Company lists · Data refreshed November 2026
Top 25 Closed loop heat pump companies worldwide
RevenueBase identified 1,068 company matches for closed loop heat pump companies worldwide as of November 2026 and tracks 9,158 professional contacts across them, including 2,472 with verified work emails. The United Kingdom is the largest market and Guangzhou the largest hub.
This list covers company matches for closed 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 closed 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 closed loop heat pump companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 865 contacts → | ||||
Exact match “We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 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 | |||||
| 3 | 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 | |||||
| 4 | 122 contacts → | ||||
Exact match “Qvantum offers heat pumps for the next generation heating and cooling technologies that enables the decarbonization of our cities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 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 | |||||
| 6 | 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 | |||||
| 7 | 102 contacts → | ||||
Exact match “Fundada en el año 2010, Gia Group es una compañía española líder en ventas con presencia a nivel mundial.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 100 contacts → | ||||
Exact match “Die Wärmepumpe ist unsere DNA 🧬 Unsere Vision ist ein ideales Morgen - unabhängig von fossilen Energiequellen Werde auch du Teil der ait Seit 1998 tragen wir mit…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 99 contacts → | ||||
Exact match “Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 90 contacts → | ||||
Exact match “Das Familienunternehmen OCHSNER hat sich als eines der ersten Unternehmen weltweit ab 1978 ausschließlich auf die Entwicklung und Produktion von hocheffizienten…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 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 | |||||
| 12 | 82 contacts → | ||||
Exact match “WHO ARE WE?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 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 | |||||
| 14 | 80 contacts → | ||||
Exact match “Seit über vier Jahrzehnten setzen Kunden auf innovative Energiespartechnik aus dem Hause ONI.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 77 contacts → | ||||
Exact match “Since 2012, we have been designing and manufacturing heat pumps with natural refrigerants, but our history has much deeper roots.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 76 contacts → | ||||
Exact match “Blue Heart Energy is currently developing the first heat pump for residential use based on a Thermo Acoustic (TA) heat engine, a toxic-free, flexible and highly efficient solution.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 74 contacts → | ||||
Exact match “Accelerating the transition to low carbon homes by building the leading heat pump OS for HVAC installers” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 70 contacts → | ||||
Exact match “Heatex is a leading cleantech company that optimizes and develops energy-saving thermodynamic products and solutions, contributing to a sustainable future.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 66 contacts → | ||||
Exact match “For 70 years, Cetetherm has been developing innovative, high performance solutions for the district heating and cooling industry, as well as the collective boiler room…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 62 contacts → | ||||
Exact match “Gradient is transforming home comfort with innovative heat pump technology that reduces carbon emissions without compromising performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 60 contacts → | ||||
Exact match “Weheat is a leader in sustainable heating solutions, specialized in heat pumps.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 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 | |||||
| 23 | 52 contacts → | ||||
Exact match “Vølund Varmeteknik leverer varmetekniske løsninger til forbrugere, landmænd, skoler, institutioner m.m.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 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 | |||||
| 25 | 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 | |||||
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 “closed 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 1,068 closed loop heat pump companies worldwide
See the full list, filter by size, metro and specialty, and access 2,472 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Closed 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 closed loop heat pump companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “closed 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 2,472 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.
Closed loop heat pump companies by location
9 lists · largest firstEvery Closed 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
- Closed loop heat pump companies based in the United Kingdom109
- Closed loop heat pump companies based in France95
- Closed loop heat pump companies based in the United States93
- Closed loop heat pump companies based in Germany91
- Closed loop heat pump companies based in the Netherlands73
- Closed loop heat pump companies based in Canada30
- Closed loop heat pump companies based in Sweden30
- Closed loop heat pump companies based in Australia27
- Closed loop heat pump companies based in Belgium27
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 “closed loop heat pump companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many closed loop heat pump companies are there worldwide?
RevenueBase identified 1,068 company matches for closed 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?
BAXI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most closed loop heat pump companies?
The United Kingdom leads with 109 companies, followed by France (95) and the United States (93). Every closed loop heat pump companies list by country and city is linked on this page.
Which city has the most closed loop heat pump companies?
Guangzhou leads with 13 company records, followed by London (12) and Foshan (8).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,472 professional contacts with verified work emails tracked across these 1,068 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,068 closed 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 closed 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 1,068 matching company records for closed loop heat pump companies worldwide, with 9,158 tracked contacts and 2,472 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 closed 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 |  BAXIbaxi.co.ukHQ: Warwick, United KingdomReported employees: 1,001-5,000 | Warwick, United Kingdom | 1,001-5,000 | Exact match | 865 contacts → |
“We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  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. | |||||
| 3 |  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. | |||||
| 4 |  Qvantum Sverigeqvantum.comHQ: Åstorp, SwedenReported employees: 201-500 | Åstorp, Sweden | 201-500 | Exact match | 122 contacts → |
“Qvantum offers heat pumps for the next generation heating and cooling technologies that enables the decarbonization of our cities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  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. | |||||
| 6 |  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. | |||||
| 7 |  GIA Groupgroupgia.comHQ: Granollers, SpainReported employees: 51-200 | Granollers, Spain | 51-200 | Exact match | 102 contacts → |
“Fundada en el año 2010, Gia Group es una compañía española líder en ventas con presencia a nivel mundial.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Ait-Deutschland Gmbhaitgroup.comHQ: Kasendorf, GermanyReported employees: 1,001-5,000 | Kasendorf, Germany | 1,001-5,000 | Exact match | 100 contacts → |
“Die Wärmepumpe ist unsere DNA 🧬 Unsere Vision ist ein ideales Morgen - unabhängig von fossilen Energiequellen Werde auch du Teil der ait Seit 1998 tragen wir mit…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Vaillant Österreichvaillant.atHQ: Vienna, AustriaReported employees: 201-500 | Vienna, Austria | 201-500 | Exact match | 99 contacts → |
“Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Ochsner Wärmepumpen Gmbhochsner.comHQ: Haag, NetherlandsReported employees: 201-500 | Haag, Netherlands | 201-500 | Exact match | 90 contacts → |
“Das Familienunternehmen OCHSNER hat sich als eines der ersten Unternehmen weltweit ab 1978 ausschließlich auf die Entwicklung und Produktion von hocheffizienten…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  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. | |||||
| 12 |  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. | |||||
| 13 |  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. | |||||
| 14 |  Oni-Wärmetrafo Gmbhoni.deHQ: Lindlar, GermanyReported employees: 201-500 | Lindlar, Germany | 201-500 | Exact match | 80 contacts → |
“Seit über vier Jahrzehnten setzen Kunden auf innovative Energiespartechnik aus dem Hause ONI.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Enerblue S.R.Lenerblue.itHQ: Candiana (pd), ItalyReported employees: 51-200 | Candiana (pd), Italy | 51-200 | Exact match | 77 contacts → |
“Since 2012, we have been designing and manufacturing heat pumps with natural refrigerants, but our history has much deeper roots.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Blueheart Energyblueheartenergy.comHQ: Heemskerk, NetherlandsReported employees: 11-50 | Heemskerk, Netherlands | 11-50 | Exact match | 76 contacts → |
“Blue Heart Energy is currently developing the first heat pump for residential use based on a Thermo Acoustic (TA) heat engine, a toxic-free, flexible and highly efficient solution.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Autarc YC S24autarc.energyHQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 74 contacts → |
“Accelerating the transition to low carbon homes by building the leading heat pump OS for HVAC installers” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Heatexheatex.comHQ: Malmö, SwedenReported employees: 201-500 | Malmö, Sweden | 201-500 | Exact match | 70 contacts → |
“Heatex is a leading cleantech company that optimizes and develops energy-saving thermodynamic products and solutions, contributing to a sustainable future.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Cetethermcetetherm.comHQ: Ronneby, SwedenReported employees: 51-200 | Ronneby, Sweden | 51-200 | Exact match | 66 contacts → |
“For 70 years, Cetetherm has been developing innovative, high performance solutions for the district heating and cooling industry, as well as the collective boiler room…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Gradientgradientcomfort.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 62 contacts → |
“Gradient is transforming home comfort with innovative heat pump technology that reduces carbon emissions without compromising performance.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Weheatweheat.comHQ: Duizel, NetherlandsReported employees: 51-200 | Duizel, Netherlands | 51-200 | Exact match | 60 contacts → |
“Weheat is a leader in sustainable heating solutions, specialized in heat pumps.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  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. | |||||
| 23 |  Vølund Varmeteknikvolundvt.dkHQ: Herning, DenmarkReported employees: 51-200 | Herning, Denmark | 51-200 | Exact match | 52 contacts → |
“Vølund Varmeteknik leverer varmetekniske løsninger til forbrugere, landmænd, skoler, institutioner m.m.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  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. | |||||
| 25 |  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. | |||||
Showing 25 of 1,068 company matches
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Closed 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
1,044 records in the displayed employee bands.
24 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,068 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 ↗
Closed loop heat pump companies by location
9 lists · largest firstEvery Closed 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
- Closed loop heat pump companies based in the United Kingdom109
- Closed loop heat pump companies based in France95
- Closed loop heat pump companies based in the United States93
- Closed loop heat pump companies based in Germany91
- Closed loop heat pump companies based in the Netherlands73
- Closed loop heat pump companies based in Canada30
- Closed loop heat pump companies based in Sweden30
- Closed loop heat pump companies based in Australia27
- Closed loop heat pump companies based in Belgium27
Questions about this company list
What does Exact match mean for closed 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 closed loop heat pump companies did RevenueBase find worldwide?
The saved snapshot records 1,068 matching company records, 9,158 tracked contacts and 2,472 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 closed loop heat pump companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/closed-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 closed loop heat pump companies worldwide
RevenueBase records 1,068 matching company records for closed loop heat pump companies worldwide, with 9,158 tracked contacts and 2,472 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 closed 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 | BAXIbaxi.co.uk HQ: Warwick, United KingdomReported employees: 1,001-5,000 | Warwick, United Kingdom | 1,001-5,000 | Exact match | 865 contacts → |
“We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | 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. | |||||
| 3 | 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. | |||||
| 4 | Qvantum Sverigeqvantum.com HQ: Åstorp, SwedenReported employees: 201-500 | Åstorp, Sweden | 201-500 | Exact match | 122 contacts → |
“Qvantum offers heat pumps for the next generation heating and cooling technologies that enables the decarbonization of our cities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 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. | |||||
| 6 | 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. | |||||
| 7 | GIA Groupgroupgia.com HQ: Granollers, SpainReported employees: 51-200 | Granollers, Spain | 51-200 | Exact match | 102 contacts → |
“Fundada en el año 2010, Gia Group es una compañía española líder en ventas con presencia a nivel mundial.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ait-Deutschland Gmbhaitgroup.com HQ: Kasendorf, GermanyReported employees: 1,001-5,000 | Kasendorf, Germany | 1,001-5,000 | Exact match | 100 contacts → |
“Die Wärmepumpe ist unsere DNA 🧬 Unsere Vision ist ein ideales Morgen - unabhängig von fossilen Energiequellen Werde auch du Teil der ait Seit 1998 tragen wir mit…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Vaillant Österreichvaillant.at HQ: Vienna, AustriaReported employees: 201-500 | Vienna, Austria | 201-500 | Exact match | 99 contacts → |
“Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Ochsner Wärmepumpen Gmbhochsner.com HQ: Haag, NetherlandsReported employees: 201-500 | Haag, Netherlands | 201-500 | Exact match | 90 contacts → |
“Das Familienunternehmen OCHSNER hat sich als eines der ersten Unternehmen weltweit ab 1978 ausschließlich auf die Entwicklung und Produktion von hocheffizienten…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | 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. | |||||
| 12 | 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. | |||||
| 13 | 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. | |||||
| 14 | Oni-Wärmetrafo Gmbhoni.de HQ: Lindlar, GermanyReported employees: 201-500 | Lindlar, Germany | 201-500 | Exact match | 80 contacts → |
“Seit über vier Jahrzehnten setzen Kunden auf innovative Energiespartechnik aus dem Hause ONI.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Enerblue S.R.Lenerblue.it HQ: Candiana (pd), ItalyReported employees: 51-200 | Candiana (pd), Italy | 51-200 | Exact match | 77 contacts → |
“Since 2012, we have been designing and manufacturing heat pumps with natural refrigerants, but our history has much deeper roots.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Blueheart Energyblueheartenergy.com HQ: Heemskerk, NetherlandsReported employees: 11-50 | Heemskerk, Netherlands | 11-50 | Exact match | 76 contacts → |
“Blue Heart Energy is currently developing the first heat pump for residential use based on a Thermo Acoustic (TA) heat engine, a toxic-free, flexible and highly efficient solution.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Autarc YC S24autarc.energy HQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 74 contacts → |
“Accelerating the transition to low carbon homes by building the leading heat pump OS for HVAC installers” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Heatexheatex.com HQ: Malmö, SwedenReported employees: 201-500 | Malmö, Sweden | 201-500 | Exact match | 70 contacts → |
“Heatex is a leading cleantech company that optimizes and develops energy-saving thermodynamic products and solutions, contributing to a sustainable future.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Cetethermcetetherm.com HQ: Ronneby, SwedenReported employees: 51-200 | Ronneby, Sweden | 51-200 | Exact match | 66 contacts → |
“For 70 years, Cetetherm has been developing innovative, high performance solutions for the district heating and cooling industry, as well as the collective boiler room…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Gradientgradientcomfort.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 62 contacts → |
“Gradient is transforming home comfort with innovative heat pump technology that reduces carbon emissions without compromising performance.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Weheatweheat.com HQ: Duizel, NetherlandsReported employees: 51-200 | Duizel, Netherlands | 51-200 | Exact match | 60 contacts → |
“Weheat is a leader in sustainable heating solutions, specialized in heat pumps.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | 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. | |||||
| 23 | Vølund Varmeteknikvolundvt.dk HQ: Herning, DenmarkReported employees: 51-200 | Herning, Denmark | 51-200 | Exact match | 52 contacts → |
“Vølund Varmeteknik leverer varmetekniske løsninger til forbrugere, landmænd, skoler, institutioner m.m.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | 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. | |||||
| 25 | 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. | |||||
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Closed 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
1,044 records in the displayed employee bands.
24 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,068 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 ↗
Closed loop heat pump companies by location
9 lists · largest firstEvery Closed 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
- Closed loop heat pump companies based in the United Kingdom109
- Closed loop heat pump companies based in France95
- Closed loop heat pump companies based in the United States93
- Closed loop heat pump companies based in Germany91
- Closed loop heat pump companies based in the Netherlands73
- Closed loop heat pump companies based in Canada30
- Closed loop heat pump companies based in Sweden30
- Closed loop heat pump companies based in Australia27
- Closed loop heat pump companies based in Belgium27
Questions about this company list
What does Exact match mean for closed 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 closed loop heat pump companies did RevenueBase find worldwide?
The saved snapshot records 1,068 matching company records, 9,158 tracked contacts and 2,472 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
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Cite this list
RevenueBase Data Team. Top 25 closed loop heat pump companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/closed-loop-heat-pump-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗