Company lists · Data refreshed October 2026

Top 25 Geothermal heating cooling manufacturers based in the United Kingdom

RevenueBase identified 300 company matches for geothermal heating cooling manufacturers associated with the United Kingdom as of October 2026 and tracks 4,440 professional contacts across them, including 1,080 with verified work emails. London is the largest hub.

This list covers company matches for geothermal heating cooling manufacturers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 13, 2026.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 13, 2026 How this list was built
300Companies
4,440Contacts tracked
1,080Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest geothermal heating cooling manufacturers based in the United Kingdom

Ranked by team size
Top 25 of 300 company matches for geothermal heating cooling manufacturers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 13, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWarwick, United KingdomHQ recorded Oct 13, 20261,001-5,000884 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 · Oct 13, 2026 · View company records in RevenueBase
2Exact matchSouthampton, United KingdomHQ recorded Oct 13, 2026501-1,000195 contacts →

Exact match

“For over 75 years, Dimplex has been the trusted name for electric heating.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
3Exact matchBelper, United KingdomHQ recorded Oct 13, 2026501-1,000190 contacts →

Exact match

“What does it take to deliver confidence at every stage of the heating journey?”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
4Exact matchSwindon, United KingdomHQ recorded Oct 13, 202651-200120 contacts →

Exact match

“We are a leading supplier of sustainable heating systems, including HVO boilers, air source heat pumps, solar thermal, hot water storage cylinders, aluminium radiators and…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
5Exact matchWoking, United KingdomHQ recorded Oct 13, 202651-20099 contacts →

Exact match

“SAV Systems is an established provider of energy-efficient heating and ventilation solutions.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
6Exact matchHoniton, United KingdomHQ recorded Oct 13, 202651-20071 contacts →

Exact match

“As the UK's largest supplier of warm water underfloor heating and integrated renewables, Nu‑Heat delivers fully designed, energy efficient systems to installers, housebuilders…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
7Exact matchIlminster, United KingdomHQ recorded Oct 13, 202651-20069 contacts →

Exact match

“Powrmatic is a leading manufacturer and solution provider of advanced HVAC systems, including warm air heating, radiant heating, electric and water-based systems, as well as…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Oct 13, 202651-20066 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 · Oct 13, 2026 · View company records in RevenueBase
9Exact matchBridgeyate, United KingdomHQ recorded Oct 13, 202651-20052 contacts →

Exact match

“With over 30 years of expertise, Cooltherm delivers sustainable HVAC solutions across healthcare, education, construction, data centres, factories & manufacturing, and warehouse &…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
10Exact matchHull, United KingdomHQ recorded Oct 13, 202651-20049 contacts →

Exact match

“Hamworthy Heating is a British manufacturer and supplier of commercial heating and hot water products.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
11Exact matchStevenage, United KingdomHQ recorded Oct 13, 202611-5046 contacts →

Exact match

“Elecro Engineering are considered one of the leading international manufacturers and specialists in the field of swimming pool water heating.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
12Exact matchHertfordshire, United KingdomHQ recorded Oct 13, 202611-5044 contacts →

Exact match

“For over 40 years, Vokèra has been a trusted name in home heating across the UK and Ireland, delivering reliable, energy efficient solutions for domestic and light commercial…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
13Exact matchTelford, United KingdomHQ recorded Oct 13, 202651-20043 contacts →

Exact match

“Telford Copper & Stainless Cylinders Ltd is a hot water storage and electric heater cylinder manufacturing company based in Telford Shropshire.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
14Exact matchSouthampton, United KingdomHQ recorded Oct 13, 202651-20042 contacts →

Exact match

“GDC is the holding company for some of the best known brands in the heating industry, including Dimplex, Creda NOBO, Faber, Robinson Willey, Valor, Wonderfire, Glen, Unidare…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
15Exact matchLeicester, United KingdomHQ recorded Oct 13, 202651-20039 contacts →

Exact match

“SPC is a British manufacturer specialising in supplying heating and cooling solutions.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Oct 13, 202611-5037 contacts →

Exact match

“Artus Air is an Air Tech company dedicated to improving the way buildings are cooled and heated, globally by reducing carbon impact and improving the comfort of occupants.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
17Exact matchBanbury, United KingdomHQ recorded Oct 13, 202611-5036 contacts →

Exact match

“Lochinvar designs, manufactures and distributes a comprehensive range of high efficiency gas fired water heaters and boilers for commercial and industrial applications.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
18Exact matchDunfermline, United KingdomHQ recorded Oct 13, 202651-20032 contacts →

Exact match

“BUILT TO LAST ATAG truly is a unique company.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
19Exact matchAndover, United KingdomHQ recorded Oct 13, 202611-5032 contacts →

Exact match

“Since 1996, our high-quality products, commitment to UK manufacturing and outstanding customer service have put us at the forefront of the heating and ventilation industry.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
20Exact matchBromborough, United KingdomHQ recorded Oct 13, 202611-5031 contacts →

Exact match

“STIEBEL ELTRON UK is a leading manufacturer of premium heat pumps and renewable heating solutions, electric hot water and room heating and ventilation, supplying high-quality…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
21Exact matchWilland, United KingdomHQ recorded Oct 13, 202611-5030 contacts →

Exact match

“GRE is a privately owned business based in the UK.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
22Exact matchMansfield, United KingdomHQ recorded Oct 13, 202611-5029 contacts →

Exact match

“Oceanair is an award-winning distributor of air conditioning and heating products.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
23Exact matchNorthampton, United KingdomHQ recorded Oct 13, 202651-20029 contacts →

Exact match

“As a market leader in providing energy efficient heating and ventilation solutions, Johnson & Starley has an impressive portfolio of products.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
24Exact matchFarnborough, United KingdomHQ recorded Oct 13, 202611-5026 contacts →

Exact match

“Strebel is one of Europe's leading suppliers of commercial heating and hot water solutions.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
25Exact matchLedbury, United KingdomHQ recorded Oct 13, 202611-5026 contacts →

Exact match

“Ensuring a better indoor climate without damaging the outdoor climate.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase

Showing 25 of 300 geothermal heating cooling manufacturers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,080 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Geothermal heating cooling manufacturers based in the United Kingdom at a glance

As of Oct 13, 2026
24.3%Verified-email coverage
14.8Average contacts per company
11-50Median size (employees)
7.7%Largest-city concentration · London
Oct 13, 2026Page data refreshed

Companies by employee count

1-10
145
11-50
95
51-200
36
201-500
6
501-1,000
4
1,001-5,000
4
5,001-10,000
2
10001+
2

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 300 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “geothermal heating cooling manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 1,080 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 13, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “geothermal heating cooling manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geothermal heating cooling manufacturers are there based in the United Kingdom?

RevenueBase identified 300 company matches for geothermal heating cooling manufacturers associated with the United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

BAXI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most geothermal heating cooling manufacturers?

London leads with 23 company records, followed by Derby (6) and Leicester (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 1,080 professional contacts with verified work emails tracked across these 300 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 13, 2026.

Ready to reach these companies? Verified emails and direct dials for all 300 geothermal heating cooling manufacturers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.