Company lists · Data refreshed November 2026

Top 25 Open loop heat pump companies based in the United Kingdom

RevenueBase identified 78 company matches for open loop heat pump companies associated with the United Kingdom as of November 2026 and tracks 482 professional contacts across them, including 188 with verified work emails. London is the largest hub.

This list covers company matches for open loop heat pump companies 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 November 6, 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 Nov 6, 2026 How this list was built
78Companies
482Contacts tracked
188Verified emails
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The 25 largest open loop heat pump companies based in the United Kingdom

Ranked by team size
Top 25 of 78 company matches for open loop heat pump companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchLondon, United KingdomHQ recorded Nov 6, 202651-20069 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
2Exact matchKirdford, United KingdomHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Nicholls Boreholes & Ground Source is an established, industry leading, family-run, specialist drilling company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchManchester, United KingdomHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Homely’s smart heat pump controller makes heat pumps easier to fit, manage, and support.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPerth, United KingdomHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchFalkirk, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Having previously worked for a large national mechanical electrical contractor in the renewable energy department, we saw a gap in the renewable energy market for quality ground…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMarket Bosworth, United KingdomHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“The team at Genius Energy Lab have been designing Ground Source Heat Pump systems for over 20 years and consider ourselves the best at what we do.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCanterbury, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Solaris Energy was formed in January 2017 with the core of our business being focused solely on the design and installation of ground and air source heat pumps.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Smart, sustainable heating and cooling, powered by the earth.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchDoncaster, United KingdomHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“JKN Renewables are specialists in the installation of low energy heating, cooling and hot water systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchExeter, United KingdomHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Did you know over 80% of the energy consumed within a building is to provide heating and hot water?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBromley, United KingdomHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Air To Heat Ltd | Specialist Air Source Heat Pump Installers | London & South East At Air To Heat, we don’t just install air source heat pumps, we solve the hardest heating…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLingfield, United KingdomHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Dore Woodman are an MCS Accredited supplier and installer of renewable heating solutions and cover Kent, Surrey, Sussex and South London.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchTilford, United KingdomHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Adlår Castra is a UK-based manufacturer and installer of high-efficiency air source heat pumps, delivering fully funded, low-carbon heating solutions with industry-leading speed…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGateshead, United KingdomHQ recorded Nov 6, 202611-506 contacts →

Exact match

“EcoFuture is made up of a team of industry experts with over a combined 30 years of experience in the business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBordon, United KingdomHQ recorded Nov 6, 202611-506 contacts →

Exact match

“At Onsen Energy, we provide homeowners, developers, sports clubs, schools and the wider energy market with ground source heating systems and drilling services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchHalifax, United KingdomHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Instacom work with some of the UK’s leading commercial & industrial GSHP / ASHP heat pump installers, developers, BMS providers & utility companies helping to deliver projects…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchFolkestone, United KingdomHQ recorded Nov 6, 20261-106 contacts →

Exact match

“AAC Group Ltd is a specialist provider in ASHP (Air Source Heat Pumps) and HVAC (Heating, Ventilation, and Air Conditioning) solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Pure Thermal is a specialist provider of High Temperature Heat Pumps, Dual Output Chiller Hot Water Generators, Natural Refrigerant Chillers and Thermal Battery Systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHitchin, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“ICG Heat Pumps was set up as a subsidiary of the Intelligent Comfort Group (est.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLeicestershire, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Aquifer Energy is a specialist consultant offering a full range of services for Open & Closed loop Ground Source Heating Projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchPeterborough, United KingdomHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Orangehouse Renewables is an accredited and award winning renewable energy company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLeicester, United KingdomHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Heat Centre are a one-stop shop heat pump supplier.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHarrogate, United KingdomHQ recorded Nov 6, 202611-503 contacts →

Exact match

“AirSourced is a trusted partner for property developers, housing providers and homeowners seeking expert renewable heating solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWest Midlands, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Are you ready to embrace a greener future while enjoying significant cost savings?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchPulborough, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Snugg provide both ground and air source heat pump systems for home owners and heating engineers throughout the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 78 open loop heat pump companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 188 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Open loop heat pump companies based in the United Kingdom at a glance

As of Nov 6, 2026
39.0%Verified-email coverage
6.2Average contacts per company
1-10Median size (employees)
7.7%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
43
11-50
28
51-200
3
201-500
2
501-1,000
1

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 78 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 “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. 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 188 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.

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 based in the United Kingdom?

RevenueBase identified 78 company matches for open loop heat pump companies associated with the United Kingdom 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?

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

Which city has the most open loop heat pump companies?

London leads with 6 company records, followed by Aj (1) and Ammanford (1).

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 188 professional contacts with verified work emails tracked across these 78 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.

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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.