Company lists · Data refreshed September 2026

Top 25 District heating system companies based in Denmark

Name: District heating system companies based in Denmark
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 98 companies tracked

RevenueBase identified 98 district heating system companies headquartered in Denmark as of September 2026 and tracks 2,499 professional contacts across them, including 260 with verified work emails. Herning is the largest hub.

This list covers district heating system companies headquartered in Denmark, 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

98Companies

2,499Contacts tracked

260Verified emails

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The 25 largest district heating system companies based in Denmark

Ranked by team size

Top 25 of 98 district heating system companies based in Denmark, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to district heating system 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	Logstor District Heating Solutions	Partial evidence	DenmarkHQ checked Sep 19, 2026	1,001-5,000	425 contacts →
	Partial evidence “With more than 50 years of research, development and experience, we have become the leading manufacturer of pre-insulated pipe systems.” Source: RevenueBase Database · checked Sep 19, 2026
2	Kredsløb	Indirect evidence	Brabrand, DenmarkHQ checked Sep 19, 2026	501-1,000	337 contacts →
	Indirect evidence “Kredsløb is an utility company with around 500 employees who work with contributing to the green transition and supporting our customers and partners in doing the same every day.” Source: RevenueBase Database · checked Sep 19, 2026
3	Fjernvarme FYN A S	Indirect evidence	Odense C, DenmarkHQ checked Sep 19, 2026	201-500	276 contacts →
	Indirect evidence “Fjernvarmeforsyningen er en nonprofit virksomhed, hvor fjernvarmeprisen er omkostningsbestemt, og økonomisk følger princippet "hvile i sig selv".” Source: RevenueBase Database · checked Sep 19, 2026
4	VEKS	Indirect evidence	Albertslund, DenmarkHQ checked Sep 19, 2026	51-200	104 contacts →
	Indirect evidence “Fjernvarme er et af de vigtigste redskaber for, at Danmark kan nå målsætningen om 70% reduktion af CO2-udledningen.” Source: RevenueBase Database · checked Sep 19, 2026
5	Isoplus Danmark	Strong evidence	Middelfart, DenmarkHQ checked Sep 19, 2026	51-200	80 contacts →
	Strong evidence “isoplus Piping Systems supplies complete pre-insulated piping systems for district heating and cooling to Denmark, The Nordic countries, and UK.” Source: RevenueBase Database · checked Sep 19, 2026
6	Danish District Heating Association	Strong evidence	Kolding, DenmarkHQ checked Sep 19, 2026	51-200	69 contacts →
	Strong evidence “Danish District Heating Association (DDHA) was founded in 1957 with the aim of organizing Danish district heating companies; facilitate cooperation between these members; and…” Source: RevenueBase Database · checked Sep 19, 2026
7	Østergaard Entreprise A S	Indirect evidence	Esbjerg N, DenmarkHQ checked Sep 19, 2026	51-200	68 contacts →
	Indirect evidence “Vi er Østergaard Entreprise A/S.” Source: RevenueBase Database · checked Sep 19, 2026
8	Innargi	Indirect evidence	Copenhagen, DenmarkHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “Decarbonising heat - one community at a time.” Source: RevenueBase Database · checked Sep 19, 2026
9	Aalborg CSP A S	Strong evidence	Aalborg, DenmarkHQ checked Sep 19, 2026	51-200	60 contacts →
	Strong evidence “Aalborg CSP helps power plants and district heating utilities lower energy costs for their customers.” Source: RevenueBase Database · checked Sep 19, 2026
10	Metro Therm A S	Indirect evidence	Helsinge, DenmarkHQ checked Sep 19, 2026	201-500	56 contacts →
	Indirect evidence “METRO THERM leverer det varme vand til hele Danmark – gennem vandvarmere, fjernvarmeunits og varmepumper.” Source: RevenueBase Database · checked Sep 19, 2026
11	Vølund Varmeteknik	Indirect evidence	Herning, DenmarkHQ checked Sep 19, 2026	51-200	48 contacts →
	Indirect evidence “Vølund Varmeteknik leverer varmetekniske løsninger til forbrugere, landmænd, skoler, institutioner m.m.” Source: RevenueBase Database · checked Sep 19, 2026
12	CTR I S	Indirect evidence	Frederiksberg, DenmarkHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence “CTR leverer sikker, billig og grøn fjernvarme for Frederiksberg, Gentofte, Gladsaxe, Tårnby og Københavns Kommune.” Source: RevenueBase Database · checked Sep 19, 2026
13	Danfoss Redan A S	Indirect evidence	Hårup, DenmarkHQ checked Sep 19, 2026	51-200	32 contacts →
	Indirect evidence “COMFORT FIRST” er målet for Danfoss Redan A/S i alle led.” Source: RevenueBase Database · checked Sep 19, 2026
14	E.On I Danmark	Indirect evidence	Frederiksberg, DenmarkHQ checked Sep 19, 2026	51-200	30 contacts →
	Indirect evidence “E.ON i Danmark producerer og leverer fjernvarme til mindre byer, og er dermed en del af svaret på samfundets ønske om at øge andelen af grøn energi.” Source: RevenueBase Database · checked Sep 19, 2026
15	TVIS	Indirect evidence	7000 Fredericia, DenmarkHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “The combined efforts of four municipalities in the middle of Denmark provides households or the equivalent of approximately homes with affordable, stable, and eco-considerate…” Source: RevenueBase Database · checked Sep 19, 2026
16	DBDH	Strong evidence	Frederiksberg, DenmarkHQ checked Sep 19, 2026	1-10	28 contacts →
	Strong evidence “DBDH is a private organization representing the leading actors of the Danish district heating sector including- Heat and combined heat and power production companies - Waste…” Source: RevenueBase Database · checked Sep 19, 2026
17	Høje Taastrup Fjernvarme	Indirect evidence	Taastrup Capital Of Denmark, DenmarkHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Høje Taastrup Fjernvarme a.m.b.a.” Source: RevenueBase Database · checked Sep 19, 2026
18	Ingeniør Huse A S	Indirect evidence	Brabrand, DenmarkHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Ingeniør Huse er en rådgivnings- og konsulentvirksomhed, der tilbyder ekspertrådgivning til fjernvarme- og kølebranchen plus i nogen grad til boligforeninger og offentlige…” Source: RevenueBase Database · checked Sep 19, 2026
19	Neotherm A S	Indirect evidence	Frederikssund, DenmarkHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “Neotherm A/S leverer helhedsløsninger til VVS-branchen inden for gulvvarmesystemer, brugsvandssystemer, køle- varmecentraler, klima og energiløsninger samt strålevarme.” Source: RevenueBase Database · checked Sep 19, 2026
20	DFP	Indirect evidence	Kolding, DenmarkHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “DFP står for Dansk Fjernvarmes Projektselskab, og så enkelt er det: Vi har til formål at beskæftige os med projekter udelukkende for fjernvarmeværkerne, og det har vi gjort siden…” Source: RevenueBase Database · checked Sep 19, 2026
21	Christoffersen & Knudsen A S	Indirect evidence	Rødovre, DenmarkHQ checked Sep 19, 2026	51-200	16 contacts →
	Indirect evidence “Vi er en moderne VVS-virksomhed, som vægter faglige kvalifikationer højt, fordi vi vil være Danmarksmestre i boligrenovering.” Source: RevenueBase Database · checked Sep 19, 2026
22	HS Tarm A S	Indirect evidence	Tarm, DenmarkHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Varmepumper, serviceaftaler, biobrændsel, gaskedler, lagertanke, varmtvandsbeholdere, radiatorer, elkedler HS Tarm A/S fører en række produkter, som - ved at udnytte kilder til…” Source: RevenueBase Database · checked Sep 19, 2026
23	Svendborg Fjernvarme	Strong evidence	Svendborg Of Southern, DenmarkHQ checked Sep 19, 2026	11-50	14 contacts →
	Strong evidence “Svendborg Fjernvarme is a consumer-owned company that supplies district heating to the city of Svendborg.” Source: RevenueBase Database · checked Sep 19, 2026
24	Thermonova	Indirect evidence	Aars, DenmarkHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Thanks for stopping by.” Source: RevenueBase Database · checked Sep 19, 2026
25	Haderslev Fjernvarme	Indirect evidence	Haderslev, DenmarkHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Haderslev Fjernvarme A.m.b.a.” 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: district heating system 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 district heating system companies.
Partial evidence: Its own public description names part of district heating system companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name district heating system 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 98 district heating system companies based in Denmark

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District heating system companies based in Denmark at a glance

As of Sep 19, 2026

10.4%Verified-email coverage

25.5Average contacts per company

11-50Median size (employees)

4.1%Largest-city concentration · Herning

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Denmark, so it is reported there. Company counts and contact totals on this page are exact for Denmark, over 98 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 district heating system 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 Denmark whose own description of what they do matches “district heating system 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 district heating system 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 district heating system companies, and records with no verified work email. Companies headquartered outside Denmark 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, 260 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.

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 district heating system 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 district heating system companies are there based in Denmark?

RevenueBase identified 98 district heating system companies headquartered in Denmark 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?

Logstor District Heating Solutions, headquartered in Denmark, tops this list with the largest team on record.

Which city has the most district heating system companies?

Herning leads with 4 headquartered companies, followed by Horsens (4) and Kolding (3).

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 260 verified decision-maker contacts tracked across these 98 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.