Company lists · Data refreshed September 2026

Top 25 Heating equipment manufacturers based in the United Kingdom

Name: Heating equipment manufacturers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 345 companies tracked

RevenueBase identified 345 heating equipment manufacturers headquartered in the United Kingdom as of September 2026 and tracks 4,496 professional contacts across them, including 1,485 with verified work emails. London is the largest hub.

This list covers heating equipment manufacturers 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

345Companies

4,496Contacts tracked

1,485Verified emails

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The 25 largest heating equipment manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 345 heating equipment manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to heating equipment manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Daikin UK	Partial evidence	Weybridge, United KingdomHQ checked Sep 16, 2026	201-500	398 contacts →
	Partial evidence “Experts in our field, Daikin UK is a leading supplier of heating, cooling and refrigeration solutions for commercial, residential and industrial applications.” Source: RevenueBase Database · checked Sep 16, 2026
2	Ideal Heating	Strong evidence	Hull, United KingdomHQ checked Sep 16, 2026	501-1,000	286 contacts →
	Strong evidence “The UK’s leading heating manufacturer, providing reliable, sustainable warmth through boilers, heat pumps and controls Rated Excellent on Trustpilot Award-winning Keeping Homes…” Source: RevenueBase Database · checked Sep 16, 2026
3	Dimplex UK	Partial evidence	Southampton, United KingdomHQ checked Sep 16, 2026	501-1,000	201 contacts →
	Partial evidence “For over 75 years, Dimplex has been the trusted name for electric heating.” Source: RevenueBase Database · checked Sep 16, 2026
4	Exheat	Partial evidence	Watton, United KingdomHQ checked Sep 16, 2026	51-200	142 contacts →
	Partial evidence “At EXHEAT, we design and manufacture electric process heaters and control solutions.” Source: RevenueBase Database · checked Sep 16, 2026
5	Swale Heating Part Of Sureserve	Partial evidence	Sittingbourne, United KingdomHQ checked Sep 16, 2026	201-500	136 contacts →
	Partial evidence “As an established heating company based in Kent, Swale Heating are proud to offer expert guidance in choosing the best heating and boiler systems & products available today.” Source: RevenueBase Database · checked Sep 16, 2026
6	Grant Engineering UK LTD	Partial evidence	Swindon, United KingdomHQ checked Sep 16, 2026	51-200	115 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
7	Rointe Heating	Strong evidence	Peterborough, United KingdomHQ checked Sep 16, 2026	51-200	83 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
8	Wozair Limited	Strong evidence	Gillingham, United KingdomHQ checked Sep 16, 2026	51-200	79 contacts →
	Strong evidence “Wozair specialises in the design and manufacture of high integrity heating, ventilating and air conditioning (HVAC) equipment for offshore oil and gas, nuclear, marine…” Source: RevenueBase Database · checked Sep 16, 2026
9	Powrmatic Limited	Strong evidence	Ilminster, United KingdomHQ checked Sep 16, 2026	51-200	73 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
10	Intergas Heating LTD	Partial evidence	Kidderminster, United KingdomHQ checked Sep 16, 2026	201-500	61 contacts →
	Partial evidence “We’re Dutch, we manufacture ultra-efficient domestic boilers and we want to make the world a better place for all of us.” Source: RevenueBase Database · checked Sep 16, 2026
11	Alpha Heating Innovation	Partial evidence	Wrotham Heath, United KingdomHQ checked Sep 16, 2026	51-200	55 contacts →
	Partial evidence “Established over 50 years, Alpha is recognised today as one of the leaders in the UK’s heating industry.” Source: RevenueBase Database · checked Sep 16, 2026
12	Hamworthy Heating LTD	Strong evidence	Hull, United KingdomHQ checked Sep 16, 2026	51-200	45 contacts →
	Strong evidence “Hamworthy Heating is a British manufacturer and supplier of commercial heating and hot water products.” Source: RevenueBase Database · checked Sep 16, 2026
13	Elecro Engineering LTD	Strong evidence	Stevenage, United KingdomHQ checked Sep 16, 2026	11-50	45 contacts →
	Strong evidence “Elecro Engineering are considered one of the leading international manufacturers and specialists in the field of swimming pool water heating.” Source: RevenueBase Database · checked Sep 16, 2026
14	Vokera By Riello	Partial evidence	Hertfordshire, United KingdomHQ checked Sep 16, 2026	11-50	45 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
15	GDC Group LTD	Partial evidence	Southampton, United KingdomHQ checked Sep 16, 2026	51-200	43 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
16	Lochinvar, UK	Partial evidence	Banbury, United KingdomHQ checked Sep 16, 2026	11-50	40 contacts →
	Partial 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, 2026
17	Smith's EP UK	Partial evidence	Chelmsford, United KingdomHQ checked Sep 16, 2026	51-200	39 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
18	SPC	Strong evidence	Leicester, United KingdomHQ checked Sep 16, 2026	51-200	39 contacts →
	Strong evidence “SPC is a British manufacturer specialising in supplying heating and cooling solutions.” Source: RevenueBase Database · checked Sep 16, 2026
19	Warmflow Engineering Co. Limited	Indirect evidence	Lisburn, United KingdomHQ checked Sep 16, 2026	51-200	38 contacts →
	Indirect evidence “Warmflow specialise in design, manufacturing, fabrication, sub assembly and kitting solutions.” Source: RevenueBase Database · checked Sep 16, 2026
20	Babcock Wanson UK LTD	Indirect evidence	Borehamwood, United KingdomHQ checked Sep 16, 2026	51-200	36 contacts →
	Indirect evidence “Babcock Wanson offers a complete range of products and services for your boiler house.” Source: RevenueBase Database · checked Sep 16, 2026
21	Backer Heatrod LTD	Strong evidence	Bolton, United KingdomHQ checked Sep 16, 2026	11-50	36 contacts →
	Strong evidence “Backer Heatrod manufacture both domestic and industrial electric heating products and solutions.” Source: RevenueBase Database · checked Sep 16, 2026
22	Rapid Energy LTD	Indirect evidence	Sheerness, United KingdomHQ checked Sep 16, 2026	n/a	35 contacts →
	Indirect evidence “Established in February 2020, Rapid Energy is a dynamic business operating in the UK temporary HVAC sector.” Source: RevenueBase Database · checked Sep 16, 2026
23	Castrads	Partial evidence	Stockport, United KingdomHQ checked Sep 16, 2026	51-200	34 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
24	AIR Vent Technology	Partial evidence	Andover, United KingdomHQ checked Sep 16, 2026	11-50	32 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
25	Atag Heating Technology UK Limited	Indirect evidence	Dunfermline, United KingdomHQ checked Sep 16, 2026	51-200	31 contacts →
	Indirect evidence “BUILT TO LAST ATAG truly is a unique company.” Source: RevenueBase Database · checked Sep 16, 2026

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: heating equipment manufacturers. 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 heating equipment manufacturers.
Partial evidence: Its own public description names part of heating equipment manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name heating equipment manufacturers. 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 345 heating equipment manufacturers based in the United Kingdom

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Heating equipment manufacturers based in the United Kingdom at a glance

As of Sep 16, 2026

33.0%Verified-email coverage

13.0Average contacts per company

11-50Median size (employees)

4.9%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

162

11-50

107

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 345 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 heating equipment manufacturers, 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 “heating equipment manufacturers”. 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 heating equipment manufacturers), 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 heating equipment manufacturers, 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, 1,485 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.

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 heating equipment manufacturers, 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 heating equipment manufacturers are there based in the United Kingdom?

RevenueBase identified 345 heating equipment manufacturers 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 UK, headquartered in Weybridge, tops this list with the largest team on record.

Which city has the most heating equipment manufacturers?

London leads with 17 headquartered companies, followed by Birmingham (6) and Leeds (5).

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 1,485 verified decision-maker contacts tracked across these 345 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.