Company lists · Data refreshed September 2026
Top 25 Ac companies based in the United Kingdom
RevenueBase identified 1,652 ac companies headquartered in the United Kingdom as of September 2026 and tracks 13,406 professional contacts across them, including 4,756 with verified work emails. London is the largest hub.
This list covers ac companies 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 21, 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.
The 25 largest ac companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 398 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 312 contacts → | ||||
Indirect evidence “Space Engineering Services is the UK’s leading provider of refrigeration, heating, ventilation and air conditioning services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 298 contacts → | ||||
Indirect evidence “Star Refrigeration is a globally diversified cooling, heating, freezing, mechanical and electrical group of companies.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 179 contacts → | ||||
Indirect evidence “What does it take to deliver confidence at every stage of the heating journey?” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 153 contacts → | ||||
Indirect evidence “Imagine what’s possible… That’s the question that drives us to push the boundaries of thermal management – delivering the highest levels of performance, efficiency, and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 132 contacts → | ||||
Indirect evidence “Adcock Refrigeration and Air Conditioning design, install, service and care for systems in commercial, industrial and individual residential premises right across the UK.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 114 contacts → | ||||
Indirect evidence “Neil Fisher started Airco in 1991.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 108 contacts → | ||||
Indirect evidence “TF Solutions first opened its doors in 2001 with a passion and ambition to do the right thing, the right way.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 107 contacts → | ||||
Indirect evidence “Hotchkiss is the UK's leading air conditioning and ventilation contractor.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 104 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 100 contacts → | ||||
Indirect evidence “Kooltech Ltd est 1979.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 92 contacts → | ||||
Indirect evidence “Nationwide Air Conditioning Limited is a carbon-neutral business that has been exceeding customer expectations since 2001.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 90 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 83 contacts → | ||||
Indirect evidence “We offer a full portfolio of refrigeration & air-conditioning equipment and service to the world’s best and most demanding retail market – the UK.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 80 contacts → | ||||
Indirect evidence “At Aqua we consult, design, install and service a wide range of innovative temperature control solutions for purchase or hire across the UK and further afield.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 77 contacts → | ||||
Indirect evidence “At Aircon Group, we’re dedicated to providing exceptional levels of customer service in Air Conditioning, Refrigeration, and Air-Source Heating Services, which we have done for…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 75 contacts → | ||||
Indirect evidence “Accent Services has served the air conditioning industry since 1978, growing in experience to become one of the industry’s leading specialist organisations by providing a full…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 64 contacts → | ||||
Indirect evidence “Acme are specialists in commercial kitchens, catering equipment, refrigeration and air conditioning, trusted for 60 years.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 59 contacts → | ||||
Indirect evidence “PREAH Building Services: Redefining Excellence in Mechanical & Electrical Engineering Founded in 2014, PREAH Building Services stands at the forefront of the M&E sector across…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: ac companies. 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 ac companies.
- Partial evidence
- Its own public description names part of ac companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name ac companies. 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 1,652 ac companies based in the United Kingdom
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Ac companies based in the United Kingdom at a glance
As of Sep 21, 2026Companies by employee count
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 1,652 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 ac companies, 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 “ac companies”. 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 ac companies), 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 ac companies, 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, 4,756 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 21, 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.
Ac companies by metro
- Ac companies in London122
- Ac companies in Birmingham29
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 ac companies, 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 ac companies are there based in the United Kingdom?
RevenueBase identified 1,652 ac companies 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 ac companies?
London leads with 122 headquartered companies, followed by Birmingham (29) and Glasgow (20).
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 4,756 verified decision-maker contacts tracked across these 1,652 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 21, 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.
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