Company lists · Data refreshed September 2026
Top 25 Geothermal heating companies based in the United States
RevenueBase identified 441 company matches for geothermal heating companies associated with the United States as of September 2026 and tracks 7,136 professional contacts across them, including 3,457 with verified work emails. Houston is the largest hub.
This list covers company matches for geothermal heating companies associated with the United States, 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 September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest geothermal heating companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,112 contacts → | ||||
Exact match “A business unit of Constellation (NASDAQ: CEG), Calpine Corporation is America’s largest generator of electricity from natural gas and geothermal resources with operations in…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 1,281 contacts → | ||||
Exact match “With over five decades of experience, Ormat Technologies, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 224 contacts → | ||||
Exact match “WaterFurnace International, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 213 contacts → | ||||
Exact match “Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 145 contacts → | ||||
Exact match “We're hiring!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 118 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 110 contacts → | ||||
Exact match “At ENCON, we take care of people.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 108 contacts → | ||||
Exact match “Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 81 contacts → | ||||
Exact match “Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 65 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 62 contacts → | ||||
Exact match “Quaise develops superhot geothermal power plants for a terawatt-scale world.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 52 contacts → | ||||
Exact match “JK Mechanical provides Smart Energy Solutions including Geothermal, Heating, Solar, Electrical, & More in Central Pennsylvania and Maryland.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 50 contacts → | ||||
Exact match “As Denver HVAC specialists and geothermal system experts, we believe in doing things right!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 38 contacts → | ||||
Exact match “Darcy Solutions is on a mission to put Geothermal Everywhere.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 37 contacts → | ||||
Exact match “Forge makes home comfort simple and sustainable with energy-efficient heat pump installations.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 37 contacts → | ||||
Exact match “SolarCraft is 100% Employee-Owned and has been one of the largest green-tech employers based in the North Bay for over 40 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 34 contacts → | ||||
Exact match “XGS Energy is a geothermal energy company founded and headquartered in Palo Alto, CA.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 32 contacts → | ||||
Exact match “John Betlem started the company in 1941, and John Betlem Heating & Cooling, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 32 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 30 contacts → | ||||
Exact match “Solarponics is the Central Coast's go-to renewable energy company, helping residences achieve energy independence for over 45 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 30 contacts → | ||||
Exact match “SES designs, installs, and services solar water heating systems, photovoltaic systems, solar pool heating systems, radiant floor heating systems, and wood-fired boilers.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 30 contacts → | ||||
Exact match “Building Energy is a comprehensive energy services company serving Vermont.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 29 contacts → | ||||
Exact match “Since 1974, Century Mechanical Contractors, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 28 contacts → | ||||
Exact match “Geothermal Systems are becoming a critical component in the effort to make buildings more environmentally friendly.” Recorded in the RevenueBase company graph · Sep 20, 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 heating companies”. 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 441 geothermal heating companies based in the United States
See the full list, filter by size, metro and specialty, and access 3,457 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Geothermal heating companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 441 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “geothermal heating companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 3,457 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 September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “geothermal heating companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many geothermal heating companies are there based in the United States?
RevenueBase identified 441 company matches for geothermal heating companies associated with the United States as of September 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?
Calpine tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most geothermal heating companies?
Houston leads with 16 company records, followed by Austin (7) and Reno (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 3,457 professional contacts with verified work emails tracked across these 441 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 September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 441 geothermal heating companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Geothermal heating companies by geography
- Geothermal heating companies based in Australia
- Geothermal heating companies based in Austria
- Geothermal heating companies based in Belgium
- Geothermal heating companies based in Brazil
- Geothermal heating companies based in Canada
- Geothermal heating companies based in Czechia
- Geothermal heating companies based in Denmark
- Geothermal heating companies based in Finland
- Geothermal heating companies based in France
- Geothermal heating companies based in Germany
- Geothermal heating companies based in India
- Geothermal heating companies based in Ireland
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Geothermal heating companies based in Australia
- Geothermal heating companies based in Austria
- Geothermal heating companies based in Belgium
- Geothermal heating companies based in Brazil
- Geothermal heating companies based in Canada
- Geothermal heating companies based in Czechia
Company intelligence · public preview
Top 25 geothermal heating companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 441 matching company records for geothermal heating companies based in the United States, with 7,136 tracked contacts and 3,457 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: September 20, 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 heating companies based in the United States
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 |  Calpinecalpine.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,112 contacts → |
“A business unit of Constellation (NASDAQ: CEG), Calpine Corporation is America’s largest generator of electricity from natural gas and geothermal resources with operations in…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Ormat Technologies, INCormat.comHQ: Reno, NV, United StatesReported employees: 1,001-5,000 | Reno, NV, United States | 1,001-5,000 | Exact match | 1,281 contacts → |
“With over five decades of experience, Ormat Technologies, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Waterfurnace Internationalwaterfurnace.com HQ: Fort Wayne, IN, United StatesReported employees: 201-500 | Fort Wayne, IN, United States | 201-500 | Exact match | 224 contacts → |
“WaterFurnace International, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Fervo Energyfervoenergy.com HQ: Houston, CA, United StatesReported employees: 51-200 | Houston, CA, United States | 51-200 | Exact match | 213 contacts → |
“Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Rondo Energyrondo.com HQ: Alameda, CA, United StatesReported employees: 51-200 | Alameda, CA, United States | 51-200 | Exact match | 145 contacts → |
“We're hiring!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Dandelion Energydandelionenergy.com HQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 118 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Encon Heating & A Cgoencon.com HQ: Stratford, CT, United StatesReported employees: 201-500 | Stratford, CT, United States | 201-500 | Exact match | 110 contacts → |
“At ENCON, we take care of people.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Brightcore Energybrightcoreenergy.comHQ: Armonk, NY, United StatesReported employees: 51-200 | Armonk, NY, United States | 51-200 | Exact match | 108 contacts → |
“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Enertech Global, LLCenertechusa.com HQ: Greenville, IL, United StatesReported employees: 51-200 | Greenville, IL, United States | 51-200 | Exact match | 81 contacts → |
“Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Roscoe Brown, INCroscoebrown.com HQ: Murfreesboro, TN, United StatesReported employees: 51-200 | Murfreesboro, TN, United States | 51-200 | Exact match | 65 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 11 | Quaise Energyquaise.com HQ: Houston, MA, United StatesReported employees: 51-200 | Houston, MA, United States | 51-200 | Exact match | 62 contacts → |
“Quaise develops superhot geothermal power plants for a terawatt-scale world.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | JK Mechanical, INCjkmechanical.com HQ: Willow Street, PA, United StatesReported employees: 51-200 | Willow Street, PA, United States | 51-200 | Exact match | 52 contacts → |
“JK Mechanical provides Smart Energy Solutions including Geothermal, Heating, Solar, Electrical, & More in Central Pennsylvania and Maryland.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | MAJORmajorheating.com HQ: Wheat Ridge, CO, United StatesReported employees: 11-50 | Wheat Ridge, CO, United States | 11-50 | Exact match | 50 contacts → |
“As Denver HVAC specialists and geothermal system experts, we believe in doing things right!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Darcy Solutionsdarcysolutions.com HQ: New Brighton, MN, United StatesReported employees: 11-50 | New Brighton, MN, United States | 11-50 | Exact match | 38 contacts → |
“Darcy Solutions is on a mission to put Geothermal Everywhere.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | FORGEforgeco.com HQ: Newton, MA, United StatesReported employees: 51-200 | Newton, MA, United States | 51-200 | Exact match | 37 contacts → |
“Forge makes home comfort simple and sustainable with energy-efficient heat pump installations.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Solarcraftsolarcraft.com HQ: Novato, CA, United StatesReported employees: 11-50 | Novato, CA, United States | 11-50 | Exact match | 37 contacts → |
“SolarCraft is 100% Employee-Owned and has been one of the largest green-tech employers based in the North Bay for over 40 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | XGS Energyxgsenergy.com HQ: Palo Alto, CA, United StatesReported employees: 11-50 | Palo Alto, CA, United States | 11-50 | Exact match | 34 contacts → |
“XGS Energy is a geothermal energy company founded and headquartered in Palo Alto, CA.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  John Betlem Heating & Coolingjohnbetlem.comHQ: Rochester, NY, United StatesReported employees: 51-200 | Rochester, NY, United States | 51-200 | Exact match | 32 contacts → |
“John Betlem started the company in 1941, and John Betlem Heating & Cooling, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Lind's Plumbing And Heating, INClindsph.com HQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 32 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Solarponics, INCsolarponics.com HQ: Atascadero, CA, United StatesReported employees: 11-50 | Atascadero, CA, United States | 11-50 | Exact match | 30 contacts → |
“Solarponics is the Central Coast's go-to renewable energy company, helping residences achieve energy independence for over 45 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Sustainable Energy Systems, LLCsustainableenergysystems.net HQ: Frederick, MD, United StatesReported employees: 11-50 | Frederick, MD, United States | 11-50 | Exact match | 30 contacts → |
“SES designs, installs, and services solar water heating systems, photovoltaic systems, solar pool heating systems, radiant floor heating systems, and wood-fired boilers.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Building Energybuildingenergyvt.com HQ: Williston, VT, United StatesReported employees: 11-50 | Williston, VT, United States | 11-50 | Exact match | 30 contacts → |
“Building Energy is a comprehensive energy services company serving Vermont.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Century Mechanical Contractors,inccenturymech.comHQ: Fort Worth, TX, United StatesReported employees: 51-200 | Fort Worth, TX, United States | 51-200 | Exact match | 29 contacts → |
“Since 1974, Century Mechanical Contractors, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Midwest Geothermalmwgeothermal.com HQ: Grand Rapids, MI, United StatesReported employees: 11-50 | Grand Rapids, MI, United States | 11-50 | Exact match | 28 contacts → |
“Geothermal Systems are becoming a critical component in the effort to make buildings more environmentally friendly.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 441 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Geothermal heating companies: dataset insights
September 20, 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
441 records in the displayed employee bands.
0 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 worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 441 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: September 20, 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 ↗
Questions about this company list
What does Exact match mean for geothermal heating companies?
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 heating companies did RevenueBase find based in the United States?
The saved snapshot records 441 matching company records, 7,136 tracked contacts and 3,457 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: September 20, 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
Geothermal heating companies by geography
- Geothermal heating companies based in Australia
- Geothermal heating companies based in Austria
- Geothermal heating companies based in Belgium
- Geothermal heating companies based in Brazil
- Geothermal heating companies based in Canada
- Geothermal heating companies based in Czechia
- Geothermal heating companies based in Denmark
- Geothermal heating companies based in Finland
- Geothermal heating companies based in France
- Geothermal heating companies based in Germany
- Geothermal heating companies based in India
- Geothermal heating companies based in Ireland
Cite this list
RevenueBase Data Team. Top 25 geothermal heating companies based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/geothermal-heating-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Geothermal heating companies based in Australia
- Geothermal heating companies based in Austria
- Geothermal heating companies based in Belgium
- Geothermal heating companies based in Brazil
- Geothermal heating companies based in Canada
- Geothermal heating companies based in Czechia
Company intelligence · public preview
Top 25 geothermal heating companies based in the United States
RevenueBase records 441 matching company records for geothermal heating companies based in the United States, with 7,136 tracked contacts and 3,457 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: September 20, 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 heating companies based in the United States
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 | Calpinecalpine.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,112 contacts → |
“A business unit of Constellation (NASDAQ: CEG), Calpine Corporation is America’s largest generator of electricity from natural gas and geothermal resources with operations in…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Ormat Technologies, INCormat.com HQ: Reno, NV, United StatesReported employees: 1,001-5,000 | Reno, NV, United States | 1,001-5,000 | Exact match | 1,281 contacts → |
“With over five decades of experience, Ormat Technologies, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Waterfurnace Internationalwaterfurnace.com HQ: Fort Wayne, IN, United StatesReported employees: 201-500 | Fort Wayne, IN, United States | 201-500 | Exact match | 224 contacts → |
“WaterFurnace International, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Fervo Energyfervoenergy.com HQ: Houston, CA, United StatesReported employees: 51-200 | Houston, CA, United States | 51-200 | Exact match | 213 contacts → |
“Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Rondo Energyrondo.com HQ: Alameda, CA, United StatesReported employees: 51-200 | Alameda, CA, United States | 51-200 | Exact match | 145 contacts → |
“We're hiring!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Dandelion Energydandelionenergy.com HQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 118 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Encon Heating & A Cgoencon.com HQ: Stratford, CT, United StatesReported employees: 201-500 | Stratford, CT, United States | 201-500 | Exact match | 110 contacts → |
“At ENCON, we take care of people.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Brightcore Energybrightcoreenergy.com HQ: Armonk, NY, United StatesReported employees: 51-200 | Armonk, NY, United States | 51-200 | Exact match | 108 contacts → |
“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Enertech Global, LLCenertechusa.com HQ: Greenville, IL, United StatesReported employees: 51-200 | Greenville, IL, United States | 51-200 | Exact match | 81 contacts → |
“Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Roscoe Brown, INCroscoebrown.com HQ: Murfreesboro, TN, United StatesReported employees: 51-200 | Murfreesboro, TN, United States | 51-200 | Exact match | 65 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 11 | Quaise Energyquaise.com HQ: Houston, MA, United StatesReported employees: 51-200 | Houston, MA, United States | 51-200 | Exact match | 62 contacts → |
“Quaise develops superhot geothermal power plants for a terawatt-scale world.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | JK Mechanical, INCjkmechanical.com HQ: Willow Street, PA, United StatesReported employees: 51-200 | Willow Street, PA, United States | 51-200 | Exact match | 52 contacts → |
“JK Mechanical provides Smart Energy Solutions including Geothermal, Heating, Solar, Electrical, & More in Central Pennsylvania and Maryland.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | MAJORmajorheating.com HQ: Wheat Ridge, CO, United StatesReported employees: 11-50 | Wheat Ridge, CO, United States | 11-50 | Exact match | 50 contacts → |
“As Denver HVAC specialists and geothermal system experts, we believe in doing things right!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Darcy Solutionsdarcysolutions.com HQ: New Brighton, MN, United StatesReported employees: 11-50 | New Brighton, MN, United States | 11-50 | Exact match | 38 contacts → |
“Darcy Solutions is on a mission to put Geothermal Everywhere.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | FORGEforgeco.com HQ: Newton, MA, United StatesReported employees: 51-200 | Newton, MA, United States | 51-200 | Exact match | 37 contacts → |
“Forge makes home comfort simple and sustainable with energy-efficient heat pump installations.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Solarcraftsolarcraft.com HQ: Novato, CA, United StatesReported employees: 11-50 | Novato, CA, United States | 11-50 | Exact match | 37 contacts → |
“SolarCraft is 100% Employee-Owned and has been one of the largest green-tech employers based in the North Bay for over 40 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | XGS Energyxgsenergy.com HQ: Palo Alto, CA, United StatesReported employees: 11-50 | Palo Alto, CA, United States | 11-50 | Exact match | 34 contacts → |
“XGS Energy is a geothermal energy company founded and headquartered in Palo Alto, CA.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | John Betlem Heating & Coolingjohnbetlem.com HQ: Rochester, NY, United StatesReported employees: 51-200 | Rochester, NY, United States | 51-200 | Exact match | 32 contacts → |
“John Betlem started the company in 1941, and John Betlem Heating & Cooling, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Lind's Plumbing And Heating, INClindsph.com HQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 32 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Solarponics, INCsolarponics.com HQ: Atascadero, CA, United StatesReported employees: 11-50 | Atascadero, CA, United States | 11-50 | Exact match | 30 contacts → |
“Solarponics is the Central Coast's go-to renewable energy company, helping residences achieve energy independence for over 45 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Sustainable Energy Systems, LLCsustainableenergysystems.net HQ: Frederick, MD, United StatesReported employees: 11-50 | Frederick, MD, United States | 11-50 | Exact match | 30 contacts → |
“SES designs, installs, and services solar water heating systems, photovoltaic systems, solar pool heating systems, radiant floor heating systems, and wood-fired boilers.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Building Energybuildingenergyvt.com HQ: Williston, VT, United StatesReported employees: 11-50 | Williston, VT, United States | 11-50 | Exact match | 30 contacts → |
“Building Energy is a comprehensive energy services company serving Vermont.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Century Mechanical Contractors,inccenturymech.com HQ: Fort Worth, TX, United StatesReported employees: 51-200 | Fort Worth, TX, United States | 51-200 | Exact match | 29 contacts → |
“Since 1974, Century Mechanical Contractors, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Midwest Geothermalmwgeothermal.com HQ: Grand Rapids, MI, United StatesReported employees: 11-50 | Grand Rapids, MI, United States | 11-50 | Exact match | 28 contacts → |
“Geothermal Systems are becoming a critical component in the effort to make buildings more environmentally friendly.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 441 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Geothermal heating companies: dataset insights
September 20, 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
441 records in the displayed employee bands.
0 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 worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 441 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: September 20, 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 ↗
Questions about this company list
What does Exact match mean for geothermal heating companies?
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 heating companies did RevenueBase find based in the United States?
The saved snapshot records 441 matching company records, 7,136 tracked contacts and 3,457 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: September 20, 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
Geothermal heating companies by geography
- Geothermal heating companies based in Australia
- Geothermal heating companies based in Austria
- Geothermal heating companies based in Belgium
- Geothermal heating companies based in Brazil
- Geothermal heating companies based in Canada
- Geothermal heating companies based in Czechia
- Geothermal heating companies based in Denmark
- Geothermal heating companies based in Finland
- Geothermal heating companies based in France
- Geothermal heating companies based in Germany
- Geothermal heating companies based in India
- Geothermal heating companies based in Ireland
Cite this list
RevenueBase Data Team. Top 25 geothermal heating companies based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/geothermal-heating-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Geothermal heating companies based in Australia
- Geothermal heating companies based in Austria
- Geothermal heating companies based in Belgium
- Geothermal heating companies based in Brazil
- Geothermal heating companies based in Canada
- Geothermal heating companies based in Czechia