Company lists · Data refreshed September 2026

Top 25 Commercial water heater installation companies based in the United Kingdom

Name: Commercial water heater installation companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 729 companies tracked

RevenueBase identified 729 company matches for commercial water heater installation companies associated with the United Kingdom as of September 2026 and tracks 3,473 professional contacts across them, including 898 with verified work emails. London is the largest hub.

This list covers company matches for commercial water heater installation companies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built

729Companies

3,473Contacts tracked

898Verified emails

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

The 25 largest commercial water heater installation companies based in the United Kingdom

Ranked by team size

Top 25 of 729 company matches for commercial water heater installation companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	BAXI	Exact match	Warwick, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	850 contacts →
	Exact match “We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Swale Heating Part Of Sureserve	Exact match	Sittingbourne, United KingdomHQ recorded Sep 19, 2026	201-500	136 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Byworth Boilers Limited	Exact match	Keighley, United KingdomHQ recorded Sep 19, 2026	51-200	96 contacts →
	Exact match “Your industrial boiler is at the heart of your operations.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	James Ramsay	Exact match	Glasgow, United KingdomHQ recorded Sep 19, 2026	51-200	54 contacts →
	Exact match “Heating - Pipework - Process - Maintenance.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Sentinel Performance Solutions LTD	Exact match	Warrington, United KingdomHQ recorded Sep 19, 2026	51-200	51 contacts →
	Exact match “We clean, protect and maintain domestic and commercial heating and hot water systems by providing best practice solutions and products internationally.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Hamworthy Heating LTD	Exact match	Hull, United KingdomHQ recorded Sep 19, 2026	51-200	45 contacts →
	Exact match “Hamworthy Heating is a British manufacturer and supplier of commercial heating and hot water products.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Plumbing & GAS Solutions LTD	Exact match	Milton Keynes, United KingdomHQ recorded Sep 19, 2026	11-50	41 contacts →
	Exact match “Plumbing & Gas Solutions Ltd are a Constructionline and CHAS accredited Commercial Plumbing & Heating contractor based in Milton Keynes.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Lochinvar, UK	Exact match	Banbury, United KingdomHQ recorded Sep 19, 2026	11-50	40 contacts →
	Exact match “Lochinvar designs, manufactures and distributes a comprehensive range of high efficiency gas fired water heaters and boilers for commercial and industrial applications.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Principal Hvac	Exact match	Belfast, United KingdomHQ recorded Sep 19, 2026	51-200	34 contacts →
	Exact match “Principal HVAC are at the leading edge of Heating, Ventilation & Air conditioning systems for commercial and residential property.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	VHL Mechanical	Exact match	London, United KingdomHQ recorded Sep 19, 2026	51-200	29 contacts →
	Exact match “We are one of the leading plumbing, heating and electrical companies nationally, serving residential and commercial clients throughout South East England With almost three decades…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	JSA Service	Exact match	Sunbury, United KingdomHQ recorded Sep 19, 2026	11-50	26 contacts →
	Exact match “JSA Service specialise in providing first class commercial Heating, Ventilation, Air Conditioning and Refrigeration services for nearly 50 years.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Bonus Eventus Maintenance LTD	Exact match	Camberley, United KingdomHQ recorded Sep 19, 2026	11-50	26 contacts →
	Exact match “Trusted provider of cost-saving maintenance and repair of commercial heating, ventilation & air conditioning (HVAC) systems in London, Surrey, Hampshire, Hertfordshire, Berkshire…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	M&n Heating & Plumbing	Exact match	Banbury, United KingdomHQ recorded Sep 19, 2026	51-200	26 contacts →
	Exact match “M&N Heating & Plumbing is an independent company based in Bloxham on the edge of Banbury, serving Oxfordshire, Northamptonshire, Buckinghamshire and Warwickshire.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	HCS Mechanical Services	Exact match	Skipton, United KingdomHQ recorded Sep 19, 2026	51-200	26 contacts →
	Exact match “H Clarke & Sons Ltd was first established in 1920 and has grown to become one of the most renowned independent heating and plumbing companies in the region.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Adveco LTD	Exact match	Farnborough, United KingdomHQ recorded Sep 19, 2026	11-50	24 contacts →
	Exact match “With more than 50 years of industry experience, Adveco Ltd.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Huttie Building Services	Exact match	Cambridge, United KingdomHQ recorded Sep 19, 2026	11-50	24 contacts →
	Exact match “Huttie group was founded in 2007 and provides full commercial and residential plumbing, heating and electrical services - Commercial: For every business and building type, you…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Mcquillan Boiler Services LTD	Exact match	Rochdale, United KingdomHQ recorded Sep 19, 2026	51-200	18 contacts →
	Exact match “McQuillan Boiler Services was established in 1989 with the intention of offering our loyal customers reliable support and servicing with both their industrial and commercial steam…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Cleanheat	Exact match	London, United KingdomHQ recorded Sep 19, 2026	11-50	17 contacts →
	Exact match “CleanHeat are a London based Commercial Heating and engineering company working throughout central London and the Home Counties.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	K&m Technical Services	Exact match	Belfast, United KingdomHQ recorded Sep 19, 2026	51-200	16 contacts →
	Exact match “KM Technical is one of UK’s leading provider of installation and service solutions in the areas of electrical installation, heating & plumbing and heating ventilation and air…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	SGS Heating & Electrical LTD	Exact match	Salisbury, United KingdomHQ recorded Sep 19, 2026	11-50	16 contacts →
	Exact match “SGS are a heating, plumbing, electrical company specialising in both domestic and commercial applications.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Climatix Group	Exact match	Church Fenton, United KingdomHQ recorded Sep 19, 2026	11-50	16 contacts →
	Exact match “Born in Yorkshire.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Simple Heating Services LTD	Exact match	Liverpool, United KingdomHQ recorded Sep 19, 2026	51-200	16 contacts →
	Exact match “Keeping your home or business warm is essential, especially during the winter.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Tencer LTD	Exact match	High Wycombe, United KingdomHQ recorded Sep 19, 2026	51-200	14 contacts →
	Exact match “Heating, Plumbing, Air Conditioning, Electrical & BMS Installation, Servicing and Repair.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Pearce Elite Plumbing & Heating Limited	Exact match	Port Talbot, United KingdomHQ recorded Sep 19, 2026	11-50	14 contacts →
	Exact match “We do it all.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Clever Energy Boilers	Exact match	Keighley, United KingdomHQ recorded Sep 19, 2026	11-50	13 contacts →
	Exact match “CLEVER ENERGY BOILERS is part of the Green Deal Factory.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “commercial water heater installation companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 729 commercial water heater installation companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 898 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Commercial water heater installation companies based in the United Kingdom at a glance

As of Sep 19, 2026

25.9%Verified-email coverage

4.8Average contacts per company

1-10Median size (employees)

8.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

481

11-50

187

51-200

201-500

501-1,000

1,001-5,000

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

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “commercial water heater installation companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 898 professional contacts with verified work emails across the full matched dataset. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “commercial water heater installation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many commercial water heater installation companies are there based in the United Kingdom?

RevenueBase identified 729 company matches for commercial water heater installation companies associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

BAXI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most commercial water heater installation companies?

London leads with 58 company records, followed by Manchester (9) and Norwich (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 898 professional contacts with verified work emails tracked across these 729 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 729 commercial water heater installation companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Commercial water heater installation companies 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 SmartSearch, 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.