Company lists · Data refreshed September 2026

Top 21 Thermal design consulting firms based in Austria

RevenueBase identified 34 thermal design consulting firms headquartered in Austria as of September 2026 and tracks 115 professional contacts across them, including 52 with verified work emails. Vienna is the largest hub.

This list covers thermal design consulting firms 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 29, 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 29, 2026 86% judged on-target in blind review
34Companies
115Contacts tracked
52Verified emails
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The 21 largest thermal design consulting firms based in Austria

Ranked by team size
Top 21 of 34 thermal design consulting firms based in Austria, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to thermal design consulting firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceLeoben, AustriaHQ checked Sep 29, 202611-5022 contacts →

Partial evidence

“Mettop GmbH, founded in 2005, is an independent Austrian engineering company, specialised in the design, optimisation, and engineering of technologies for metallurgical processes.”

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidenceGraz, AustriaHQ checked Sep 29, 202611-5010 contacts →

Partial 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 29, 2026
3Indirect evidencePinggau, AustriaHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

“Die Ringhofer & Partner GmbH mit Sitz in Pinggau in der Steiermark ist eines der führenden Planungsbüros im Bereich Gebäudetechnik, Bau- und Energieplanung österreichweit.”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceVöcklabruck, AustriaHQ checked Sep 29, 202611-508 contacts →

Indirect evidence

“SYNERGIE DES GANZEN Alle Gewerke der technischen Gebäudeausrüstung Wir als Ingenieurbüro bieten Gebäudetechnische Gesamtlösungen aus den Bereichen Heizungstechnik…”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceKundl, AustriaHQ checked Sep 29, 202611-506 contacts →

Indirect evidence

“Wir beraten Sie gerne bei Ihrer Planung für die komplette Energie- Gebäude- und Elektrotechnik.”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceGraz, AustriaHQ checked Sep 29, 202611-506 contacts →

Indirect evidence

“Mit Innovationskraft zur Gebäudetechnik der Zukunft Das Ingenieurbüro Lang steht seit 1986 für Haustechnikplanung mit Fokus auf Kälte- und Klimatechnik – heute bereits in zweiter…”

Source: RevenueBase Database · checked Sep 29, 2026
7Partial evidenceStreithofen, AustriaHQ checked Sep 29, 20261-105 contacts →

Partial evidence

“Special-purpose solutions and product design for mechanical engineering, refrigeration engineering and air-conditioning technologies”

Source: RevenueBase Database · checked Sep 29, 2026
8Partial evidenceNeckenmarkt, AustriaHQ checked Sep 29, 20261-104 contacts →

Partial evidence

“Ingenieurbüro für: thermische Energietechnik & industrielle Energieeffizienz”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceInnsbruck, AustriaHQ checked Sep 29, 202611-503 contacts →

Indirect evidence

“Das Ingenieurbüro Kainz ist Ihr kompetenter Partner in allen Bereichen der Technischen Ausrüstung.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceBregenz, AustriaHQ checked Sep 29, 202611-503 contacts →

Indirect evidence

“Vorarlberg, Bregenz, Elektrotechnik, Kältetechnik, Elektromaschinenbau, Ladenbau, Ingenieurbüro”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceObernberg Am Inn, AustriaHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“Die RG engineering GmbH & Co.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceSchäffern, AustriaHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“Ingenieurbüro für technische Gebäudeausrüstung”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceLinz, AustriaHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“Das Unternehmen wurde nach 7-jähriger Planungspraxis im April 1994 gegründet.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceKirchschlag Bei Linz, AustriaHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“Unsere Fachkompetenz umfasst die Haus- und Gebäudetechnik inklusive der Elektrotechnik und Energie- und Brandschutzkonzepte.”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceKlagenfurt, AustriaHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“Ingenieurbüro für - Maschinenbau - Elektrotechnik - Wirtschaftsingenieurwesen”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceGeretsberg, AustriaHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“Novel Energy Solutions GmbH ist ein geprüftes Ingenieurbüro und entwickelt individuelle wirtschaftliche und nachhaltige Lösungen für industrielle Energiesysteme.”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceLamprechtshausen, AustriaHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceMünchendorf, AustriaHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Als Fachplaner für Kältetechnik bieten wir Ihnen folgende Leistungen- Planung, Berechnung und Konzipierung anspruchsvoller Anlagen und Projekte im Bereich der gewerblichen und…”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceGmunden, AustriaHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Beratung - Planung - Ausschreibung - Fachbauaufsicht für HKLS - Gebäudetechnik”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceBregenz, AustriaHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidenceVienna, AustriaHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Als erfahrenes Planungsbüro für Elektrotechnik, Heizung, Klima, Lüftung & Sanitär übernehmen wir Projekte aller Art im Inland und Ausland für verschiedenste Unternehmen.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 21 of 34 thermal design consulting firms based in Austria

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Thermal design consulting firms based in Austria at a glance

As of Sep 29, 2026
45.2%Verified-email coverage
3.4Average contacts per company
1-10Median size (employees)
14.7%Largest-city concentration · Vienna
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
20
11-50
14

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 34 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 thermal design consulting firms, 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 “thermal design consulting firms”. 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 thermal design consulting firms), 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 thermal design consulting firms, 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, 52 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 29, 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 thermal design consulting firms, 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 thermal design consulting firms are there based in Austria?

RevenueBase identified 34 thermal design consulting firms 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?

Mettop, headquartered in Leoben, tops this list with the largest team on record.

Which city has the most thermal design consulting firms?

Vienna leads with 5 headquartered companies, followed by Graz (3) and Bregenz (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 52 verified decision-maker contacts tracked across these 34 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 29, 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.