Company lists · Data refreshed November 2026
Top 25 Open loop heat pump companies worldwide
RevenueBase identified 834 company matches for open loop heat pump companies worldwide as of November 2026 and tracks 5,621 professional contacts across them, including 1,561 with verified work emails. The United States is the largest market and Guangzhou the largest hub.
This list covers company matches for open loop heat pump companies 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 open loop heat pump companies 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 open loop heat pump companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 195 contacts → | ||||
Exact match “ClimateMaster’s role as a domestic energy and geothermal heating and cooling leader extends back to the late 1950s when the company was first founded in Florida.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 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 | |||||
| 3 | 120 contacts → | ||||
Exact match “CTC är en av Europas ledande tillverkare av värmeprodukter.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 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 | |||||
| 5 | 88 contacts → | ||||
Exact match “ABK-Qviller AS is Norway’s largest importer and competency centre for heat pumps, heat absorbers and air conditioners.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 82 contacts → | ||||
Exact match “WHO ARE WE?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 81 contacts → | ||||
Exact match “Da oltre 40 anni, Fiorini Industries opera nel mercato HVAC & R (Heating Ventilation Air Conditioning & Refrigeration) proponendo a progettisti e costruttori una gamma di prodotti…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 69 contacts → | ||||
Exact match “Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 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 | |||||
| 10 | 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 | |||||
| 11 | 50 contacts → | ||||
Exact match “DOMOTEC AG ist seit 1976 als innovatives Unternehmen im Bereich «Haustechnik» tätig.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 48 contacts → | ||||
Exact match “The Envola System is an innovative, holistic and most sustainable approach to enable smart and efficient HVAC solutions for buildings.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 48 contacts → | ||||
Exact match “Klimadan producerer og installerer kundetilpassede varmepumpeløsninger, af høj kvalitet, til både private, erhverv samt landbrug.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 40 contacts → | ||||
Exact match “Tarjoamme maalämpöä palveluna yrityksille ja taloyhtiöille.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 39 contacts → | ||||
Exact match “Forge makes home comfort simple and sustainable with energy-efficient heat pump installations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 34 contacts → | ||||
Exact match “Die WATERKOTTE GmbH ist mit über 50 Jahren Erfahrung als Hersteller nachhaltiger Energiesysteme auf Basis der Wärmepumpe ein Pionier der Branche.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 33 contacts → | ||||
Exact match “Jsme tu pro vás už od roku 2004 a stále inovujeme a zlepšujeme naše produkty.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 31 contacts → | ||||
Exact match “Spécialistes des systèmes de chauffage basés sur les énergies renouvelables, implantés à Beaucouzé, nous intervenons sur l'ensemble de la région angevine (à Angers, Saumur…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 29 contacts → | ||||
Exact match “Zabýváme se výrobou a prodejem tepelných čerpadel.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 29 contacts → | ||||
Exact match “Green Therma develops next-generation geothermal solutions for district heating and industrial applications, delivering reliable, renewable heat from deep beneath the Earth's…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 28 contacts → | ||||
Exact match “Tom Allen Senera Oy is one of the leading providers of heating and cooling solutions to residential and commercial buildings in Finland.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 28 contacts → | ||||
Exact match “Sedan starten 2003 har ComfortZone AB producerat tusentals värmepumpar som via återförsäljare eller installatörer monterats såväl i Sverige som i Europa.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 26 contacts → | ||||
Exact match “GeoTility has been designing, installing, and servicing heating and cooling systems for more than 30 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 26 contacts → | ||||
Exact match “A Fromtherm é uma fabricante de bomba de calor que está no mercado desde 2004 trazendo inovação e sustentabilidade em seus produtos, impulsionando a Transição Energética.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 25 contacts → | ||||
Exact match “A complete heating concept solution is presented in a Heliotherm heat pump system.” 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 “open loop heat pump 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 834 open loop heat pump companies worldwide
See the full list, filter by size, metro and specialty, and access 1,561 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Open loop heat pump companies 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 open loop heat pump companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “open loop heat pump 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. 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 1,561 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.
Open loop heat pump companies by location
7 lists · largest firstEvery Open loop heat pump companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Open loop heat pump companies based in the United States97
- Open loop heat pump companies based in the United Kingdom78
- Open loop heat pump companies based in France77
- Open loop heat pump companies based in Germany51
- Open loop heat pump companies based in the Netherlands47
- Open loop heat pump companies based in Canada28
- Open loop heat pump companies based in Sweden27
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 “open loop heat pump companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many open loop heat pump companies are there worldwide?
RevenueBase identified 834 company matches for open loop heat pump companies 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?
Climatemaster, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most open loop heat pump companies?
The United States leads with 97 companies, followed by the United Kingdom (78) and France (77). Every open loop heat pump companies list by country and city is linked on this page.
Which city has the most open loop heat pump companies?
Guangzhou leads with 9 company records, followed by Foshan (7) and London (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 1,561 professional contacts with verified work emails tracked across these 834 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 834 open loop heat pump companies 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 open loop heat pump companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 834 matching company records for open loop heat pump companies worldwide, with 5,621 tracked contacts and 1,561 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 open loop heat pump companies 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 |  Climatemaster, INCclimatemaster.comHQ: Oklahoma City, OK, United StatesReported employees: 501-1,000 | Oklahoma City, OK, United States | 501-1,000 | Exact match | 195 contacts → |
“ClimateMaster’s role as a domestic energy and geothermal heating and cooling leader extends back to the late 1950s when the company was first founded in Florida.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  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. | |||||
| 3 |  CTC ABctc.seHQ: Ljungby, SwedenReported employees: 201-500 | Ljungby, Sweden | 201-500 | Exact match | 120 contacts → |
“CTC är en av Europas ledande tillverkare av värmeprodukter.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  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. | |||||
| 5 |  Abk-Qviller ASabkqviller.noHQ: Oslo, NorwayReported employees: 51-200 | Oslo, Norway | 51-200 | Exact match | 88 contacts → |
“ABK-Qviller AS is Norway’s largest importer and competency centre for heat pumps, heat absorbers and air conditioners.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Thermowisethermowise.co.zaHQ: Shakaskraal, South AfricaReported employees: 201-500 | Shakaskraal, South Africa | 201-500 | Exact match | 82 contacts → |
“WHO ARE WE?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Fiorini Industriesfiorini-industries.comHQ: Forlì, ItalyReported employees: 51-200 | Forlì, Italy | 51-200 | Exact match | 81 contacts → |
“Da oltre 40 anni, Fiorini Industries opera nel mercato HVAC & R (Heating Ventilation Air Conditioning & Refrigeration) proponendo a progettisti e costruttori una gamma di prodotti…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Rendescorendesco.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 69 contacts → |
“Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  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. | |||||
| 10 |  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. | |||||
| 11 |  Domotec AGdomotec.chHQ: Aarburg, SwitzerlandReported employees: 51-200 | Aarburg, Switzerland | 51-200 | Exact match | 50 contacts → |
“DOMOTEC AG ist seit 1976 als innovatives Unternehmen im Bereich «Haustechnik» tätig.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Envolaenvola.euHQ: Ulm, GermanyReported employees: 11-50 | Ulm, Germany | 11-50 | Exact match | 48 contacts → |
“The Envola System is an innovative, holistic and most sustainable approach to enable smart and efficient HVAC solutions for buildings.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Klimadan A Sklimadan.dkHQ: Ikast, DenmarkReported employees: 51-200 | Ikast, Denmark | 51-200 | Exact match | 48 contacts → |
“Klimadan producerer og installerer kundetilpassede varmepumpeløsninger, af høj kvalitet, til både private, erhverv samt landbrug.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Geonova OYgeonova.fiHQ: Espoo, FinlandReported employees: 51-200 | Espoo, Finland | 51-200 | Exact match | 40 contacts → |
“Tarjoamme maalämpöä palveluna yrityksille ja taloyhtiöille.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  FORGEforgeco.comHQ: Newton, MA, United StatesReported employees: 51-200 | Newton, MA, United States | 51-200 | Exact match | 39 contacts → |
“Forge makes home comfort simple and sustainable with energy-efficient heat pump installations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Waterkotte Gmbhwaterkotte.deHQ: Herne, GermanyReported employees: 51-200 | Herne, Germany | 51-200 | Exact match | 34 contacts → |
“Die WATERKOTTE GmbH ist mit über 50 Jahren Erfahrung als Hersteller nachhaltiger Energiesysteme auf Basis der Wärmepumpe ein Pionier der Branche.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  ACONDacond.czHQ: Praha 15, Czech RepublicReported employees: 51-200 | Praha 15, Czech Republic | 51-200 | Exact match | 33 contacts → |
“Jsme tu pro vás už od roku 2004 a stále inovujeme a zlepšujeme naše produkty.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  JCM Confortjcmconfort.frHQ: Beaucouzé, FranceReported employees: 11-50 | Beaucouzé, France | 11-50 | Exact match | 31 contacts → |
“Spécialistes des systèmes de chauffage basés sur les énergies renouvelables, implantés à Beaucouzé, nous intervenons sur l'ensemble de la région angevine (à Angers, Saumur…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  AC Heating, Tepelná Čerpadlaac-heating.czHQ: Letkov, Czech RepublicReported employees: 51-200 | Letkov, Czech Republic | 51-200 | Exact match | 29 contacts → |
“Zabýváme se výrobou a prodejem tepelných čerpadel.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Green Thermagreentherma.comHQ: Copenhagen, DenmarkReported employees: 11-50 | Copenhagen, Denmark | 11-50 | Exact match | 29 contacts → |
“Green Therma develops next-generation geothermal solutions for district heating and industrial applications, delivering reliable, renewable heat from deep beneath the Earth's…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  TOM Allen Senera OYtomallensenera.fiHQ: Vantaa, FinlandReported employees: 51-200 | Vantaa, Finland | 51-200 | Exact match | 28 contacts → |
“Tom Allen Senera Oy is one of the leading providers of heating and cooling solutions to residential and commercial buildings in Finland.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Comfortzone ABcomfortzone.seHQ: Stockholm, SwedenReported employees: 51-200 | Stockholm, Sweden | 51-200 | Exact match | 28 contacts → |
“Sedan starten 2003 har ComfortZone AB producerat tusentals värmepumpar som via återförsäljare eller installatörer monterats såväl i Sverige som i Europa.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Geotility Geothermal Installations Corpgeotility.caHQ: Kelowna, BC, CanadaReported employees: 11-50 | Kelowna, BC, Canada | 11-50 | Exact match | 26 contacts → |
“GeoTility has been designing, installing, and servicing heating and cooling systems for more than 30 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Fromtherm Sistemas Térmicosfromtherm.com.brHQ: São José, BrazilReported employees: 11-50 | São José, Brazil | 11-50 | Exact match | 26 contacts → |
“A Fromtherm é uma fabricante de bomba de calor que está no mercado desde 2004 trazendo inovação e sustentabilidade em seus produtos, impulsionando a Transição Energética.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Heliotherm Wärmepumpentechnik Ges.M.B.Hheliotherm.comHQ: Langkampfen, AustriaReported employees: 51-200 | Langkampfen, Austria | 51-200 | Exact match | 25 contacts → |
“A complete heating concept solution is presented in a Heliotherm heat pump system.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 834 company matches
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Open loop heat pump companies: 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
808 records in the displayed employee bands.
26 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 834 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 ↗
Open loop heat pump companies by location
7 lists · largest firstEvery Open loop heat pump companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Open loop heat pump companies based in the United States97
- Open loop heat pump companies based in the United Kingdom78
- Open loop heat pump companies based in France77
- Open loop heat pump companies based in Germany51
- Open loop heat pump companies based in the Netherlands47
- Open loop heat pump companies based in Canada28
- Open loop heat pump companies based in Sweden27
Questions about this company list
What does Exact match mean for open loop heat pump 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 open loop heat pump companies did RevenueBase find worldwide?
The saved snapshot records 834 matching company records, 5,621 tracked contacts and 1,561 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 open loop heat pump companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/open-loop-heat-pump-companies.
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 open loop heat pump companies worldwide
RevenueBase records 834 matching company records for open loop heat pump companies worldwide, with 5,621 tracked contacts and 1,561 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 open loop heat pump companies 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 | Climatemaster, INCclimatemaster.com HQ: Oklahoma City, OK, United StatesReported employees: 501-1,000 | Oklahoma City, OK, United States | 501-1,000 | Exact match | 195 contacts → |
“ClimateMaster’s role as a domestic energy and geothermal heating and cooling leader extends back to the late 1950s when the company was first founded in Florida.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | 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. | |||||
| 3 | CTC ABctc.se HQ: Ljungby, SwedenReported employees: 201-500 | Ljungby, Sweden | 201-500 | Exact match | 120 contacts → |
“CTC är en av Europas ledande tillverkare av värmeprodukter.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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. | |||||
| 5 | Abk-Qviller ASabkqviller.no HQ: Oslo, NorwayReported employees: 51-200 | Oslo, Norway | 51-200 | Exact match | 88 contacts → |
“ABK-Qviller AS is Norway’s largest importer and competency centre for heat pumps, heat absorbers and air conditioners.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Thermowisethermowise.co.za HQ: Shakaskraal, South AfricaReported employees: 201-500 | Shakaskraal, South Africa | 201-500 | Exact match | 82 contacts → |
“WHO ARE WE?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Fiorini Industriesfiorini-industries.com HQ: Forlì, ItalyReported employees: 51-200 | Forlì, Italy | 51-200 | Exact match | 81 contacts → |
“Da oltre 40 anni, Fiorini Industries opera nel mercato HVAC & R (Heating Ventilation Air Conditioning & Refrigeration) proponendo a progettisti e costruttori una gamma di prodotti…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Rendescorendesco.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 69 contacts → |
“Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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. | |||||
| 10 | 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. | |||||
| 11 | Domotec AGdomotec.ch HQ: Aarburg, SwitzerlandReported employees: 51-200 | Aarburg, Switzerland | 51-200 | Exact match | 50 contacts → |
“DOMOTEC AG ist seit 1976 als innovatives Unternehmen im Bereich «Haustechnik» tätig.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Envolaenvola.eu HQ: Ulm, GermanyReported employees: 11-50 | Ulm, Germany | 11-50 | Exact match | 48 contacts → |
“The Envola System is an innovative, holistic and most sustainable approach to enable smart and efficient HVAC solutions for buildings.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Klimadan A Sklimadan.dk HQ: Ikast, DenmarkReported employees: 51-200 | Ikast, Denmark | 51-200 | Exact match | 48 contacts → |
“Klimadan producerer og installerer kundetilpassede varmepumpeløsninger, af høj kvalitet, til både private, erhverv samt landbrug.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Geonova OYgeonova.fi HQ: Espoo, FinlandReported employees: 51-200 | Espoo, Finland | 51-200 | Exact match | 40 contacts → |
“Tarjoamme maalämpöä palveluna yrityksille ja taloyhtiöille.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | FORGEforgeco.com HQ: Newton, MA, United StatesReported employees: 51-200 | Newton, MA, United States | 51-200 | Exact match | 39 contacts → |
“Forge makes home comfort simple and sustainable with energy-efficient heat pump installations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Waterkotte Gmbhwaterkotte.de HQ: Herne, GermanyReported employees: 51-200 | Herne, Germany | 51-200 | Exact match | 34 contacts → |
“Die WATERKOTTE GmbH ist mit über 50 Jahren Erfahrung als Hersteller nachhaltiger Energiesysteme auf Basis der Wärmepumpe ein Pionier der Branche.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | ACONDacond.cz HQ: Praha 15, Czech RepublicReported employees: 51-200 | Praha 15, Czech Republic | 51-200 | Exact match | 33 contacts → |
“Jsme tu pro vás už od roku 2004 a stále inovujeme a zlepšujeme naše produkty.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | JCM Confortjcmconfort.fr HQ: Beaucouzé, FranceReported employees: 11-50 | Beaucouzé, France | 11-50 | Exact match | 31 contacts → |
“Spécialistes des systèmes de chauffage basés sur les énergies renouvelables, implantés à Beaucouzé, nous intervenons sur l'ensemble de la région angevine (à Angers, Saumur…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | AC Heating, Tepelná Čerpadlaac-heating.cz HQ: Letkov, Czech RepublicReported employees: 51-200 | Letkov, Czech Republic | 51-200 | Exact match | 29 contacts → |
“Zabýváme se výrobou a prodejem tepelných čerpadel.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Green Thermagreentherma.com HQ: Copenhagen, DenmarkReported employees: 11-50 | Copenhagen, Denmark | 11-50 | Exact match | 29 contacts → |
“Green Therma develops next-generation geothermal solutions for district heating and industrial applications, delivering reliable, renewable heat from deep beneath the Earth's…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | TOM Allen Senera OYtomallensenera.fi HQ: Vantaa, FinlandReported employees: 51-200 | Vantaa, Finland | 51-200 | Exact match | 28 contacts → |
“Tom Allen Senera Oy is one of the leading providers of heating and cooling solutions to residential and commercial buildings in Finland.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Comfortzone ABcomfortzone.se HQ: Stockholm, SwedenReported employees: 51-200 | Stockholm, Sweden | 51-200 | Exact match | 28 contacts → |
“Sedan starten 2003 har ComfortZone AB producerat tusentals värmepumpar som via återförsäljare eller installatörer monterats såväl i Sverige som i Europa.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Geotility Geothermal Installations Corpgeotility.ca HQ: Kelowna, BC, CanadaReported employees: 11-50 | Kelowna, BC, Canada | 11-50 | Exact match | 26 contacts → |
“GeoTility has been designing, installing, and servicing heating and cooling systems for more than 30 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Fromtherm Sistemas Térmicosfromtherm.com.br HQ: São José, BrazilReported employees: 11-50 | São José, Brazil | 11-50 | Exact match | 26 contacts → |
“A Fromtherm é uma fabricante de bomba de calor que está no mercado desde 2004 trazendo inovação e sustentabilidade em seus produtos, impulsionando a Transição Energética.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Heliotherm Wärmepumpentechnik Ges.M.B.Hheliotherm.com HQ: Langkampfen, AustriaReported employees: 51-200 | Langkampfen, Austria | 51-200 | Exact match | 25 contacts → |
“A complete heating concept solution is presented in a Heliotherm heat pump system.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 834 company matches
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Open loop heat pump companies: 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
808 records in the displayed employee bands.
26 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 834 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 ↗
Open loop heat pump companies by location
7 lists · largest firstEvery Open loop heat pump companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Open loop heat pump companies based in the United States97
- Open loop heat pump companies based in the United Kingdom78
- Open loop heat pump companies based in France77
- Open loop heat pump companies based in Germany51
- Open loop heat pump companies based in the Netherlands47
- Open loop heat pump companies based in Canada28
- Open loop heat pump companies based in Sweden27
Questions about this company list
What does Exact match mean for open loop heat pump 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 open loop heat pump companies did RevenueBase find worldwide?
The saved snapshot records 834 matching company records, 5,621 tracked contacts and 1,561 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 open loop heat pump companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/open-loop-heat-pump-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗