Company lists · Data refreshed September 2026

Top 25 Biomass boiler installation companies worldwide

Name: Biomass boiler installation companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 3,262 companies tracked

RevenueBase identified 3,262 biomass boiler installation companies worldwide as of September 2026 and tracks 25,524 professional contacts across them, including 5,844 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers biomass boiler installation companies worldwide, 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. Country and city lists for biomass boiler installation companies follow the table.

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

3,262Companies

25,524Contacts tracked

5,844Verified emails

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The 25 largest biomass boiler installation companies worldwide

Ranked by team size

Top 25 of 3,262 biomass boiler installation companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to biomass boiler installation 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	Feenstra	Partial evidence	Lelystad, NetherlandsHQ checked Sep 19, 2026	1,001-5,000	781 contacts →
	Partial evidence “Sinds het ontstaan in 1947 is Feenstra marktleider in installatietechniek met een nationale dekking.” Source: RevenueBase Database · checked Sep 19, 2026
2	John Thompson	Indirect evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	1,001-5,000	629 contacts →
	Indirect evidence “John Thompson is a leader in energy and environmental solutions through value engineering and innovation.” Source: RevenueBase Database · checked Sep 19, 2026
3	Babcock Wanson International	Partial evidence	Nerac, FranceHQ checked Sep 19, 2026	501-1,000	388 contacts →
	Partial evidence “BABCOCK WANSON offers a complete range of products and services for industrial boiler house.” Source: RevenueBase Database · checked Sep 19, 2026
4	Vyncke	Indirect evidence	Harelbeke, BelgiumHQ checked Sep 19, 2026	201-500	353 contacts →
	Indirect evidence “VYNCKE is a fourth-generation family business founded in 1912, with deep roots in Flanders, Belgium.” Source: RevenueBase Database · checked Sep 19, 2026
5	Cerrey	Indirect evidence	San Nicolás De Los Garza, MexicoHQ checked Sep 19, 2026	501-1,000	298 contacts →
	Indirect evidence “CERREY, a leading Mexican company, is one of the main manufacturers of steam generators in the Americas.” Source: RevenueBase Database · checked Sep 19, 2026
6	Aäsgard	Partial evidence	Rennes, FranceHQ checked Sep 19, 2026	501-1,000	269 contacts →
	Partial evidence “Aäsgard est une enseigne de distribution, d’installation et d'entretien de poêles à bois et à granulés haut de gamme, au design contemporain, d’origine essentiellement scandinave…” Source: RevenueBase Database · checked Sep 19, 2026
7	Mimsan Grup	Indirect evidence	Malatya, TürkiyeHQ checked Sep 19, 2026	501-1,000	215 contacts →
	Indirect evidence “Mimsan Grup; Yakma ve Enerji Sistemleri Üreten 41 Yıllık Bir Deneyime Sahip Endüstri Firmasıdır.” Source: RevenueBase Database · checked Sep 19, 2026
8	Clyde Industries	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	201-500	209 contacts →
	Partial evidence “Clyde Industries, a subsidiary of Kadant Inc, headquartered in Atlanta, Georgia, is a leading provider of boiler efficiency solutions for the most demanding applications in the…” Source: RevenueBase Database · checked Sep 19, 2026
9	Cleaver-Brooks Sales And Service	Partial evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	201-500	193 contacts →
	Partial evidence “Cleaver-Brooks Sales and Service, is one of the most innovative and fastest growing boiler services companies in the United States.” Source: RevenueBase Database · checked Sep 19, 2026
10	Bonarius Bedrijven	Partial evidence	Zwanenburg, NetherlandsHQ checked Sep 19, 2026	201-500	186 contacts →
	Partial evidence “Bonarius Bedrijven De naam Bonarius was lange tijd synoniem voor de aanleg en het onderhoud van cv-installaties.” Source: RevenueBase Database · checked Sep 19, 2026
11	Schmid AG Energy Solutions	Indirect evidence	Eschlikon, SwitzerlandHQ checked Sep 19, 2026	201-500	168 contacts →
	Indirect evidence “Die Schmid AG energy solutions mit Hauptsitz in Eschlikon TG ist ein Schweizer Familienunternehmen, welches seit 1936 auf Lösungen im Bereich Holzenergie spezialisiert ist.” Source: RevenueBase Database · checked Sep 19, 2026
12	Victory Energy Operations, LLC	Partial evidence	Collinsville, OK, United StatesHQ checked Sep 19, 2026	201-500	162 contacts →
	Partial evidence “Victory Energy Operations, LLC is a leading, single-source (concept to completion) supplier of custom-engineered industrial boiler systems and advanced technologies worldwide…” Source: RevenueBase Database · checked Sep 19, 2026
13	Vaillant Group UK	Indirect evidence	United KingdomHQ checked Sep 19, 2026	10001+	143 contacts →
	Indirect evidence “Founded 1874 in Germany and still family owned Vaillant employ over To which we develop and manufacture our products at 16 sites in 8 Countries, and sell our products to over 80…” Source: RevenueBase Database · checked Sep 19, 2026
14	ICAVI	Indirect evidence	Pouso Redondo, BrazilHQ checked Sep 19, 2026	201-500	142 contacts →
	Indirect evidence “ICAVI – Indústria de Caldeiras Vale do Itajaí S/A, is located in the municipality of Pouso Redondo, in the state of Santa Catarina.” Source: RevenueBase Database · checked Sep 19, 2026
15	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
16	Aalborg Energie Technik A S	Strong evidence	Aalborg, DenmarkHQ checked Sep 19, 2026	51-200	134 contacts →
	Strong evidence “Welcome to a Greener World - 24/7 Aalborg Energie Technik a/s (AET) is a leading, independent engineering and contracting company supplying biomass-fired and residue-fired boiler…” Source: RevenueBase Database · checked Sep 19, 2026
17	WARE	Partial evidence	Louisville, KY, United StatesHQ checked Sep 19, 2026	51-200	131 contacts →
	Partial evidence “WARE is a commercial and industrial, boiler rental and service company.” Source: RevenueBase Database · checked Sep 19, 2026
18	Fabryka Kotłów Sefako S.A	Indirect evidence	Sędziszów, PolandHQ checked Sep 19, 2026	1,001-5,000	119 contacts →
	Indirect evidence “Fabryka Kotłów “SEFAKO” S.A.” Source: RevenueBase Database · checked Sep 19, 2026
19	Leroux & Lotz Technologies LLT	Strong evidence	Nantes, FranceHQ checked Sep 19, 2026	51-200	118 contacts →
	Strong evidence “Leroux & Lotz Technologies, a recognised expert in industrial boilers and combustion systems, offers tailor-made solutions for all types of biomass, cogeneration and incineration…” Source: RevenueBase Database · checked Sep 19, 2026
20	Heat Merchants Group	Indirect evidence	Athlone, IrelandHQ checked Sep 19, 2026	201-500	114 contacts →
	Indirect evidence “Heat Merchants Group trading as Heat Merchants, Bathroom Merchants, and Tubs & Tiles, is part of Wolseley group since 2022.” Source: RevenueBase Database · checked Sep 19, 2026
21	KWB Gmbh	Partial evidence	St. Margarethen/raab, FranceHQ checked Sep 19, 2026	201-500	113 contacts →
	Partial evidence “KWB stands for Kraft (power) and Wärme (heat) from Biomasse (biomass) and is synonymous with cutting-edge biomass heating systems.” Source: RevenueBase Database · checked Sep 19, 2026
22	Cochran	Partial evidence	Annan, United KingdomHQ checked Sep 19, 2026	201-500	110 contacts →
	Partial evidence “Cochran has been embedded within industrial boiler manufacturing since 1878.” Source: RevenueBase Database · checked Sep 19, 2026
23	E2s	Indirect evidence	Villeurbanne, FranceHQ checked Sep 19, 2026	201-500	107 contacts →
	Indirect evidence “E2S, prend en charge l'entretien, le dépannage, les travaux de rénovation et d'optimisation, pour vos équipements, notamment de chauffage collectif, de petites et moyennes…” Source: RevenueBase Database · checked Sep 19, 2026
24	Hargassner GES MBH	Indirect evidence	Weng, AustriaHQ checked Sep 19, 2026	501-1,000	106 contacts →
	Indirect evidence “Die Natur ist unsere Lebensader.” Source: RevenueBase Database · checked Sep 19, 2026
25	ICI Powering Evolution	Indirect evidence	Frazione Campagnola Di Zevio, ItalyHQ checked Sep 19, 2026	51-200	101 contacts →
	Indirect evidence “ICI Powering Evolution develops advanced technologies and solutions for heat and energy generation, in collaboration with strategic partners.” 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: biomass boiler installation 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 biomass boiler installation companies.
Partial evidence: Its own public description names part of biomass boiler installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biomass boiler installation 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 3,262 biomass boiler installation companies worldwide

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Biomass boiler installation companies worldwide at a glance

As of Sep 19, 2026

22.9%Verified-email coverage

7.8Average contacts per company

1-10Median size (employees)

0.6%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,659

11-50

1,049

51-200

327

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 biomass boiler installation 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.
Coverage: Every country. Country and city lists for biomass boiler installation companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “biomass boiler installation 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 biomass boiler installation 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 biomass boiler installation companies, and records with no verified work email.
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, 5,844 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.

Biomass boiler installation companies by location

18 lists · largest first

Every Biomass boiler installation companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 biomass boiler installation 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 biomass boiler installation companies are there worldwide?

RevenueBase identified 3,262 biomass boiler installation companies worldwide 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?

Feenstra, headquartered in Lelystad, tops this list with the largest team on record.

Which country has the most biomass boiler installation companies?

The United Kingdom leads with 553 companies, followed by France (423) and Italy (227). Every biomass boiler installation companies list by country and city is linked on this page.

Which city has the most biomass boiler installation companies?

London leads with 20 headquartered companies, followed by Madrid (12) and Pune (9).

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 5,844 verified decision-maker contacts tracked across these 3,262 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.