Company lists · Data refreshed October 2026

Top 25 District energy system manufacturers worldwide

RevenueBase identified 3,376 company matches for district energy system manufacturers worldwide as of October 2026 and tracks 61,365 professional contacts across them, including 20,053 with verified work emails. Germany is the largest market and Berlin the largest hub.

This list covers company matches for district energy system manufacturers worldwide, 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 October 11, 2026. Country and city lists for district energy system manufacturers follow the table.

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 Oct 11, 2026 How this list was built
3,376Companies
61,365Contacts tracked
20,053Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest district energy system manufacturers worldwide

Ranked by team size
Top 25 of 3,376 company matches for district energy system manufacturers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBoulogne-billancourt, FranceHQ recorded Oct 11, 20265,001-10,0003,448 contacts →

Exact match

“Fondé en France en 1963, le groupe IDEX, fort de près de 6 500 collaborateurs, développe, conçoit, finance, construit et exploite des infrastructures énergétiques locales et…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
2Exact matchRemscheid, GermanyHQ recorded Oct 11, 202610001+3,153 contacts →

Exact match

“Our corporate vision shapes everything we do and inspires our employees every day.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
3Exact matchNordborg, DenmarkHQ recorded Oct 11, 202610001+1,227 contacts →

Exact match

“At Danfoss Climate Solutions, we engineer energy-efficient heating and cooling solutions to help the world get more out of less.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
4Exact matchLiverpool, United KingdomHQ recorded Oct 11, 20261,001-5,0001,055 contacts →

Exact match

“Clarke Energy, a Rehlko company, specialises in energy efficient, low carbon and flexible energy systems.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
5Exact matchWarwick, United KingdomHQ recorded Oct 11, 20261,001-5,000884 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 · Oct 11, 2026 · View company records in RevenueBase
6Exact matchEysins, SwitzerlandHQ recorded Oct 11, 20261,001-5,000794 contacts →

Exact match

“At IMI, our Climate Control sector designs intelligent hydronic solutions that optimise comfort, energy use, and system reliability, helping create smarter, greener, more…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
7Exact matchBerlin, GermanyHQ recorded Oct 11, 20261,001-5,000793 contacts →

Exact match

“Wärme und Energie für Berlin Als BEW Berliner Energie und Wärme sind wir Teil der Berliner Landesfamilie.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
8Exact matchDurham, NC, United StatesHQ recorded Oct 11, 2026501-1,000761 contacts →

Exact match

“PowerSecure, a Southern Company subsidiary, is a leading provider of innovative energy solutions to electric utilities and their industrial, institutional, and commercial…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
9Exact matchBlackburn, United KingdomHQ recorded Oct 11, 2026501-1,000749 contacts →

Exact match

“Our 30+ years’ experience have involved us in the creation of major UK district heating networks in areas such as Sheffield, Nottingham and London.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
10Exact matchLegnago, ItalyHQ recorded Oct 11, 20261,001-5,000730 contacts →

Exact match

“For over 100 years, Riello’s Energy For Life has been at the core of its industrial policy, guiding the company in the development of solutions designed to provide comfort and…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
11Exact matchHolzminden, GermanyHQ recorded Oct 11, 20265,001-10,000496 contacts →

Exact match

“STIEBEL ELTRON bietet hocheffiziente Produkte und Dienstleistungen für die Heizung, Kühlung, Lüftung und Warmwasserbereitung von Gebäuden.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
12Exact matchMainburg, GermanyHQ recorded Oct 11, 20261,001-5,000493 contacts →

Exact match

“As a leading supplier of heating and air handling systems, we are perfectly in tune with you.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13Exact matchİstanbul, TürkiyeHQ recorded Oct 11, 2026501-1,000472 contacts →

Exact match

“1969 yılında faaliyetlerine başlayan ve 2013 yılı itibarıyla iklimlendirme sektöründe Avrupa’nın ilk üç şirketi arasında yer alan BDR Thermea Group bünyesine katılan Baymak…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
14Exact matchBumi Serpong Damai City Tangerang Selatan, IndonesiaHQ recorded Oct 11, 2026201-500454 contacts →

Exact match

“Euroasiatic (EA) is a Heat & Power Generation Solutions Provider.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
15Exact matchSan Bonifacio, ItalyHQ recorded Oct 11, 20261,001-5,000435 contacts →

Exact match

“Comfort, designed around you – Since 1955, Ferroli has been a trusted name in HVAC, delivering innovative solutions for heating, cooling and hot water that combine comfort, energy…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
16Exact matchDenmarkHQ recorded Oct 11, 20261,001-5,000422 contacts →

Exact match

“With more than 50 years of research, development and experience, we have become the leading manufacturer of pre-insulated pipe systems.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17Exact matchApeldoorn, NetherlandsHQ recorded Oct 11, 2026201-500408 contacts →

Exact match

“Remeha, the comfort innovators Remeha ontwikkelt al sinds 1935 voortdurend innovatieve en energiezuinige producten voor warmte en warm water, zowel voor woningen als utiliteit.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
18Exact matchRanders Nv, DenmarkHQ recorded Oct 11, 2026201-500380 contacts →

Exact match

“Verdo Holding A/S er en forbrugerejet energikoncern med hovedsæde i Randers, der består af et holdingselskab samt datterselskaber inden for vand, varme og elproduktion.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
19Exact matchLebanon, TN, IndiaHQ recorded Oct 11, 2026201-500346 contacts →

Exact match

“Lochinvar, LLC is a leading manufacturer of high-efficiency water heaters, boilers, pool heaters and custom pre-piped packaged systems.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20Exact matchBraeside, AustraliaHQ recorded Oct 11, 2026201-500317 contacts →

Exact match

“Following Rinnai's international origins dating back more than 100 years, Rinnai Australia was established 50 years ago and since then has been providing Australians with the best…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21Exact matchSan Maurizio D'opaglio, ItalyHQ recorded Oct 11, 2026501-1,000316 contacts →

Exact match

“True Made in Italy.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22Exact matchEindhoven, NetherlandsHQ recorded Oct 11, 2026201-500298 contacts →

Exact match

“Ennatuurlijk koppelt lokale producenten en ontvangers van duurzame warmte en koude aan elkaar.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23Exact matchBurr Ridge, IL, United StatesHQ recorded Oct 11, 2026501-1,000294 contacts →

Exact match

“Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24Exact matchBoston, MA, United StatesHQ recorded Oct 11, 2026501-1,000289 contacts →

Exact match

“Vicinity Energy is a leading district energy company that owns and operates the largest portfolio of district energy systems nationwide, providing steam, hot water, and chilled…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25Exact matchOdense C, DenmarkHQ recorded Oct 11, 2026201-500281 contacts →

Exact match

“Fjernvarmeforsyningen er en nonprofit virksomhed, hvor fjernvarmeprisen er omkostningsbestemt, og økonomisk følger princippet "hvile i sig selv".”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase

Showing 25 of 3,376 district energy system manufacturers worldwide

See the full list, filter by size, metro and specialty, and access 20,053 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

District energy system manufacturers worldwide at a glance

As of Oct 11, 2026
32.7%Verified-email coverage
18.2Average contacts per company
11-50Median size (employees)
0.7%Largest-city concentration · Berlin
Oct 11, 2026Page data refreshed

Companies by employee count

1-10
1,407
11-50
1,187
51-200
455
201-500
141
501-1,000
64
1,001-5,000
47
5,001-10,000
12
10001+
16

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for district energy system manufacturers are linked below.
What qualifies
Company records worldwide whose business descriptions match “district energy system manufacturers” 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. 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 20,053 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 October 11, 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.

District energy system manufacturers by location

21 lists · largest first

Every District energy system manufacturers 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 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 “district energy system manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many district energy system manufacturers are there worldwide?

RevenueBase identified 3,376 company matches for district energy system manufacturers worldwide as of October 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?

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

Which country has the most district energy system manufacturers?

Germany leads with 448 companies, followed by Italy (234) and France (204). Every district energy system manufacturers list by country and city is linked on this page.

Which city has the most district energy system manufacturers?

Berlin leads with 23 company records, followed by London (20) and Istanbul (14).

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 20,053 professional contacts with verified work emails tracked across these 3,376 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 October 11, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,376 district energy system manufacturers worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.