Company lists · Data refreshed September 2026
Top 25 Water heater replacement companies based in the United Kingdom
RevenueBase identified 401 water heater replacement companies headquartered in the United Kingdom as of September 2026 and tracks 1,100 professional contacts across them, including 188 with verified work emails. London is the largest hub.
This list covers water heater replacement 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 22, 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 water heater replacement companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 41 contacts → | ||||
Partial evidence “Plumbing & Gas Solutions Ltd are a Constructionline and CHAS accredited Commercial Plumbing & Heating contractor based in Milton Keynes.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 29 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 26 contacts → | ||||
Partial evidence “M&N Heating & Plumbing is an independent company based in Bloxham on the edge of Banbury, serving Oxfordshire, Northamptonshire, Buckinghamshire and Warwickshire.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 26 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 24 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 17 contacts → | ||||
Partial evidence “CleanHeat are a London based Commercial Heating and engineering company working throughout central London and the Home Counties.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 16 contacts → | ||||
Partial evidence “SGS are a heating, plumbing, electrical company specialising in both domestic and commercial applications.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 16 contacts → | ||||
Indirect evidence “Keeping your home or business warm is essential, especially during the winter.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 14 contacts → | ||||
Partial evidence “Heating, Plumbing, Air Conditioning, Electrical & BMS Installation, Servicing and Repair.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 contacts → | ||||
Partial evidence “At Premier Heating Solutions, we provide homeowners across Berkshire, South Oxfordshire, and North Hampshire with reliable, energy-efficient plumbing, heating and electrical…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 10 contacts → | ||||
Strong evidence “We specialise in providing all elements of heating repair and maintenance services to you, including boilers, immersion heaters, radiators and getting other hot water and heating…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 9 contacts → | ||||
Partial evidence “JB Group Ltd is a well-known plumbing and heating business located in Reigate, Surrey.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Partial evidence “Based in Lancashire, HJT Projects provide all forms of large Domestic, Commercial & Industrial Plumbing, Heating & HVAC engineer services throughout the North West.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 6 contacts → | ||||
Partial evidence “We’ve spent decades building a reputation as one of the UK’s leading plumbing, heating and cooling specialists, and it’s all down to the way we work.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 contacts → | ||||
Indirect evidence “We aim to provide a professional, reliable and knowledgeable service from beginning to end.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 contacts → | ||||
Indirect evidence “Established in 1896, Edward Bays Ltd is one of the South West's longest-standing mechanical services contractors.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 6 contacts → | ||||
Partial evidence “AB Plumbing & Heating Ltd is a Family Run Plumbing & Heating Business serving the local area We employ Gas safe registered gas fitters and City & Guilds qualified plumbers, so…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Partial evidence “Flueclean have been providing Commercial and Industrial heating services throughout the North West for over 50 years.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Partial evidence “Premier Heating carry out heating and plumbing in domestic and commercial properties.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Partial evidence “Founded in 1972, Sun Realm Heating Co.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Partial evidence “P C Kelly Plumbing & Heating (Rotherham) Ltd is an established plumbing and heating contractor with nearly 40 years of experience delivering high-quality mechanical installations…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Partial evidence “We are contractors that complete all aspects of commercial gas, plumbing and heating works.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Partial evidence “A Tech Heating Ltd is a commercial heating company based in Glasgow.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 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: water heater replacement 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 water heater replacement companies.
- Partial evidence
- Its own public description names part of water heater replacement companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name water heater replacement 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 401 water heater replacement companies based in the United Kingdom
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Water heater replacement companies based in the United Kingdom at a glance
As of Sep 22, 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 401 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 water heater replacement 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 “water heater replacement 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 water heater replacement 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 water heater replacement 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, 188 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 22, 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.
Water heater replacement companies by metro
- Water heater replacement companies in London31
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 water heater replacement 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 water heater replacement companies are there based in the United Kingdom?
RevenueBase identified 401 water heater replacement 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?
Plumbing & GAS Solutions LTD, headquartered in Milton Keynes, tops this list with the largest team on record.
Which city has the most water heater replacement companies?
London leads with 31 headquartered companies, followed by Manchester (6) and Norwich (6).
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 188 verified decision-maker contacts tracked across these 401 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 22, 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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