Company lists · Data refreshed September 2026

Top 25 Hydronic heating contractors based in the United Kingdom

Name: Hydronic heating contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 992 companies tracked

RevenueBase identified 992 hydronic heating contractors headquartered in the United Kingdom as of September 2026 and tracks 3,769 professional contacts across them, including 770 with verified work emails. London is the largest hub.

This list covers hydronic heating contractors 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 16, 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 16, 2026 86% judged on-target in blind review

992Companies

3,769Contacts tracked

770Verified emails

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The 25 largest hydronic heating contractors based in the United Kingdom

Ranked by team size

Top 25 of 992 hydronic heating contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to hydronic heating contractors: 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	BAXI	Partial evidence	Warwick, United KingdomHQ checked Sep 16, 2026	1,001-5,000	850 contacts →
	Partial evidence “We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Source: RevenueBase Database · checked Sep 16, 2026
2	Swale Heating Part Of Sureserve	Partial evidence	Sittingbourne, United KingdomHQ checked Sep 16, 2026	201-500	136 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
3	Aston Group	Indirect evidence	Romford, United KingdomHQ checked Sep 16, 2026	51-200	58 contacts →
	Indirect evidence “Aston Group is a leading Building Services and Facilities Maintenance Company for Commercial and Residential clients.” Source: RevenueBase Database · checked Sep 16, 2026
4	Plumbing & GAS Solutions LTD	Strong evidence	Milton Keynes, United KingdomHQ checked Sep 16, 2026	11-50	41 contacts →
	Strong evidence “Plumbing & Gas Solutions Ltd are a Constructionline and CHAS accredited Commercial Plumbing & Heating contractor based in Milton Keynes.” Source: RevenueBase Database · checked Sep 16, 2026
5	Smith's EP UK	Strong evidence	Chelmsford, United KingdomHQ checked Sep 16, 2026	51-200	39 contacts →
	Strong evidence “Founded in 1991, Smith’s EP UK has grown organically to become the UK’s leading supplier of hydronic fan convector products, providing versatile, energy efficient heating…” Source: RevenueBase Database · checked Sep 16, 2026
6	Heatable	Indirect evidence	Warrington, United KingdomHQ checked Sep 16, 2026	11-50	37 contacts →
	Indirect evidence “The UK's trusted boiler, aircon and renewable installers.” Source: RevenueBase Database · checked Sep 16, 2026
7	Ambiente Systems LTD	Strong evidence	Hatfield, United KingdomHQ checked Sep 16, 2026	11-50	33 contacts →
	Strong evidence “Ambiente Systems Ltd has been trading since 2006 and specialises in the design, manufacture and supply of hydronic underfloor heating systems to the trade.” Source: RevenueBase Database · checked Sep 16, 2026
8	M&n Heating & Plumbing	Partial evidence	Banbury, United KingdomHQ checked Sep 16, 2026	51-200	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 16, 2026
9	HCS Mechanical Services	Partial evidence	Skipton, United KingdomHQ checked Sep 16, 2026	51-200	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 16, 2026
10	James Paterson & Sons Plumbing And Heating Limited	Strong evidence	Denny, United KingdomHQ checked Sep 16, 2026	51-200	21 contacts →
	Strong evidence “Established in 1987, James Paterson & Sons are a professional contractor providing all aspects of plumbing and heating services across Scotland.” Source: RevenueBase Database · checked Sep 16, 2026
11	Macbrookgas LTD	Partial evidence	Banham, United KingdomHQ checked Sep 16, 2026	51-200	19 contacts →
	Partial evidence “MACBROOKGAS LTD is a heating and Insulation company based out of United Kingdom.” Source: RevenueBase Database · checked Sep 16, 2026
12	Cleanheat	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	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 16, 2026
13	Home & Industrial Heating Services Limited	Partial evidence	Eastleigh, United KingdomHQ checked Sep 16, 2026	11-50	17 contacts →
	Partial evidence “H&I (Home & Industrial) Heating was established in 1972 as a sole trader/partnership for the Heating Industry.” Source: RevenueBase Database · checked Sep 16, 2026
14	SGS Heating & Electrical LTD	Partial evidence	Salisbury, United KingdomHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “SGS are a heating, plumbing, electrical company specialising in both domestic and commercial applications.” Source: RevenueBase Database · checked Sep 16, 2026
15	Simple Heating Services LTD	Indirect evidence	Liverpool, United KingdomHQ checked Sep 16, 2026	51-200	16 contacts →
	Indirect evidence “Keeping your home or business warm is essential, especially during the winter.” Source: RevenueBase Database · checked Sep 16, 2026
16	UK GAS Services LTD	Indirect evidence	Leicester, United KingdomHQ checked Sep 16, 2026	51-200	15 contacts →
	Indirect evidence “At UK GS we are your trusted home service partner.” Source: RevenueBase Database · checked Sep 16, 2026
17	Tencer LTD	Partial evidence	High Wycombe, United KingdomHQ checked Sep 16, 2026	51-200	14 contacts →
	Partial evidence “Heating, Plumbing, Air Conditioning, Electrical & BMS Installation, Servicing and Repair.” Source: RevenueBase Database · checked Sep 16, 2026
18	Pearce Elite Plumbing & Heating Limited	Indirect evidence	Port Talbot, United KingdomHQ checked Sep 16, 2026	11-50	14 contacts →
	Indirect evidence “We do it all.” Source: RevenueBase Database · checked Sep 16, 2026
19	Clever Energy Boilers	Indirect evidence	Keighley, United KingdomHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “CLEVER ENERGY BOILERS is part of the Green Deal Factory.” Source: RevenueBase Database · checked Sep 16, 2026
20	Ufhn LTD	Partial evidence	Wimborne, United KingdomHQ checked Sep 16, 2026	11-50	13 contacts →
	Partial evidence “UFHN is an award-winning underfloor heating specialist who designs, supplies and installs bespoke heating systems for private residences, multi-residential developments, schools…” Source: RevenueBase Database · checked Sep 16, 2026
21	Premier Heating Solutions	Partial evidence	Reading, United KingdomHQ checked Sep 16, 2026	11-50	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 16, 2026
22	Combat Heating Solutions LTD	Partial evidence	Wednesbury, United KingdomHQ checked Sep 16, 2026	51-200	13 contacts →
	Partial evidence “Combat Heating Solutions has been an established name in the commercial heating industry for more than 50 years.” Source: RevenueBase Database · checked Sep 16, 2026
23	Lord Combustion Services LTD	Partial evidence	Oldbury, United KingdomHQ checked Sep 16, 2026	11-50	12 contacts →
	Partial evidence “Formed in 1982, Lord Combustion Services specialise in the design, installation, repair and maintenance of sustainable heating and hot water systems, supporting over businesses…” Source: RevenueBase Database · checked Sep 16, 2026
24	Watret & CO LTD	Strong evidence	St Albans, United KingdomHQ checked Sep 16, 2026	11-50	12 contacts →
	Strong evidence “Watret & Co Ltd is a commercial heating contractor installing domestic heating systems, commercial projects, housing associations and landlords” Source: RevenueBase Database · checked Sep 16, 2026
25	Home Heating Services	Partial evidence	Perth, United KingdomHQ checked Sep 16, 2026	1-10	10 contacts →
	Partial 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 16, 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: hydronic heating contractors. 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 hydronic heating contractors.
Partial evidence: Its own public description names part of hydronic heating contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydronic heating contractors. 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 992 hydronic heating contractors based in the United Kingdom

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Hydronic heating contractors based in the United Kingdom at a glance

As of Sep 16, 2026

20.4%Verified-email coverage

3.8Average contacts per company

1-10Median size (employees)

7.0%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

717

11-50

190

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 992 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 hydronic heating contractors, 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 “hydronic heating contractors”. 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 hydronic heating contractors), 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 hydronic heating contractors, 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, 770 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 16, 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.

Hydronic heating contractors by metro

Hydronic heating contractors in London69

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 hydronic heating contractors, 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 hydronic heating contractors are there based in the United Kingdom?

RevenueBase identified 992 hydronic heating contractors 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?

BAXI, headquartered in Warwick, tops this list with the largest team on record.

Which city has the most hydronic heating contractors?

London leads with 69 headquartered companies, followed by Leeds (15) and Bristol (10).

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 770 verified decision-maker contacts tracked across these 992 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 16, 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.