Company lists · Data refreshed September 2026

Top 25 Electric heating companies based in the United Kingdom

Name: Electric heating 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 1,036 companies tracked

RevenueBase identified 1,036 electric heating companies headquartered in the United Kingdom as of September 2026 and tracks 9,835 professional contacts across them, including 3,292 with verified work emails. London is the largest hub.

This list covers electric heating 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 19, 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 19, 2026 86% judged on-target in blind review

1,036Companies

9,835Contacts tracked

3,292Verified emails

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The 25 largest electric heating companies based in the United Kingdom

Ranked by team size

Top 25 of 1,036 electric heating companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to electric heating companies: 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 19, 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 19, 2026
2	Vital Energi Utilities Limited	Partial evidence	Blackburn, United KingdomHQ checked Sep 19, 2026	501-1,000	709 contacts →
	Partial evidence “Our 30+ years’ experience have involved us in the creation of major UK district heating networks in areas such as Sheffield, Nottingham and London.” Source: RevenueBase Database · checked Sep 19, 2026
3	Ideal Heating	Partial evidence	Hull, United KingdomHQ checked Sep 19, 2026	501-1,000	286 contacts →
	Partial evidence “The UK’s leading heating manufacturer, providing reliable, sustainable warmth through boilers, heat pumps and controls Rated Excellent on Trustpilot Award-winning Keeping Homes…” Source: RevenueBase Database · checked Sep 19, 2026
4	Dimplex UK	Strong evidence	Southampton, United KingdomHQ checked Sep 19, 2026	501-1,000	201 contacts →
	Strong evidence “For over 75 years, Dimplex has been the trusted name for electric heating.” Source: RevenueBase Database · checked Sep 19, 2026
5	Vaillant UK	Partial evidence	Belper, United KingdomHQ checked Sep 19, 2026	501-1,000	179 contacts →
	Partial evidence “What does it take to deliver confidence at every stage of the heating journey?” Source: RevenueBase Database · checked Sep 19, 2026
6	Exheat	Partial evidence	Watton, United KingdomHQ checked Sep 19, 2026	51-200	142 contacts →
	Partial evidence “At EXHEAT, we design and manufacture electric process heaters and control solutions.” Source: RevenueBase Database · checked Sep 19, 2026
7	Swale Heating Part Of Sureserve	Partial evidence	Sittingbourne, United KingdomHQ checked Sep 19, 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 19, 2026
8	Robert Heath Heating	Strong evidence	New Malden, United KingdomHQ checked Sep 19, 2026	201-500	122 contacts →
	Strong evidence “Robert Heath Heating is a leading provider of heating, hot water and electrical solutions for the social housing sector and private clients in the UK.” Source: RevenueBase Database · checked Sep 19, 2026
9	BOXT	Indirect evidence	Leeds, United KingdomHQ checked Sep 19, 2026	51-200	116 contacts →
	Indirect evidence “We started out as a trailblazing boiler installation company in 2017 – the first to offer everything effortlessly online.” Source: RevenueBase Database · checked Sep 19, 2026
10	Grant Engineering UK LTD	Partial evidence	Swindon, United KingdomHQ checked Sep 19, 2026	51-200	115 contacts →
	Partial evidence “We are a leading supplier of sustainable heating systems, including HVO boilers, air source heat pumps, solar thermal, hot water storage cylinders, aluminium radiators and…” Source: RevenueBase Database · checked Sep 19, 2026
11	Glow Green	Indirect evidence	Bournemouth, United KingdomHQ checked Sep 19, 2026	51-200	110 contacts →
	Indirect evidence “Glow Green is one of the UK's leading installers of Solar Panels, Battery Storage, Heat Pumps, Boilers, AC Units, & EV Chargers.” Source: RevenueBase Database · checked Sep 19, 2026
12	Hometree	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	102 contacts →
	Indirect evidence “Hometree is a home energy services company on a mission to accelerate the transition to net zero.” Source: RevenueBase Database · checked Sep 19, 2026
13	Rointe Heating	Strong evidence	Peterborough, United KingdomHQ checked Sep 19, 2026	51-200	83 contacts →
	Strong evidence “With over 35 years of experience, and as Europe's leading manufacturer of electric heating, Rointe is ideally placed to help our customers choose the right heating system, at the…” Source: RevenueBase Database · checked Sep 19, 2026
14	0800 Repair	Partial evidence	Houghton-le-spring, United KingdomHQ checked Sep 19, 2026	201-500	80 contacts →
	Partial evidence “We specialise in a whole range of professional, gas, heating and boiler services, as well as home insulation and PV throughout UK.” Source: RevenueBase Database · checked Sep 19, 2026
15	Wozair Limited	Partial evidence	Gillingham, United KingdomHQ checked Sep 19, 2026	51-200	79 contacts →
	Partial 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 19, 2026
16	Stelrad LTD	Partial evidence	Mexborough, United KingdomHQ checked Sep 19, 2026	201-500	75 contacts →
	Partial evidence “Celebrating our 90th anniversary, Stelrad is the UK market leader in central heating radiators, providing the most extensive selection of radiators in various sizes compared to…” Source: RevenueBase Database · checked Sep 19, 2026
17	Powrmatic Limited	Strong evidence	Ilminster, United KingdomHQ checked Sep 19, 2026	51-200	73 contacts →
	Strong 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 19, 2026
18	Sureserve Compliance North	Partial evidence	Glasgow, United KingdomHQ checked Sep 19, 2026	51-200	72 contacts →
	Partial evidence “Established in 1996 we are a leading provider of Gas Service & Maintenance and installation of Heating Systems to the Social Housing Sector across Scotland.” Source: RevenueBase Database · checked Sep 19, 2026
19	Nu-Heat Underfloor Heating & Renewables	Partial evidence	Honiton, United KingdomHQ checked Sep 19, 2026	51-200	70 contacts →
	Partial evidence “As the UK's largest supplier of warm water underfloor heating and integrated renewables, Nu‑Heat delivers fully designed, energy efficient systems to installers, housebuilders…” Source: RevenueBase Database · checked Sep 19, 2026
20	ECO Approach	Indirect evidence	Beckenham, United KingdomHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “We’re a leading nationwide property services company established in 2013.” Source: RevenueBase Database · checked Sep 19, 2026
21	Intergas Heating LTD	Indirect evidence	Kidderminster, United KingdomHQ checked Sep 19, 2026	201-500	61 contacts →
	Indirect evidence “We’re Dutch, we manufacture ultra-efficient domestic boilers and we want to make the world a better place for all of us.” Source: RevenueBase Database · checked Sep 19, 2026
22	Rendesco	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	60 contacts →
	Partial evidence “Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Source: RevenueBase Database · checked Sep 19, 2026
23	Heat Trace Limited	Strong evidence	Frodsham, United KingdomHQ checked Sep 19, 2026	51-200	59 contacts →
	Strong evidence “Heat Trace Limited (HTL) is an innovative British manufacturer of electric heating cables & associated equipment.” Source: RevenueBase Database · checked Sep 19, 2026
24	Alpha Heating Innovation	Partial evidence	Wrotham Heath, United KingdomHQ checked Sep 19, 2026	51-200	55 contacts →
	Partial evidence “Established over 50 years, Alpha is recognised today as one of the leaders in the UK’s heating industry.” Source: RevenueBase Database · checked Sep 19, 2026
25	WMS Underfloor Heating	Partial evidence	Brookmans Park, United KingdomHQ checked Sep 19, 2026	11-50	51 contacts →
	Partial evidence “Leading supplier and installer of underfloor heating for residential developments in the UK.” Source: RevenueBase Database · checked Sep 19, 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: electric heating 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 electric heating companies.
Partial evidence: Its own public description names part of electric heating companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electric heating 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 1,036 electric heating companies based in the United Kingdom

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Electric heating companies based in the United Kingdom at a glance

As of Sep 19, 2026

33.5%Verified-email coverage

9.5Average contacts per company

1-10Median size (employees)

5.5%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

565

11-50

316

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,036 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 electric heating 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 “electric heating 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 electric heating 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 electric heating 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, 3,292 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 19, 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.

Electric heating companies by metro

Electric heating companies in London57

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 electric heating 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 electric heating companies are there based in the United Kingdom?

RevenueBase identified 1,036 electric heating 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?

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

Which city has the most electric heating companies?

London leads with 57 headquartered companies, followed by Glasgow (21) and Leeds (18).

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 3,292 verified decision-maker contacts tracked across these 1,036 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 19, 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.