Company lists · Data refreshed September 2026

Top 25 Industrial heat providers based in the United Kingdom

Name: Industrial heat providers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 729 companies tracked

RevenueBase identified 729 industrial heat providers headquartered in the United Kingdom as of September 2026 and tracks 11,123 professional contacts across them, including 3,265 with verified work emails. London is the largest hub.

This list covers industrial heat providers 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 17, 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 17, 2026 86% judged on-target in blind review

729Companies

11,123Contacts tracked

3,265Verified emails

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The 25 largest industrial heat providers based in the United Kingdom

Ranked by team size

Top 25 of 729 industrial heat providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial heat providers: 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	Spirax Sarco	Indirect evidence	Cheltenham, United KingdomHQ checked Sep 17, 2026	5,001-10,000	1,669 contacts →
	Indirect evidence “Expertise \| Solutions \| Sustainability A FTSE-100 company, Spirax Sarco is the world's leading provider of steam system solutions.” Source: RevenueBase Database · checked Sep 17, 2026
2	BAXI	Indirect evidence	Warwick, United KingdomHQ checked Sep 17, 2026	1,001-5,000	850 contacts →
	Indirect evidence “We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Source: RevenueBase Database · checked Sep 17, 2026
3	Vital Energi Utilities Limited	Indirect evidence	Blackburn, United KingdomHQ checked Sep 17, 2026	501-1,000	709 contacts →
	Indirect evidence “Our 30+ years’ experience have involved us in the creation of major UK district heating networks in areas such as Sheffield, Nottingham and London.” Source: RevenueBase Database · checked Sep 17, 2026
4	Andrews Sykes Group PLC	Indirect evidence	Wolverhampton, United KingdomHQ checked Sep 17, 2026	501-1,000	209 contacts →
	Indirect evidence “As the UK’s largest specialist hire company, we provide the best pumps, heating and cooling equipment for virtually every need, location and application.” Source: RevenueBase Database · checked Sep 17, 2026
5	Dimplex UK	Indirect evidence	Southampton, United KingdomHQ checked Sep 17, 2026	501-1,000	201 contacts →
	Indirect evidence “For over 75 years, Dimplex has been the trusted name for electric heating.” Source: RevenueBase Database · checked Sep 17, 2026
6	Vaillant UK	Indirect evidence	Belper, United KingdomHQ checked Sep 17, 2026	501-1,000	179 contacts →
	Indirect evidence “What does it take to deliver confidence at every stage of the heating journey?” Source: RevenueBase Database · checked Sep 17, 2026
7	Carrier Rental Systems UK And Ireland	Indirect evidence	Bracknell, United KingdomHQ checked Sep 17, 2026	201-500	170 contacts →
	Indirect evidence “Carrier Rental Systems is one of the leading suppliers of temperature control rental equipment in the UK and Ireland.” Source: RevenueBase Database · checked Sep 17, 2026
8	Switch2 Energy Limited	Partial evidence	Shipley, United KingdomHQ checked Sep 17, 2026	201-500	140 contacts →
	Partial evidence “Switch2 is the UK’s most experienced and capable provider of end-to-end solutions for residential heat networks.” Source: RevenueBase Database · checked Sep 17, 2026
9	Swale Heating Part Of Sureserve	Indirect evidence	Sittingbourne, United KingdomHQ checked Sep 17, 2026	201-500	136 contacts →
	Indirect 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 17, 2026
10	Bring Energy	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	125 contacts →
	Indirect evidence “We are Bring Energy.” Source: RevenueBase Database · checked Sep 17, 2026
11	Grant Engineering UK LTD	Partial evidence	Swindon, United KingdomHQ checked Sep 17, 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 17, 2026
12	Cochran	Partial evidence	Annan, United KingdomHQ checked Sep 17, 2026	201-500	110 contacts →
	Partial evidence “Cochran has been embedded within industrial boiler manufacturing since 1878.” Source: RevenueBase Database · checked Sep 17, 2026
13	Byworth Boilers Limited	Partial evidence	Keighley, United KingdomHQ checked Sep 17, 2026	51-200	96 contacts →
	Partial evidence “Your industrial boiler is at the heart of your operations.” Source: RevenueBase Database · checked Sep 17, 2026
14	SAV Systems	Indirect evidence	Woking, United KingdomHQ checked Sep 17, 2026	51-200	92 contacts →
	Indirect evidence “SAV Systems is an established provider of energy-efficient heating and ventilation solutions.” Source: RevenueBase Database · checked Sep 17, 2026
15	JBC	Partial evidence	Normanton, United KingdomHQ checked Sep 17, 2026	51-200	86 contacts →
	Partial evidence “JBC Industrial Services is the leading name in Industrial Boiler and Burner service, maintenance, and repair.” Source: RevenueBase Database · checked Sep 17, 2026
16	Boustead International Heaters	Partial evidence	Burgess Hill, United KingdomHQ checked Sep 17, 2026	51-200	79 contacts →
	Partial evidence “Boustead International Heaters is a leading global specialist in designing, engineering and supplying direct-fired process heater systems, waste heat recovery units and once…” Source: RevenueBase Database · checked Sep 17, 2026
17	Wozair Limited	Indirect evidence	Gillingham, United KingdomHQ checked Sep 17, 2026	51-200	79 contacts →
	Indirect 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 17, 2026
18	Powrmatic Limited	Indirect evidence	Ilminster, United KingdomHQ checked Sep 17, 2026	51-200	73 contacts →
	Indirect 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 17, 2026
19	Green's	Indirect evidence	Wakefield, United KingdomHQ checked Sep 17, 2026	51-200	72 contacts →
	Indirect evidence “Green’s is one of Europe’s largest providers of boiler pressure part equipment.” Source: RevenueBase Database · checked Sep 17, 2026
20	Nu-Heat Underfloor Heating & Renewables	Partial evidence	Honiton, United KingdomHQ checked Sep 17, 2026	51-200	70 contacts →
	Partial 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 17, 2026
21	Sterling Thermal Technology LTD	Partial evidence	Aylesbury, United KingdomHQ checked Sep 17, 2026	51-200	69 contacts →
	Partial evidence “Your trusted heat exchanger manufacturer - From first principles to lasting partnerships Heat exchanger manufacturer since 1904, we design and produce to custom specifications.” Source: RevenueBase Database · checked Sep 17, 2026
22	Ormandy Rycroft Engineering	Partial evidence	Bradford, United KingdomHQ checked Sep 17, 2026	51-200	65 contacts →
	Partial evidence “Ormandy Rycroft Engineering aims to be a market leading provider of world class heat transfer and packaged solutions through our integrated portfolio of products, and our…” Source: RevenueBase Database · checked Sep 17, 2026
23	Saacke Combustion Services LTD	Indirect evidence	Havant, United KingdomHQ checked Sep 17, 2026	51-200	57 contacts →
	Indirect evidence “SAACKE is your qualified partner when it comes to highly efficient, reliable combustion plants with low emissions.” Source: RevenueBase Database · checked Sep 17, 2026
24	James Ramsay	Indirect evidence	Glasgow, United KingdomHQ checked Sep 17, 2026	51-200	54 contacts →
	Indirect evidence “Heating - Pipework - Process - Maintenance.” Source: RevenueBase Database · checked Sep 17, 2026
25	2g Energy LTD	Partial evidence	Runcorn, United KingdomHQ checked Sep 17, 2026	501-1,000	54 contacts →
	Partial evidence “2G Energy Ltd is the UK subsidiary of 2G Energy AG, a globally leading manufacturer of combined heat and power (CHP) plants.” Source: RevenueBase Database · checked Sep 17, 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: industrial heat providers. 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 industrial heat providers.
Partial evidence: Its own public description names part of industrial heat providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial heat providers. 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 729 industrial heat providers based in the United Kingdom

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Industrial heat providers based in the United Kingdom at a glance

As of Sep 17, 2026

29.4%Verified-email coverage

15.3Average contacts per company

1-10Median size (employees)

5.8%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

361

11-50

240

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 729 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 industrial heat providers, 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 “industrial heat providers”. 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 industrial heat providers), 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 industrial heat providers, 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, 3,265 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 17, 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.

Industrial heat providers by metro

Industrial heat providers in London42

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 industrial heat providers, 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 industrial heat providers are there based in the United Kingdom?

RevenueBase identified 729 industrial heat providers 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?

Spirax Sarco, headquartered in Cheltenham, tops this list with the largest team on record.

Which city has the most industrial heat providers?

London leads with 42 headquartered companies, followed by Birmingham (10) and Glasgow (10).

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 3,265 verified decision-maker contacts tracked across these 729 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 17, 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.