Company lists · Data refreshed September 2026

Top 25 Hvac control systems integrators based in London, United Kingdom

Name: Hvac control systems integrators based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 85 companies tracked

RevenueBase identified 85 hvac control systems integrators headquartered in London, United Kingdom as of September 2026 and tracks 431 professional contacts across them, including 104 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers hvac control systems integrators headquartered in London, 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 28, 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 28, 2026 86% judged on-target in blind review

85Companies

431Contacts tracked

104Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest hvac control systems integrators based in London, United Kingdom

Ranked by team size

Top 25 of 85 hvac control systems integrators based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hvac control systems integrators: 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	Link Media Systems	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	37 contacts →
	Strong evidence “We are systems integrators.” Source: RevenueBase Database · checked Sep 28, 2026
2	Okto Technologies	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	32 contacts →
	Strong evidence “Master Systems Integrator OKTO Technologies is a leader in the design, development & installation of Smart Building Technology for- SuperPrime Residential - Luxury Hospitality -…” Source: RevenueBase Database · checked Sep 28, 2026
3	ALL BMS Systems LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	27 contacts →
	Partial evidence “All BMS Systems offer a comprehensive service covering consultancy, design, project management, engineering, installation and all essential support services.” Source: RevenueBase Database · checked Sep 28, 2026
4	QQ Solutions LTD	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Strong evidence “QQ design, supply and install of residental and commercial automation technology and energy-efficient control systems.” Source: RevenueBase Database · checked Sep 28, 2026
5	Sensonic Design	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “TECHNOLOGY - DESIGN - SENSONIC Building automation with Cognitive AI In the cutting-edge space Sensonic Design is a High-tech company engaged in the revolutionary integration of…” Source: RevenueBase Database · checked Sep 28, 2026
6	Automatry	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial evidence “Automatry combines building controls engineering with software development for the built environment.” Source: RevenueBase Database · checked Sep 28, 2026
7	Advanced Integration LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Advanced Integration (AI) is a smart home automation and building management systems (BMS) specialist with more than 30 years of experience in the industry.” Source: RevenueBase Database · checked Sep 28, 2026
8	Celsius Solutions LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “Celsius Solutions Ltd delivers projects throughout London, the South East and the UK with our unequalled Design and Build service for the HVAC sector.” Source: RevenueBase Database · checked Sep 28, 2026
9	Thermofrost Cryo LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	9 contacts →
	Indirect evidence “Thermofrost Cryo Ltd is one of the UK’s longest-established independent distributors and wholesalers of refrigeration and air conditioning equipment, components and accessories.” Source: RevenueBase Database · checked Sep 28, 2026
10	IBOS	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “IBOS optimises building systems, transforming them into intelligent, highly efficient operations.” Source: RevenueBase Database · checked Sep 28, 2026
11	Racsel Building Services LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “With over 50 years’ experience within the industry Racsel Building Services Limited specialize in Design, Installation, Maintenance and Servicing of heating, ventilation, cooling…” Source: RevenueBase Database · checked Sep 28, 2026
12	Lotus Smart Homes	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “Welcome to Lotus Smart Homes - Where Imagination Meets Innovation!” Source: RevenueBase Database · checked Sep 28, 2026
13	Magpie BMS Services LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Established in 1994.” Source: RevenueBase Database · checked Sep 28, 2026
14	Tenways	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Strong evidence “Tenways Engineering provides Installation and control solutions for HVAC.” Source: RevenueBase Database · checked Sep 28, 2026
15	Hoveair Maintenance Services Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “Hoveair are specialists in all disciplines of the Air Conditioning, Heating and Ventilation and Industry, giving comprehensive Design, Management, Installation, Commissioning and…” Source: RevenueBase Database · checked Sep 28, 2026
16	Eureka International Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	3 contacts →
	Partial evidence “We are Eureka International, and we are here to disrupt the HVAC Industry.” Source: RevenueBase Database · checked Sep 28, 2026
17	Loxone Flagship Partner Automate	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “We deliver projects that provide full building control, whether you are looking for a next level smart home which is properly centrally managed, a hotel which needs the wow factor…” Source: RevenueBase Database · checked Sep 28, 2026
18	Escher Building Integration Technology Limited	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	3 contacts →
	Strong evidence “ESCHER BUILDING INTEGRATION TECHNOLOGY LIMITED BMS HVAC Controls / Energy Management Specialists” Source: RevenueBase Database · checked Sep 28, 2026
19	RJC Controls LTD	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	3 contacts →
	Strong evidence “RJC Controls Ltd specialises in providing advanced technology solutions for the efficient and effective management of various building systems within commercial, residential, and…” Source: RevenueBase Database · checked Sep 28, 2026
20	Echo Integration	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Since the founding of Echo Integration, we have quickly rose to industry innovator and leader status – being at the forefront of systems design, integration and automation for a…” Source: RevenueBase Database · checked Sep 28, 2026
21	Kenmar Cooling Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “KENMAR COOLING LIMITED is a construction company based out of 171-173 GRAY'S INN ROAD, LONDON, United Kingdom.” Source: RevenueBase Database · checked Sep 28, 2026
22	Voytech Systems	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Strong evidence “Voytech Systems specialises in the development of control and monitoring solutions in the Building Automation sector.” Source: RevenueBase Database · checked Sep 28, 2026
23	Digital AV LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Digital AV was founded on the joint principles of client satisfaction and a passion for simple, elegant solutions to complex challenges.” Source: RevenueBase Database · checked Sep 28, 2026
24	Epic Integration LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “At Epic we understand that our client’s requirements are diverse and, as experienced partners, we provide a one‐stop package.” Source: RevenueBase Database · checked Sep 28, 2026
25	RH MEP LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	1 contacts →
	Indirect evidence “RH MEP is a leading commercial mechanical, electrical, and plumbing service provider.” Source: RevenueBase Database · checked Sep 28, 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: hvac control systems integrators. 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 hvac control systems integrators.
Partial evidence: Its own public description names part of hvac control systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac control systems integrators. 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 85 hvac control systems integrators based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 104 reachable decision-makers.

Free signup · no credit card

View the full list →

Hvac control systems integrators based in London, United Kingdom at a glance

As of Sep 28, 2026

24.1%Verified-email coverage

5.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 85 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 hvac control systems integrators, 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 London, United Kingdom whose own description of what they do matches “hvac control systems integrators”. 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 hvac control systems integrators), 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 hvac control systems integrators, and records with no verified work email. Companies headquartered outside London 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, 104 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 28, 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 hvac control systems integrators, 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 hvac control systems integrators are there based in London, United Kingdom?

RevenueBase identified 85 hvac control systems integrators headquartered in London, 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?

Link Media Systems, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most hvac control systems integrators?

London leads the United Kingdom with 85 headquartered companies, followed by Glasgow (14) and Bristol (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 104 verified decision-maker contacts tracked across these 85 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 85 hvac control systems integrators based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Hvac control systems integrators by geography

Browse the directory

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.