Company lists · Data refreshed September 2026

Top 25 Custom air handling unit manufacturers based in the United Kingdom

Name: Custom air handling unit 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 30, 2026 618 companies tracked

RevenueBase identified 618 custom air handling unit manufacturers headquartered in the United Kingdom as of September 2026 and tracks 10,515 professional contacts across them, including 4,007 with verified work emails. London is the largest hub.

This list covers custom air handling unit 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 30, 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 30, 2026 86% judged on-target in blind review

618Companies

10,515Contacts tracked

4,007Verified emails

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The 25 largest custom air handling unit manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 618 custom air handling unit manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to custom air handling unit 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	Howden, A Chart Industries Company	Strong evidence	Renfrew, United KingdomHQ checked Sep 30, 2026	5,001-10,000	3,287 contacts →
	Strong evidence “Howden, A Chart Industries Company is a leading global provider of mission critical air and gas handling products.” Source: RevenueBase Database · checked Sep 30, 2026
2	Colt International	Indirect evidence	Petersfield, United KingdomHQ checked Sep 30, 2026	1,001-5,000	505 contacts →
	Indirect evidence “Since 1931 we have been harnessing the natural elements to provide healthy, comfortable and safe working and living conditions in buildings.” Source: RevenueBase Database · checked Sep 30, 2026
3	Space Engineering Services LTD	Partial evidence	Bristol, United KingdomHQ checked Sep 30, 2026	201-500	312 contacts →
	Partial evidence “Space Engineering Services is the UK’s leading provider of refrigeration, heating, ventilation and air conditioning services.” Source: RevenueBase Database · checked Sep 30, 2026
4	Star Refrigeration	Indirect evidence	Glasgow, United KingdomHQ checked Sep 30, 2026	201-500	298 contacts →
	Indirect evidence “Star Refrigeration is a globally diversified cooling, heating, freezing, mechanical and electrical group of companies.” Source: RevenueBase Database · checked Sep 30, 2026
5	Nuaire	Partial evidence	Caerphilly, United KingdomHQ checked Sep 30, 2026	501-1,000	241 contacts →
	Partial evidence “We are a market-leading business, renowned for radically improving the quality of people’s lives by delivering clean air everywhere.” Source: RevenueBase Database · checked Sep 30, 2026
6	Envirovent	Partial evidence	Harrogate, United KingdomHQ checked Sep 30, 2026	201-500	200 contacts →
	Partial evidence “envirovent is the leading manufacturer and supplier of ventilation systems.” Source: RevenueBase Database · checked Sep 30, 2026
7	VES	Indirect evidence	Eastleigh, United KingdomHQ checked Sep 30, 2026	201-500	167 contacts →
	Indirect evidence “For over 55 years, VES has been at the heart of British manufacturing, delivering intelligent ventilation solutions that keep buildings running efficiently.” Source: RevenueBase Database · checked Sep 30, 2026
8	Swegon Uk&i	Indirect evidence	Ashby-de-la-zouch, United KingdomHQ checked Sep 30, 2026	501-1,000	156 contacts →
	Indirect evidence “Swegon is a market leading supplier of energy efficient indoor climate, cooling and life safety systems.” Source: RevenueBase Database · checked Sep 30, 2026
9	Vent-Axia	Indirect evidence	Crawley, United KingdomHQ checked Sep 30, 2026	201-500	153 contacts →
	Indirect evidence “Established in 1936 when Joe Akester invented the world’s first electrically-operated window fan, Vent-Axia has been setting the standard for ventilation for over 85 years.” Source: RevenueBase Database · checked Sep 30, 2026
10	AAF AIR Filters	Strong evidence	Cramlington, United KingdomHQ checked Sep 30, 2026	51-200	127 contacts →
	Strong evidence “AAF International, the world’s largest manufacturer of air filtration solutions, operates production, warehousing and distribution facilities in 22 countries across four…” Source: RevenueBase Database · checked Sep 30, 2026
11	ELTA	Indirect evidence	Fareham, United KingdomHQ checked Sep 30, 2026	51-200	124 contacts →
	Indirect evidence “For over 50 years, Elta has been a leader in fan design and engineering, offering a diverse range of products for various applications.” Source: RevenueBase Database · checked Sep 30, 2026
12	Trox UK LTD	Strong evidence	Thetford, United KingdomHQ checked Sep 30, 2026	51-200	104 contacts →
	Strong evidence “TROX is a global leader in the development, production and sale of components, units and systems for the ventilation and air conditioning of rooms.” Source: RevenueBase Database · checked Sep 30, 2026
13	Lindab UK	Partial evidence	Northampton, United KingdomHQ checked Sep 30, 2026	1,001-5,000	102 contacts →
	Partial evidence “Lindab develops, manufactures, markets and distributes products and system solutions in sheet metal and steel for simplified construction and improved indoor climate.” Source: RevenueBase Database · checked Sep 30, 2026
14	Daikin Applied UK LTD	Indirect evidence	Cramlington, United KingdomHQ checked Sep 30, 2026	51-200	97 contacts →
	Indirect evidence “Daikin Applied (UK) Ltd (formerly McQuay UK Ltd) is the market leader in energy-efficient end-to-end HVAC solutions, including AHU and chiller products, heat pumps, service and…” Source: RevenueBase Database · checked Sep 30, 2026
15	Zehnder Group UK	Indirect evidence	Camberley, United KingdomHQ checked Sep 30, 2026	201-500	94 contacts →
	Indirect evidence “Zehnder Group is a leading international provider of indoor climate solutions, offering a comprehensive range of products and services for comfortable and healthy living…” Source: RevenueBase Database · checked Sep 30, 2026
16	Mansfield Pollard & CO LTD	Strong evidence	Bradford, United KingdomHQ checked Sep 30, 2026	51-200	90 contacts →
	Strong evidence “Mansfield Pollard designs and manufactures industrial air handling units, advanced data centre cooling systems and customised enclosures for mission critical infrastructure.” Source: RevenueBase Database · checked Sep 30, 2026
17	Wozair Limited	Strong evidence	Gillingham, United KingdomHQ checked Sep 30, 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 30, 2026
18	Gilberts Blackpool LTD	Partial evidence	Blackpool, United KingdomHQ checked Sep 30, 2026	201-500	77 contacts →
	Partial evidence “Established in 1960, Gilberts is the UK’s leading designer and manufacturer of grilles, diffusers, louvres, smoke/fire dampers, and natural ventilation systems for the heating…” Source: RevenueBase Database · checked Sep 30, 2026
19	Airflow Developments LTD	Partial evidence	High Wycombe, United KingdomHQ checked Sep 30, 2026	51-200	74 contacts →
	Partial evidence “In 1955, from one man's expertise in the fields of fan design and air flow measurement, the Airflow Developments group of companies was founded.” Source: RevenueBase Database · checked Sep 30, 2026
20	Powrmatic Limited	Strong evidence	Ilminster, United KingdomHQ checked Sep 30, 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 30, 2026
21	Greenmill AIR Conditioning And Ventilation	Partial evidence	Colchester, United KingdomHQ checked Sep 30, 2026	51-200	65 contacts →
	Partial evidence “Greenmill is one of the UK's leading wholesalers of Air Conditioning and Ventilation Install products.” Source: RevenueBase Database · checked Sep 30, 2026
22	AIR Technology Systems	Partial evidence	Bromsgrove, United KingdomHQ checked Sep 30, 2026	51-200	57 contacts →
	Partial evidence “Air Technology Systems Ltd (ATS) are design and project management specialist contractors focused on providing proprietary and energy saving, Climate Control & Ventilation…” Source: RevenueBase Database · checked Sep 30, 2026
23	Weatherite Group	Strong evidence	West Bromwich, United KingdomHQ checked Sep 30, 2026	51-200	57 contacts →
	Strong evidence “Weatherite Group provides air conditioning and entrance solutions to a range of customers nationally and internationally.” Source: RevenueBase Database · checked Sep 30, 2026
24	Systemair UK	Partial evidence	Birmingham, United KingdomHQ checked Sep 30, 2026	51-200	54 contacts →
	Partial evidence “With our Head Office in Birmingham and a further 13 branches across the UK, we are ideally placed to offer our customers a fast efficient response to any enquiry for Ventilation &…” Source: RevenueBase Database · checked Sep 30, 2026
25	BTU Installation & Maintenance LTD	Indirect evidence	Guildford, United KingdomHQ checked Sep 30, 2026	51-200	53 contacts →
	Indirect evidence “BTU (Installation and Maintenance) Ltd, is a privately owned business based in Guildford, Surrey.” Source: RevenueBase Database · checked Sep 30, 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: custom air handling unit 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 custom air handling unit manufacturers.
Partial evidence: Its own public description names part of custom air handling unit manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom air handling unit 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 618 custom air handling unit manufacturers based in the United Kingdom

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Custom air handling unit manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

38.1%Verified-email coverage

17.0Average contacts per company

11-50Median size (employees)

6.5%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

265

11-50

261

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 618 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 custom air handling unit 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 “custom air handling unit 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 custom air handling unit 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 custom air handling unit 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, 4,007 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 30, 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.

Custom air handling unit manufacturers by metro

Custom air handling unit manufacturers in London40

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 custom air handling unit 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 custom air handling unit manufacturers are there based in the United Kingdom?

RevenueBase identified 618 custom air handling unit 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?

Howden, A Chart Industries Company, headquartered in Renfrew, tops this list with the largest team on record.

Which city has the most custom air handling unit manufacturers?

London leads with 40 headquartered companies, followed by Manchester (15) and Birmingham (13).

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 4,007 verified decision-maker contacts tracked across these 618 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 30, 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.