Company lists · Data refreshed November 2026

Top 25 Hvac system optimization firms based in Austria

RevenueBase identified 64 company matches for hvac system optimization firms associated with Austria as of November 2026 and tracks 423 professional contacts across them, including 143 with verified work emails. Vienna is the largest hub.

This list covers company matches for hvac system optimization firms associated with Austria, 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 November 6, 2026.

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 Nov 6, 2026 How this list was built
64Companies
423Contacts tracked
143Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest hvac system optimization firms based in Austria

Ranked by team size
Top 25 of 64 company matches for hvac system optimization firms based in Austria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchVienna, AustriaHQ recorded Nov 6, 2026201-50099 contacts →

Exact match

“Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchRum, AustriaHQ recorded Nov 6, 2026201-50070 contacts →

Exact match

“Techem ist einer der führenden Servicepartner der Immobilienwirtschaft.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchVienna, AustriaHQ recorded Nov 6, 2026201-50034 contacts →

Exact match

“Die 1873 in Wien eröffnete J.L.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchVienna, AustriaHQ recorded Nov 6, 202651-20027 contacts →

Exact match

“Dank innovativer Technik bieten unsere Gebäudemanagementlösungen den Nutzern Komfort, Funktionalität und Betriebssicherheit bei kosteneffizientem Unterhalt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGraz, AustriaHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Die Firma ENERTEC ist ein Ingenieurbüro, das den gesamten Bereich der thermischen Energietechnik abdeckt, von der Kältetechnik, der klassischen Haustechnik mit Heizung…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSt. Pölten, AustriaHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Willkommen bei den KWI-Ingenieuren!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchVienna, AustriaHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Unser Ansatz basiert auf einer ökologisch und ökonomisch effizienten TGA Planung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchFeldbach, AustriaHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“Die KGT Gebäudetechnik GmbH ist eines der führenden österreichischen Unternehmen in den Bereichen Heizung, Lüftung, Sanitär, Klima, Elektro, Sprinkleranlagen und…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchVöcklabruck, AustriaHQ recorded Nov 6, 202611-509 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchGraz, AustriaHQ recorded Nov 6, 202611-506 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchVienna, AustriaHQ recorded Nov 6, 20261-106 contacts →

Exact match

“A Short History Originally established in 2011 as a joint venture between denkstatt GmbH and ENERTEC - Naftz & Partner GmbH & Co KG, the company known as denkstatt & enertec (d&e…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSt. Pölten, AustriaHQ recorded Nov 6, 202651-2005 contacts →

Exact match

“Ratzenberger Haustechnik-Installation GmbH - RATZENBERGER HAUSTECHNIK als ausFÜHRENDES Unternehmen im HKLS Bereich, schafft mit fachkundiger Beratung, Planung und Montage die…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchVolders, AustriaHQ recorded Nov 6, 20261-104 contacts →

Exact match

“standard beschreibung”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchVienna, AustriaHQ recorded Nov 6, 2026n/a4 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSalzburg, AustriaHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Planung im Bereich Heizung Klima Lüftung Lüftung MSR”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchGotzendorf An Der Leitha, AustriaHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBregenz, AustriaHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSt. Pölten, AustriaHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Seit mehr als 70 Jahren Ihr Kälte- und Klimaprofi.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchDornbirn, AustriaHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Wir beschäftigen uns bereits seit über zwei Jahrzehnten mit der energieoptimierten Gebäude- und Haustechnikplanung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchGraz, AustriaHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Klimaanlage aller Hersteller Service von Klimaanlagen, Reparatur und Wartung Klima Graz, Klimaanlagen Niederösterreich, Klimaanlagen in Wien, Sanyo Klimaanlagen, Klimageräte…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBrunn Am Gebirge, AustriaHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Willkommen bei Plumberama in Brunn am Gebirge!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchGaweinstal, AustriaHQ recorded Nov 6, 202611-501 contacts →

Exact match

“Wir sind die Spezialisten in Niederösterreich und Wien für intelligente Klimasysteme zum Kühlen und Heizen im Alt- und Neubau.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchGrafenschachen, AustriaHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Die Feiner Kälte GmbH bietet energetisch sinnvolle und nachhaltige Gesamtkonzepte für Heiz- und Kühlsysteme.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLudmannsdorf, AustriaHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Our company is specialized in the field of industrial energy systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchVienna, AustriaHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Die Firma ARKTIS Kälte -und Klimatechnik GmbH ist ein junges aufstrebendes Unternehmen, welches im Jahr 1992 ins Leben gerufen wurde.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 64 hvac system optimization firms based in Austria

See the full list, filter by size, metro and specialty, and access 143 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Hvac system optimization firms based in Austria at a glance

As of Nov 6, 2026
33.8%Verified-email coverage
6.6Average contacts per company
1-10Median size (employees)
20.3%Largest-city concentration · Vienna
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
33
11-50
17
51-200
6
201-500
3
1,001-5,000
1

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 64 companies.

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.
What qualifies
Company records associated with Austria whose business descriptions match “hvac system optimization firms” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 143 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 November 6, 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.

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 “hvac system optimization firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hvac system optimization firms are there based in Austria?

RevenueBase identified 64 company matches for hvac system optimization firms associated with Austria as of November 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?

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

Which city has the most hvac system optimization firms?

Vienna leads with 13 company records, followed by Graz (4) and Gaweinstal (3).

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 143 professional contacts with verified work emails tracked across these 64 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 November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 64 hvac system optimization firms based in Austria. 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.