Company lists · Data refreshed September 2026

Top 25 Process heating equipment manufacturers based in the United Kingdom

Name: Process 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 17, 2026 204 companies tracked

RevenueBase identified 204 process heating equipment manufacturers headquartered in the United Kingdom as of September 2026 and tracks 3,352 professional contacts across them, including 1,272 with verified work emails. London is the largest hub.

This list covers process 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 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

204Companies

3,352Contacts tracked

1,272Verified emails

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The 25 largest process heating equipment manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 204 process heating equipment manufacturers 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 process 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	Darchem Engineering	Indirect evidence	Stillington, United KingdomHQ checked Sep 17, 2026	501-1,000	317 contacts →
	Indirect evidence “Darchem Engineering Limited is a world class Engineering Company providing products and services primarily to meet the needs of its customers for engineered solutions to high…” Source: RevenueBase Database · checked Sep 17, 2026
2	Dimplex UK	Partial evidence	Southampton, United KingdomHQ checked Sep 17, 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 17, 2026
3	Exheat	Strong evidence	Watton, United KingdomHQ checked Sep 17, 2026	51-200	142 contacts →
	Strong evidence “At EXHEAT, we design and manufacture electric process heaters and control solutions.” Source: RevenueBase Database · checked Sep 17, 2026
4	Unitbirwelco	Partial evidence	Elba Crescent, United KingdomHQ checked Sep 17, 2026	201-500	117 contacts →
	Partial evidence “As a leading expert in thermal equipment, UnitBirwelco is dedicated to delivering excellence in design, project management, manufacturing, fabrication, construction, and…” Source: RevenueBase Database · checked Sep 17, 2026
5	Spooner Industries LTD	Strong evidence	Ilkley, United KingdomHQ checked Sep 17, 2026	51-200	101 contacts →
	Strong evidence “Spooner Industries Limited manufacture industrial process equipment such as industrial ovens, air flotation and dryers, coolers, provers and air pollution abatement equipment for…” Source: RevenueBase Database · checked Sep 17, 2026
6	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
7	Wozair Limited	Strong evidence	Gillingham, United KingdomHQ checked Sep 17, 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 17, 2026
8	Ormandy Rycroft Engineering	Indirect evidence	Bradford, United KingdomHQ checked Sep 17, 2026	51-200	65 contacts →
	Indirect 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
9	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
10	Dunphy Combustion Limited	Strong evidence	Rochdale, United KingdomHQ checked Sep 17, 2026	51-200	53 contacts →
	Strong evidence “Dunphy Combustion Ltd design, manufacture, install and maintain a range of combustion equipment, digital control solutions and turnkey prefabricated, packaged boiler houses.” Source: RevenueBase Database · checked Sep 17, 2026
11	Hamworthy Heating LTD	Strong evidence	Hull, United KingdomHQ checked Sep 17, 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 17, 2026
12	Lochinvar, UK	Partial evidence	Banbury, United KingdomHQ checked Sep 17, 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 17, 2026
13	Warmflow Engineering Co. Limited	Indirect evidence	Lisburn, United KingdomHQ checked Sep 17, 2026	51-200	38 contacts →
	Indirect evidence “Warmflow specialise in design, manufacturing, fabrication, sub assembly and kitting solutions.” Source: RevenueBase Database · checked Sep 17, 2026
14	Fulton Boiler Works GB Limited	Partial evidence	Bristol, United KingdomHQ checked Sep 17, 2026	51-200	38 contacts →
	Partial evidence “Fulton Ltd specialises in the design and manufacture of steam, hot water, thermal fluid boilers, packaged plant rooms and skid-mounted systems for industrial, commercial and…” Source: RevenueBase Database · checked Sep 17, 2026
15	Consarc Engineering LTD	Strong evidence	Holytown, United KingdomHQ checked Sep 17, 2026	51-200	37 contacts →
	Strong evidence “CONSARC Engineering Ltd are world leaders in the design, manufacture, installation and commissioning of vacuum and controlled atmosphere furnace equipment.” Source: RevenueBase Database · checked Sep 17, 2026
16	Babcock Wanson UK LTD	Indirect evidence	Borehamwood, United KingdomHQ checked Sep 17, 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 17, 2026
17	Backer Heatrod LTD	Strong evidence	Bolton, United KingdomHQ checked Sep 17, 2026	11-50	36 contacts →
	Strong evidence “Backer Heatrod manufacture both domestic and industrial electric heating products and solutions.” Source: RevenueBase Database · checked Sep 17, 2026
18	Poole Process Equipment LTD	Strong evidence	Poole, United KingdomHQ checked Sep 17, 2026	11-50	34 contacts →
	Strong evidence “Poole Process Equipment Ltd are leaders in the design, manufacture & repair of air cooled & tubular heat exchangers and of pressure vessels.” Source: RevenueBase Database · checked Sep 17, 2026
19	Thermco Systems Limited	Indirect evidence	Washington, United KingdomHQ checked Sep 17, 2026	51-200	31 contacts →
	Indirect evidence “Headquartered in Washington, West Sussex, United Kingdom Thermco Systems a Division of Tetreon Technologies, is the world’s most trusted brand name in horizontal diffusion…” Source: RevenueBase Database · checked Sep 17, 2026
20	Atag Heating Technology UK Limited	Indirect evidence	Dunfermline, United KingdomHQ checked Sep 17, 2026	51-200	31 contacts →
	Indirect evidence “BUILT TO LAST ATAG truly is a unique company.” Source: RevenueBase Database · checked Sep 17, 2026
21	GRE Ltd. Thermal Engineering And Cryogenics	Indirect evidence	Willand, United KingdomHQ checked Sep 17, 2026	11-50	31 contacts →
	Indirect evidence “GRE is a privately owned business based in the UK.” Source: RevenueBase Database · checked Sep 17, 2026
22	Holroyd Components LTD	Partial evidence	Saffron Walden, United KingdomHQ checked Sep 17, 2026	51-200	27 contacts →
	Partial evidence “Holroyd are market leaders in specialist bespoke heating products, using the latest heating technology and solutions to solve complex industry challenges.” Source: RevenueBase Database · checked Sep 17, 2026
23	Turnbull & Scott Engineers LTD	Indirect evidence	Hawick, United KingdomHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “Turnbull & Scott are mechanical and electrical engineers specialising in the generation, transfer and recovery of heat.” Source: RevenueBase Database · checked Sep 17, 2026
24	Airflow Products LTD	Indirect evidence	Sheffield, United KingdomHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “The Airflow Group provide a range of products and services in Industrial Ovens, Spray Booths, Product Finishing and Controlled Environments for Industrial applications.” Source: RevenueBase Database · checked Sep 17, 2026
25	Elnur UK	Partial evidence	Leigh, United KingdomHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “ELNUR was founded in 1973 and since then, we have established ourselves as one of the leading UK providers of the most efficient heating system in the world: electric heating.” 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: process 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 process heating equipment manufacturers.
Partial evidence: Its own public description names part of process 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 process 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 204 process heating equipment manufacturers based in the United Kingdom

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Process heating equipment manufacturers based in the United Kingdom at a glance

As of Sep 17, 2026

37.9%Verified-email coverage

16.4Average contacts per company

11-50Median size (employees)

3.9%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 204 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 process 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 “process 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 process 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 process 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, 1,272 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.

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

RevenueBase identified 204 process 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?

Darchem Engineering, headquartered in Stockton-On-Tees, tops this list with the largest team on record.

Which city has the most process heating equipment manufacturers?

London leads with 8 headquartered companies, followed by Sheffield (8) and Stoke-On-Trent (4).

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 1,272 verified decision-maker contacts tracked across these 204 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.