany52
- Residential geothermal contractors based in Belgium38
- Residential geothermal contractors based in Australia30
- Residential geothermal contractors based in Finland29
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 “residential geothermal contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many residential geothermal contractors are there worldwide?
RevenueBase identified 1,690 company matches for residential geothermal 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?
Waterfurnace International tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most residential geothermal contractors?
The United States leads with 657 companies, followed by France (147) and Canada (93). Every residential geothermal contractors list by country and city is linked on this page.
Which city has the most residential geothermal contractors?
Madrid leads with 7 company records, followed by Calgary (6) and Rochester (6).
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 2,537 professional contacts with verified work emails tracked across these 1,690 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 1,690 residential geothermal 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 residential geothermal 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 1,690 matching company records for residential geothermal contractors worldwide, with 10,019 tracked contacts and 2,537 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 residential geothermal 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.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. | |||||
| 2 | Marshalls INCmarshallsinc.com HQ: Lynnwood, WA, United StatesReported employees: Not recorded | Lynnwood, WA, United States | Not recorded | Exact match | 173 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 |  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. | |||||
| 4 |  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. | |||||
| 5 |  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. | |||||
| 6 |  JON Wayne Service Companyjonwayne.comHQ: San Antonio, TX, United StatesReported employees: 51-200 | San Antonio, TX, United States | 51-200 | Exact match | 110 contacts → |
“Jon Wayne Service Company is San Antonio's largest residential heating, air conditioning, plumbing, and electrical contractor.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  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. | |||||
| 8 |  Encon Heating & A Cgoencon.comHQ: Stratford, CT, United StatesReported employees: 201-500 | Stratford, CT, United States | 201-500 | Exact match | 93 contacts → |
“ENCON Heating & A/C provides engineering, installation, and maintenance of HVAC systems for both commercial and custom residential applications.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Casa Mechanical Servicescasamechanical.comHQ: Round Rock, TX, United StatesReported employees: 51-200 | Round Rock, TX, United States | 51-200 | Exact match | 92 contacts → |
“CASA Mechanical is owned and operated by the W.G.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  HALCOhalcoenergy.comHQ: Phelps, NY, United StatesReported employees: 51-200 | Phelps, NY, United States | 51-200 | Exact match | 89 contacts → |
“Halco is a highly accredited, national award-winning contractor that has been providing high-quality solutions to residential and commercial clients since 1984.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  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. | |||||
| 12 |  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. | |||||
| 13 |  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. | |||||
| 14 |  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. | |||||
| 15 |  Dual Fueldualfuelcorp.comHQ: Mount Vernon, NY, United StatesReported employees: 51-200 | Mount Vernon, NY, United States | 51-200 | Exact match | 61 contacts → |
“Dual Fuel is an integrated mechanical and energy contractor serving multi-family and commercial buildings in the New York City metro area.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Simply Green Home Services INCmysimplygreen.comHQ: Toronto, ON, CanadaReported employees: 201-500 | Toronto, ON, Canada | 201-500 | Exact match | 61 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Geosource Energy INCgeosourceenergy.comHQ: Ancaster, ON, CanadaReported employees: 51-200 | Ancaster, ON, Canada | 51-200 | Exact match | 57 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  ARCHarchelec.comHQ: Plymouth, WI, United StatesReported employees: 51-200 | Plymouth, WI, United States | 51-200 | Exact match | 55 contacts → |
“Arch Solar is a full-service solar contractor based in Plymouth, WI.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Darcy Solutionsdarcysolutions.comHQ: New Brighton, MN, United StatesReported employees: 11-50 | New Brighton, MN, United States | 11-50 | Exact match | 55 contacts → |
“Darcy Solutions is on a mission to put Geothermal Everywhere.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Allied Well Drillingalliedwells.comHQ: Laurel, PA, United StatesReported employees: 51-200 | Laurel, PA, United States | 51-200 | Exact match | 55 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Maynardthemaynardman.comHQ: Nashville, TN, United StatesReported employees: 51-200 | Nashville, TN, United States | 51-200 | Exact match | 54 contacts → |
“Maynard is a company with one focus: to be the community leader in climate solutions for Middle Tennessee.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  MAJORmajorheating.comHQ: Wheat Ridge, CO, United StatesReported employees: 11-50 | Wheat Ridge, CO, United States | 11-50 | Exact match | 52 contacts → |
“As Denver HVAC specialists and geothermal system experts, we believe in doing things right!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Campbell INCcampbellinc.comHQ: Northwood, OH, United StatesReported employees: 51-200 | Northwood, OH, United States | 51-200 | Exact match | 50 contacts → |
“We are a full service HVAC contractor employing a highly skilled team of professionals trained in all aspects from proactive preventive maintenance through design/build and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Diverso Energydiversoenergy.comHQ: Toronto, ON, CanadaReported employees: 51-200 | Toronto, ON, Canada | 51-200 | Exact match | 47 contacts → |
“Diverso Energy is North America’s first fully vertically integrated geothermal utility company, helping developers, building owners, and investors deliver low-carbon heating and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  ASI Hastings Heating And AIR Green Homes America Home Performance Contractingasiheatingandair.comHQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 44 contacts → |
“asi hastings is the larges residential retrofit HVAC contractor in san diego.We have also entered into a partnership with green homes america the larges home energy retrofit…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,690 company matches
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Residential geothermal 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
1,645 records in the displayed employee bands.
45 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 1,690 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 ↗
Residential geothermal contractors by location
10 lists · largest firstEvery Residential geothermal contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Residential geothermal contractors based in the United States657
- Residential geothermal contractors based in France147
- Residential geothermal contractors based in Canada93
- Residential geothermal contractors based in the United Kingdom74
- Residential geothermal contractors based in the Netherlands72
- Residential geothermal contractors based in Spain60
- Residential geothermal contractors based in Germany52
- Residential geothermal contractors based in Belgium38
- Residential geothermal contractors based in Australia30
- Residential geothermal contractors based in Finland29
Questions about this company list
What does Exact match mean for residential geothermal 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 residential geothermal contractors did RevenueBase find worldwide?
The saved snapshot records 1,690 matching company records, 10,019 tracked contacts and 2,537 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.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 residential geothermal contractors worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/residential-geothermal-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 residential geothermal contractors worldwide
RevenueBase records 1,690 matching company records for residential geothermal contractors worldwide, with 10,019 tracked contacts and 2,537 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 residential geothermal 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 | 229 contacts → |
“WaterFurnace International, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Marshalls INCmarshallsinc.com HQ: Lynnwood, WA, United StatesReported employees: Not recorded | Lynnwood, WA, United States | Not recorded | Exact match | 173 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 | 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. | |||||
| 4 | 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. | |||||
| 5 | 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. | |||||
| 6 | JON Wayne Service Companyjonwayne.com HQ: San Antonio, TX, United StatesReported employees: 51-200 | San Antonio, TX, United States | 51-200 | Exact match | 110 contacts → |
“Jon Wayne Service Company is San Antonio's largest residential heating, air conditioning, plumbing, and electrical contractor.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | 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. | |||||
| 8 | Encon Heating & A Cgoencon.com HQ: Stratford, CT, United StatesReported employees: 201-500 | Stratford, CT, United States | 201-500 | Exact match | 93 contacts → |
“ENCON Heating & A/C provides engineering, installation, and maintenance of HVAC systems for both commercial and custom residential applications.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Casa Mechanical Servicescasamechanical.com HQ: Round Rock, TX, United StatesReported employees: 51-200 | Round Rock, TX, United States | 51-200 | Exact match | 92 contacts → |
“CASA Mechanical is owned and operated by the W.G.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HALCOhalcoenergy.com HQ: Phelps, NY, United StatesReported employees: 51-200 | Phelps, NY, United States | 51-200 | Exact match | 89 contacts → |
“Halco is a highly accredited, national award-winning contractor that has been providing high-quality solutions to residential and commercial clients since 1984.” Recorded description excerpt · November 6, 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | 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. | |||||
| 13 | 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. | |||||
| 14 | 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. | |||||
| 15 | Dual Fueldualfuelcorp.com HQ: Mount Vernon, NY, United StatesReported employees: 51-200 | Mount Vernon, NY, United States | 51-200 | Exact match | 61 contacts → |
“Dual Fuel is an integrated mechanical and energy contractor serving multi-family and commercial buildings in the New York City metro area.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Simply Green Home Services INCmysimplygreen.com HQ: Toronto, ON, CanadaReported employees: 201-500 | Toronto, ON, Canada | 201-500 | Exact match | 61 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Geosource Energy INCgeosourceenergy.com HQ: Ancaster, ON, CanadaReported employees: 51-200 | Ancaster, ON, Canada | 51-200 | Exact match | 57 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | ARCHarchelec.com HQ: Plymouth, WI, United StatesReported employees: 51-200 | Plymouth, WI, United States | 51-200 | Exact match | 55 contacts → |
“Arch Solar is a full-service solar contractor based in Plymouth, WI.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Darcy Solutionsdarcysolutions.com HQ: New Brighton, MN, United StatesReported employees: 11-50 | New Brighton, MN, United States | 11-50 | Exact match | 55 contacts → |
“Darcy Solutions is on a mission to put Geothermal Everywhere.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Allied Well Drillingalliedwells.com HQ: Laurel, PA, United StatesReported employees: 51-200 | Laurel, PA, United States | 51-200 | Exact match | 55 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Maynardthemaynardman.com HQ: Nashville, TN, United StatesReported employees: 51-200 | Nashville, TN, United States | 51-200 | Exact match | 54 contacts → |
“Maynard is a company with one focus: to be the community leader in climate solutions for Middle Tennessee.” Recorded description excerpt · November 6, 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 | 52 contacts → |
“As Denver HVAC specialists and geothermal system experts, we believe in doing things right!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Campbell INCcampbellinc.com HQ: Northwood, OH, United StatesReported employees: 51-200 | Northwood, OH, United States | 51-200 | Exact match | 50 contacts → |
“We are a full service HVAC contractor employing a highly skilled team of professionals trained in all aspects from proactive preventive maintenance through design/build and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Diverso Energydiversoenergy.com HQ: Toronto, ON, CanadaReported employees: 51-200 | Toronto, ON, Canada | 51-200 | Exact match | 47 contacts → |
“Diverso Energy is North America’s first fully vertically integrated geothermal utility company, helping developers, building owners, and investors deliver low-carbon heating and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | ASI Hastings Heating And AIR Green Homes America Home Performance Contractingasiheatingandair.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 44 contacts → |
“asi hastings is the larges residential retrofit HVAC contractor in san diego.We have also entered into a partnership with green homes america the larges home energy retrofit…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Residential geothermal 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
1,645 records in the displayed employee bands.
45 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 1,690 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 ↗
Residential geothermal contractors by location
10 lists · largest firstEvery Residential geothermal contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Residential geothermal contractors based in the United States657
- Residential geothermal contractors based in France147
- Residential geothermal contractors based in Canada93
- Residential geothermal contractors based in the United Kingdom74
- Residential geothermal contractors based in the Netherlands72
- Residential geothermal contractors based in Spain60
- Residential geothermal contractors based in Germany52
- Residential geothermal contractors based in Belgium38
- Residential geothermal contractors based in Australia30
- Residential geothermal contractors based in Finland29
Questions about this company list
What does Exact match mean for residential geothermal 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 residential geothermal contractors did RevenueBase find worldwide?
The saved snapshot records 1,690 matching company records, 10,019 tracked contacts and 2,537 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 residential geothermal contractors worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/residential-geothermal-contractors.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗