Company lists · Data refreshed October 2026

Top 25 Hydronic heating system manufacturers based in the United Kingdom

RevenueBase identified 202 company matches for hydronic heating system manufacturers associated with the United Kingdom as of October 2026 and tracks 4,167 professional contacts across them, including 1,016 with verified work emails. London is the largest hub.

This list covers company matches for hydronic heating system 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 14, 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 14, 2026 How this list was built
202Companies
4,167Contacts tracked
1,016Verified emails
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The 25 largest hydronic heating system manufacturers based in the United Kingdom

Ranked by team size
Top 25 of 202 company matches for hydronic heating system manufacturers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 14, 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 14, 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 14, 2026 · View company records in RevenueBase
2Exact matchHull, United KingdomHQ recorded Oct 14, 2026501-1,000302 contacts →

Exact match

“The UK’s leading heating manufacturer, providing reliable, sustainable warmth through boilers, heat pumps and controls Rated Excellent on Trustpilot Award-winning Keeping Homes…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
3Exact matchSouthampton, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
4Exact matchBelper, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
5Exact matchSwindon, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
6Exact matchPeterborough, United KingdomHQ recorded Oct 14, 202651-20079 contacts →

Exact match

“With over 35 years of experience, and as Europe's leading manufacturer of electric heating, Rointe is ideally placed to help our customers choose the right heating system, at the…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
7Exact matchHoniton, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
8Exact matchIlminster, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
9Exact matchHull, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
10Exact matchStevenage, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
11Exact matchHertfordshire, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
12Exact matchSouthampton, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
13Exact matchLeicester, United KingdomHQ recorded Oct 14, 202651-20039 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
14Exact matchBanbury, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
15Exact matchStockport, United KingdomHQ recorded Oct 14, 202651-20035 contacts →

Exact match

“Castrads, established in England in 2006, manufactures custom-built, custom-finished radiators as well as controls and fittings that are suitable for both steam and hydronic…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
16Exact matchChelmsford, United KingdomHQ recorded Oct 14, 202651-20035 contacts →

Exact match

“Founded in 1991, Smith’s EP UK has grown organically to become the UK’s leading supplier of hydronic fan convector products, providing versatile, energy efficient heating…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
17Exact matchLisburn, United KingdomHQ recorded Oct 14, 202651-20033 contacts →

Exact match

“Warmflow specialise in design, manufacturing, fabrication, sub assembly and kitting solutions.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
18Exact matchHatfield, United KingdomHQ recorded Oct 14, 202611-5032 contacts →

Exact match

“Ambiente Systems Ltd has been trading since 2006 and specialises in the design, manufacture and supply of hydronic underfloor heating systems to the trade.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
19Exact matchDunfermline, United KingdomHQ recorded Oct 14, 202651-20032 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
20Exact matchNorthampton, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
21Exact matchCaldicot, United KingdomHQ recorded Oct 14, 202651-20029 contacts →

Exact match

“Wunda Group plc was established in 2006 as a leader in underfloor heating solutions specialising in providing energy efficient solutions with environmental ethics at their core…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
22Exact matchFarnborough, United KingdomHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
23Exact matchGateshead, United KingdomHQ recorded Oct 14, 2026201-50025 contacts →

Exact match

“Merriott is the better choice for bespoke heating solutions for commercial applications across the UK and Ireland.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
24Exact matchFarnborough, United KingdomHQ recorded Oct 14, 202611-5024 contacts →

Exact match

“With more than 50 years of industry experience, Adveco Ltd.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
25Exact matchSouthampton, United KingdomHQ recorded Oct 14, 202611-5023 contacts →

Exact match

“Essco design and supply energy efficient products and systems to the heating, ventilating, air conditioning and process industries.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase

Showing 25 of 202 hydronic heating system manufacturers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,016 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydronic heating system manufacturers based in the United Kingdom at a glance

As of Oct 14, 2026
24.4%Verified-email coverage
20.6Average contacts per company
11-50Median size (employees)
5.4%Largest-city concentration · London
Oct 14, 2026Page data refreshed

Companies by employee count

1-10
81
11-50
63
51-200
32
201-500
10
501-1,000
5
1,001-5,000
6
5,001-10,000
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 202 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 “hydronic heating system 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 1,016 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 14, 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 “hydronic heating system manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydronic heating system manufacturers are there based in the United Kingdom?

RevenueBase identified 202 company matches for hydronic heating system 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 hydronic heating system manufacturers?

London leads with 11 company records, followed by Hull (5) and Sheffield (4).

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 1,016 professional contacts with verified work emails tracked across these 202 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 14, 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.