Company lists · Data refreshed September 2026

Top 25 Industrial heat providers based in Austria

Name: Industrial heat providers based in Austria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 69 companies tracked

RevenueBase identified 69 industrial heat providers headquartered in Austria as of September 2026 and tracks 1,015 professional contacts across them, including 276 with verified work emails. Wien is the largest hub.

This list covers industrial heat providers headquartered in Austria, 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 17, 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 17, 2026 86% judged on-target in blind review

69Companies

1,015Contacts tracked

276Verified emails

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The 25 largest industrial heat providers based in Austria

Ranked by team size

Top 25 of 69 industrial heat providers based in Austria, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial heat providers: 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	Ebner Industrieofenbau	Partial evidence	Leonding, AustriaHQ checked Sep 17, 2026	1,001-5,000	194 contacts →
	Partial evidence “Global specialist in heat treatment furnace facilities.” Source: RevenueBase Database · checked Sep 17, 2026
2	Windhager BHT Group	Indirect evidence	Seekirchen Am Wallersee, AustriaHQ checked Sep 17, 2026	501-1,000	105 contacts →
	Indirect evidence “Rocke die Zukunft mit REINSTEM HEIZEN Steige mit uns auf eine moderne Heizlösung um, die nicht nur umweltfreundlich, sondern auch zukunftssicher ist.” Source: RevenueBase Database · checked Sep 17, 2026
3	Vaillant Österreich	Indirect evidence	Wien, AustriaHQ checked Sep 17, 2026	201-500	87 contacts →
	Indirect evidence “Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.” Source: RevenueBase Database · checked Sep 17, 2026
4	Aichelin Group	Strong evidence	Moedling, AustriaHQ checked Sep 17, 2026	1,001-5,000	50 contacts →
	Strong evidence “As part of Berndorf AG, AICHELIN Group is a leading provider of heat treatment solutions, such as industrial furnaces, induction hardening plants, industrial gas burners systems…” Source: RevenueBase Database · checked Sep 17, 2026
5	Herz Armaturen Ges.M.B.H	Indirect evidence	Vienna, AustriaHQ checked Sep 17, 2026	1,001-5,000	45 contacts →
	Indirect evidence “Die HERZ-Gruppe ist mit rund 3.500 Mitarbeitern und 44 Produktionsstandorten im In- und Ausland einer der bedeutendsten Hersteller von Armaturen, Fittingen, Regelungen und…” Source: RevenueBase Database · checked Sep 17, 2026
6	Etherma Elektrowärme Gmbh	Indirect evidence	Henndorf, AustriaHQ checked Sep 17, 2026	51-200	24 contacts →
	Indirect evidence “As a specialist in electric heating systems, ETHERMA provides you with a tailor-made service package with all the know-how you need for this.” Source: RevenueBase Database · checked Sep 17, 2026
7	Markus Stolz Gmbh & CO KG	Indirect evidence	Bludenz, AustriaHQ checked Sep 17, 2026	501-1,000	22 contacts →
	Indirect evidence “Unsere Firmengruppe ist mit 14 Standorten und über 800 Mitarbeitern das größte gewerbliche Haustechnikunternehmen in Österreich und dennoch ein klassischer Familienbetrieb.” Source: RevenueBase Database · checked Sep 17, 2026
8	Ecop Technologies Gmbh	Strong evidence	Wiener Neudorf, AustriaHQ checked Sep 17, 2026	11-50	19 contacts →
	Strong evidence “ecop is a technology company that develops, manufactures and sells novel high-temperature large-scale heat pumps and chillers for industrial use.” Source: RevenueBase Database · checked Sep 17, 2026
9	Ecotherm HOT Water, Steam & Solar Systems	Partial evidence	Hartkirchen, AustriaHQ checked Sep 17, 2026	51-200	15 contacts →
	Partial evidence “ECOTHERM - The leading brand for individual hot water, steam and solar systems for hotels, hospitals and industrial applications.” Source: RevenueBase Database · checked Sep 17, 2026
10	Vogel&noot Austria	Indirect evidence	St. Barbara I. Mzt., AustriaHQ checked Sep 17, 2026	51-200	12 contacts →
	Indirect evidence “DER KOMPLETTANBIETER FÜR KOMFORTSYSTEME „Von der Wasserverteilung bis zur Wärmeabgabe“ klingt kompliziert, ist es aber nicht – vor allem nicht mit VOGEL & NOOT.” Source: RevenueBase Database · checked Sep 17, 2026
11	Enertec Naftz & Partner Gmbh & CO KG	Indirect evidence	Graz, AustriaHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Die Firma ENERTEC ist ein Ingenieurbüro, das den gesamten Bereich der thermischen Energietechnik abdeckt, von der Kältetechnik, der klassischen Haustechnik mit Heizung…” Source: RevenueBase Database · checked Sep 17, 2026
12	Ovum Wärmepumpen	Indirect evidence	Kirchbichl, AustriaHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Alles was das moderne Einfamilienhaus braucht.” Source: RevenueBase Database · checked Sep 17, 2026
13	Easytherm Gmbh	Indirect evidence	Unterwart, AustriaHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “easyTherm ist der Kompetenzführer für "Heizen mit Infrarot" und ein mehrfach prämiertes österreichisches Unternehmen mit seinem Kompetenzzentrum in Unterwart, welches sich auf die…” Source: RevenueBase Database · checked Sep 17, 2026
14	Enercube Gmbh	Indirect evidence	Köstendorf, AustriaHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Wir entwickeln und produzieren vorgefertigte Wärmepumpenmodule für den seriellen Heizungstausch von mehrgeschossigen Wohngebäuden, weg von Öl und Gas.” Source: RevenueBase Database · checked Sep 17, 2026
15	Energy4rent Gmbh	Indirect evidence	Plainfeld, AustriaHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “energy4rent GMBH is a company based out of Gewerbestraße 3, Plainfeld, Salzburg, Austria.” Source: RevenueBase Database · checked Sep 17, 2026
16	WMT Thermosysteme Gmbh	Partial evidence	Kematen, AustriaHQ checked Sep 17, 2026	11-50	4 contacts →
	Partial evidence “As a producer of energy-saving heat and heating technology, WMT develops innovative and economical infrared panels for the private and public sector.” Source: RevenueBase Database · checked Sep 17, 2026
17	Gutmann Energiesysteme Gmbh	Indirect evidence	Innsbruck, AustriaHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “WIR SIND Energiespezialisten.” Source: RevenueBase Database · checked Sep 17, 2026
18	Energy Mode Gmbh	Indirect evidence	Thiersee, AustriaHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “Mit jahrelanger Erfahrung sind wir Ansprechpartner für mobile Energie-Lösungen in den Bereichen Wärme, Kühlung/Kälte, Trocknung, Dampf und Strom in der DACH-Region.” Source: RevenueBase Database · checked Sep 17, 2026
19	Disteco Gmbh	Indirect evidence	Weiler, AustriaHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “Wir entwickeln und produzieren innovative Lösungen für Nah- und Fernwärme.” Source: RevenueBase Database · checked Sep 17, 2026
20	Wundara Gmbh	Indirect evidence	Pölfing-brunn, AustriaHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “Fernheizwerk PÃ¶lfing Brunn” Source: RevenueBase Database · checked Sep 17, 2026
21	Schmid Energy Solutions Gmbh	Indirect evidence	Lieboch, AustriaHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
22	Heatgroup	Partial evidence	Biedermannsdorf, AustriaHQ checked Sep 17, 2026	201-500	2 contacts →
	Partial evidence “HEAT Group is an international group of companies, which has its main focus in the sectors gas distribution, power plants as well as oil and gas exploration.” Source: RevenueBase Database · checked Sep 17, 2026
23	Kelag Energie & Wärme Gmbh	Indirect evidence	Magdalen, AustriaHQ checked Sep 17, 2026	201-500	2 contacts →
	Indirect evidence “KELAG Energie & Wärme GmbH is a company based out of ST.MAGDALENER STRASSE 81, Villach-St.” Source: RevenueBase Database · checked Sep 17, 2026
24	EA Holding Gmbh	Indirect evidence	Obervogau, AustriaHQ checked Sep 17, 2026	51-200	2 contacts →
	Indirect evidence “Willkommen bei EA Holding GmbH - Ihrem Experten für Kälte, Wärme und erneuerbare Energien!” Source: RevenueBase Database · checked Sep 17, 2026
25	Duplex Haustechnik Gmbh	Indirect evidence	Wolkersdorf, AustriaHQ checked Sep 17, 2026	11-50	1 contacts →
	Indirect evidence “Die Experten für eine sparsame, ökologische und zuverlässige Heizung.” Source: RevenueBase Database · checked Sep 17, 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: industrial heat providers. 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 industrial heat providers.
Partial evidence: Its own public description names part of industrial heat providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial heat providers. 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 69 industrial heat providers based in Austria

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Industrial heat providers based in Austria at a glance

As of Sep 17, 2026

27.2%Verified-email coverage

14.7Average contacts per company

11-50Median size (employees)

8.7%Largest-city concentration · Wien

Sep 17, 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 Austria, so it is reported there. Company counts and contact totals on this page are exact for Austria, over 69 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 industrial heat providers, 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 Austria whose own description of what they do matches “industrial heat providers”. 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 industrial heat providers), 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 industrial heat providers, and records with no verified work email. Companies headquartered outside Austria 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, 276 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 17, 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 industrial heat providers, 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 industrial heat providers are there based in Austria?

RevenueBase identified 69 industrial heat providers headquartered in Austria 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?

Ebner Industrieofenbau, headquartered in Leonding, tops this list with the largest team on record.

Which city has the most industrial heat providers?

Wien leads with 6 headquartered companies, followed by Amstetten (2) and Graz (2).

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 276 verified decision-maker contacts tracked across these 69 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 17, 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.