Company lists · Data refreshed September 2026
Top 25 Geothermal hvac contractors based in the United Kingdom
RevenueBase identified 478 geothermal hvac contractors headquartered in the United Kingdom as of September 2026 and tracks 2,676 professional contacts across them, including 892 with verified work emails. London is the largest hub.
This list covers geothermal hvac contractors headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest geothermal hvac contractors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 97 contacts → | ||||
Partial evidence “Daikin Applied (UK) Ltd (formerly McQuay UK Ltd) is the market leader in energy-efficient end-to-end HVAC solutions, including AHU and chiller products, heat pumps, service and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 85 contacts → | ||||
Indirect evidence “CPS Building Services Ltd are experts in design, installation and maintenance of all mechanical and electrical services including renewables.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 70 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 60 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 54 contacts → | ||||
Partial evidence “With over 30 years of expertise, Cooltherm delivers sustainable HVAC solutions across healthcare, education, construction, data centres, factories & manufacturing, and warehouse &…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 53 contacts → | ||||
Indirect evidence “Heatforce has evolved through word of mouth and customer recommendations, growing into a company that now employs 120 dedicated staff with 40 years of expertise.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 40 contacts → | ||||
Indirect evidence “Lochinvar designs, manufactures and distributes a comprehensive range of high efficiency gas fired water heaters and boilers for commercial and industrial applications.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 33 contacts → | ||||
Partial evidence “Professional service supplying, installing and maintaining energy efficient HVAC systems.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 30 contacts → | ||||
Indirect evidence “The Reina Group was founded in 2003 and through our core company values, expertise and impassioned commitment to provide the best renewable, sustainable, viable and efficient…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 28 contacts → | ||||
Indirect evidence “Oceanair is an award-winning distributor of air conditioning and heating products.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 26 contacts → | ||||
Indirect evidence “As a market leader in providing energy efficient heating and ventilation solutions, Johnson & Starley has an impressive portfolio of products.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 24 contacts → | ||||
Indirect evidence “Taranis engineering was formed in October 2013 by the former director shareholders of JCW air-conditioning together with Jon Salter, John Lawrence and Alex Bond.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 24 contacts → | ||||
Indirect evidence “At Aircon Services, we’ve been helping companies reduce their energy costs whilst ensuring their businesses are kept cool for over 30 years.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 21 contacts → | ||||
Indirect evidence “We are a Midlands based business, that recommends and installs the right equipment to improves your business's profitability and carbon usage.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 19 contacts → | ||||
Indirect evidence “MACBROOKGAS LTD is a heating and Insulation company based out of United Kingdom.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 17 contacts → | ||||
Partial evidence “Your HVAC, Gas and Mechanical all under one roof.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 17 contacts → | ||||
Indirect evidence “Our aim is to provide renewable energy systems for properties that would clearly benefit from them.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 contacts → | ||||
Indirect evidence “Jet Environmental designs, manufactures, installs and maintains heating, ventilation and cooling systems for large volume, industrial, commercial warehouses.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 16 contacts → | ||||
Indirect evidence “Born in Yorkshire.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 15 contacts → | ||||
Indirect evidence “IMS Heat Pumps designs and installs air source, ground source and water source heat pump systems for self-build, renovation, retrofit, custom-build and new-build projects across…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 14 contacts → | ||||
Indirect evidence “Better Planet was founded in 2004 with a vision to make it easier and more affordable to use green alternatives for heating and electricity.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 14 contacts → | ||||
Indirect evidence “Paynes has been established since 1982, as plumbing and heating specialists.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 14 contacts → | ||||
Indirect evidence “Nicholls Boreholes & Ground Source is an established, industry leading, family-run, specialist drilling company.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 14 contacts → | ||||
Indirect evidence “We do it all.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 14 contacts → | ||||
Partial evidence “We are an award-winning geothermal company based in Edinburgh, Scotland and a leading specialist in all aspects of the UK’s geothermal resources.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: geothermal hvac contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names geothermal hvac contractors.
- Partial evidence
- Its own public description names part of geothermal hvac contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name geothermal hvac contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 478 geothermal hvac contractors based in the United Kingdom
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Geothermal hvac contractors based in the United Kingdom at a glance
As of Sep 16, 2026Companies by employee count
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 478 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among geothermal hvac contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “geothermal hvac contractors”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names geothermal hvac contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among geothermal hvac contractors, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 892 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Geothermal hvac contractors by metro
- Geothermal hvac contractors in London36
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names geothermal hvac contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many geothermal hvac contractors are there based in the United Kingdom?
RevenueBase identified 478 geothermal hvac contractors headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Daikin Applied UK LTD, headquartered in Cramlington, tops this list with the largest team on record.
Which city has the most geothermal hvac contractors?
London leads with 36 headquartered companies, followed by Glasgow (6) and Leeds (6).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 892 verified decision-maker contacts tracked across these 478 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
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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 Smart Search, 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.
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