Company lists · Data refreshed September 2026
Top 25 Energy efficient hvac contractors based in Austria
RevenueBase identified 156 company matches for energy efficient hvac contractors associated with Austria as of September 2026 and tracks 682 professional contacts across them, including 178 with verified work emails. Vienna is the largest hub.
This list covers company matches for energy efficient hvac contractors 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 September 16, 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.
The 25 largest energy efficient hvac contractors based in Austria
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 87 contacts → | ||||
Exact match “Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 2 | 31 contacts → | ||||
Exact match “KUSTEC is your experienced and competent partner for all professional cooling and heating queries.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 3 | 29 contacts → | ||||
Exact match “Die 1873 in Wien eröffnete J.L.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 4 | 22 contacts → | ||||
Exact match “Unsere Firmengruppe ist mit 14 Standorten und über 800 Mitarbeitern das größte gewerbliche Haustechnikunternehmen in Österreich und dennoch ein klassischer Familienbetrieb.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 5 | 19 contacts → | ||||
Exact match “BERATUNG - PLANUNG - FACHBAUAUFSICHT FÜR HEIZUNGS, KLIMA, LÜFTUNGS, SANITÄR- UND ENERGIETECHNISCHE ANLAGEN STANDORTE VILLACH | WIEN | BAD VÖSLAU Für den Inhalt verantwortlich…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 6 | 13 contacts → | ||||
Exact match “Hörburger: Partner für hochwertige Energietechnik mit Zukunft Hörburger gilt als einer der regional führenden Experten für hochwertige Gesamtlösungen in den Bereichen Sanitär- und…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 7 | 13 contacts → | ||||
Exact match “Wir machen Klima seit über 50 Jahren.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 8 | 11 contacts → | ||||
Exact match “PWE System GmbH is a company based out of Franz-zola-straße 5, Wels, Oberösterreich, Austria.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 9 | 11 contacts → | ||||
Exact match “TGS wurde 2005 gegründet.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 10 | 10 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 11 | 8 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 12 | 8 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 13 | 7 contacts → | ||||
Exact match “Wir beraten, planen, installieren / montieren, reparieren, servicieren u.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 14 | 7 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 15 | 6 contacts → | ||||
Exact match “Firma "Small" in Linz und Wien ist ein in der Gebäudetechnik-Branche tätiges Installationsunternehmen für Heizung, Klima, Lüftung, Sanitär und Wartungsarbeiten.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 16 | 6 contacts → | ||||
Exact match “Als international tätiger burgenländischer Familienbetrieb sind wir seit 1972 auf die Planung, Fertigung, Installation und Wartung von Klima-Lüftungsanlagen, sowie…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 17 | 6 contacts → | ||||
Exact match “Als Komplettanbieter liefern wir unseren Kunden die gesamte Gebäudetechnik aus einer Hand – also Elektro, Sicherheit, Steuerungen, Sanitär, Heizung und Lüftung.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 18 | 6 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 19 | 5 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 · Sep 16, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “Die Klima Michi GmbH ist ein Kälte- & Klimatechnik Unternehmen in Villach.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “Seit mehr als 70 Jahren Ihr Kälte- und Klimaprofi.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 23 | 4 contacts → | ||||
Exact match “wir installieren generationen.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 24 | 4 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 25 | 3 contacts → | ||||
Exact match “M-TEC setzt sich seit 5 Jahrzehnten für die effiziente Nutzung erneuerbarer Energie ein.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “energy efficient hvac contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 156 energy efficient hvac contractors based in Austria
See the full list, filter by size, metro and specialty, and access 178 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Energy efficient hvac contractors based in Austria at a glance
As of Sep 16, 2026Companies by employee count
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 156 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 “energy efficient hvac contractors” 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 178 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 September 16, 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 “energy efficient hvac contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many energy efficient hvac contractors are there based in Austria?
RevenueBase identified 156 company matches for energy efficient hvac contractors associated with Austria as of September 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 energy efficient hvac contractors?
Vienna leads with 21 company records, followed by Graz (10) and Linz (6).
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 178 professional contacts with verified work emails tracked across these 156 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 September 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 156 energy efficient hvac contractors based in Austria. Start with a free account, no credit card.
Download this list →Related lists
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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 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.
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Company intelligence · public preview
Top 25 energy efficient hvac contractors based in Austria
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 156 matching company records for energy efficient hvac contractors based in Austria, with 682 tracked contacts and 178 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 energy efficient hvac contractors based in Austria
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Vaillant Österreichvaillant.at HQ: Vienna, AustriaReported employees: 201-500 | Vienna, Austria | 201-500 | Exact match | 87 contacts → |
“Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Kustec Kälte- UND Systemtechnik Gmbhkustec.atHQ: Freundorf, AustriaReported employees: 51-200 | Freundorf, Austria | 51-200 | Exact match | 31 contacts → |
“KUSTEC is your experienced and competent partner for all professional cooling and heating queries.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Bacon Babakbacon.atHQ: Vienna, AustriaReported employees: 201-500 | Vienna, Austria | 201-500 | Exact match | 29 contacts → |
“Die 1873 in Wien eröffnete J.L.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Markus Stolz Gmbh & CO KGstolz.atHQ: Bludenz, AustriaReported employees: 501-1,000 | Bludenz, Austria | 501-1,000 | Exact match | 22 contacts → |
“Unsere Firmengruppe ist mit 14 Standorten und über 800 Mitarbeitern das größte gewerbliche Haustechnikunternehmen in Österreich und dennoch ein klassischer Familienbetrieb.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Ingenieurbüro Lakata Gmbhlakata.at HQ: Villach, AustriaReported employees: 11-50 | Villach, Austria | 11-50 | Exact match | 19 contacts → |
“BERATUNG - PLANUNG - FACHBAUAUFSICHT FÜR HEIZUNGS, KLIMA, LÜFTUNGS, SANITÄR- UND ENERGIETECHNISCHE ANLAGEN STANDORTE VILLACH | WIEN | BAD VÖSLAU Für den Inhalt verantwortlich…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Hörburger Gmbh & CO KGhoerburger.atHQ: Altach, AustriaReported employees: 51-200 | Altach, Austria | 51-200 | Exact match | 13 contacts → |
“Hörburger: Partner für hochwertige Energietechnik mit Zukunft Hörburger gilt als einer der regional führenden Experten für hochwertige Gesamtlösungen in den Bereichen Sanitär- und…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | TVGtvg.at HQ: 1230 Wien, AustriaReported employees: 51-200 | 1230 Wien, Austria | 51-200 | Exact match | 13 contacts → |
“Wir machen Klima seit über 50 Jahren.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  PWE System Gmbhpwe-system.atHQ: Wels, AustriaReported employees: 1-10 | Wels, Austria | 1-10 | Exact match | 11 contacts → |
“PWE System GmbH is a company based out of Franz-zola-straße 5, Wels, Oberösterreich, Austria.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  TGS Technischer Gebäude Service Gmbhtgs.co.atHQ: Altach, AustriaReported employees: 51-200 | Altach, Austria | 51-200 | Exact match | 11 contacts → |
“TGS wurde 2005 gegründet.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Enertec Naftz & Partner Gmbh & CO KGenertec.atHQ: Graz, AustriaReported employees: 11-50 | Graz, Austria | 11-50 | Exact match | 10 contacts → |
“Die Firma ENERTEC ist ein Ingenieurbüro, das den gesamten Bereich der thermischen Energietechnik abdeckt, von der Kältetechnik, der klassischen Haustechnik mit Heizung…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Energie Technik Ing. Mario Malli Planungs-Gmbhenergie-technik.at HQ: Vöcklabruck, AustriaReported employees: 11-50 | Vöcklabruck, Austria | 11-50 | Exact match | 8 contacts → |
“SYNERGIE DES GANZEN Alle Gewerke der technischen Gebäudeausrüstung Wir als Ingenieurbüro bieten Gebäudetechnische Gesamtlösungen aus den Bereichen Heizungstechnik…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  KGT Gebäudetechnik Gmbhkgt.atHQ: Feldbach, AustriaReported employees: 51-200 | Feldbach, Austria | 51-200 | Exact match | 8 contacts → |
“Die KGT Gebäudetechnik GmbH ist eines der führenden österreichischen Unternehmen in den Bereichen Heizung, Lüftung, Sanitär, Klima, Elektro, Sprinkleranlagen und…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  GEG Elektro UND Gebäudetechnik Gmbhgeg.co.atHQ: Gmunden, AustriaReported employees: 51-200 | Gmunden, Austria | 51-200 | Exact match | 7 contacts → |
“Wir beraten, planen, installieren / montieren, reparieren, servicieren u.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Pöttinger Installations Gmbhpoettinger-installationen.atHQ: Grieskirchen, AustriaReported employees: 51-200 | Grieskirchen, Austria | 51-200 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | HQ: Linz, AustriaReported employees: 51-200 | Linz, Austria | 51-200 | Exact match | 6 contacts → |
“Firma "Small" in Linz und Wien ist ein in der Gebäudetechnik-Branche tätiges Installationsunternehmen für Heizung, Klima, Lüftung, Sanitär und Wartungsarbeiten.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Radel & Hahn Klimatechnik Gesmbhradel-hahn.at HQ: Mattersburg, AustriaReported employees: 11-50 | Mattersburg, Austria | 11-50 | Exact match | 6 contacts → |
“Als international tätiger burgenländischer Familienbetrieb sind wir seit 1972 auf die Planung, Fertigung, Installation und Wartung von Klima-Lüftungsanlagen, sowie…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  E.Denzel Gmbhe-denzel.atHQ: Graz, AustriaReported employees: 51-200 | Graz, Austria | 51-200 | Exact match | 6 contacts → |
“Als Komplettanbieter liefern wir unseren Kunden die gesamte Gebäudetechnik aus einer Hand – also Elektro, Sicherheit, Steuerungen, Sanitär, Heizung und Lüftung.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Ingenieurbüro Lang Gmbhiblang.atHQ: Graz, AustriaReported employees: 11-50 | Graz, Austria | 11-50 | Exact match | 6 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Ratzenberger Haustechnik-Installations Gmbhratzenberger.co.atHQ: St. Pölten, AustriaReported employees: 51-200 | St. Pölten, Austria | 51-200 | Exact match | 5 contacts → |
“Ratzenberger Haustechnik-Installation GmbH - RATZENBERGER HAUSTECHNIK als ausFÜHRENDES Unternehmen im HKLS Bereich, schafft mit fachkundiger Beratung, Planung und Montage die…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Dipl.Ing. Anton Hofstätter Gesellschaft M.B.Hheiz-hofstaetter.at HQ: Graz, AustriaReported employees: 1-10 | Graz, Austria | 1-10 | Exact match | 5 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 |  Klima Michi Gmbhklima-michi.atHQ: St. Niklas An Der Drau, AustriaReported employees: 11-50 | St. Niklas An Der Drau, Austria | 11-50 | Exact match | 4 contacts → |
“Die Klima Michi GmbH ist ein Kälte- & Klimatechnik Unternehmen in Villach.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  K. Österreicher Gmbhk-oesterreicher.atHQ: St. Pölten, AustriaReported employees: 11-50 | St. Pölten, Austria | 11-50 | Exact match | 4 contacts → |
“Seit mehr als 70 Jahren Ihr Kälte- und Klimaprofi.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Scherübel's Söhne Gmbhscheruebel.at HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 4 contacts → |
“wir installieren generationen.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Lepuschitz Kältetechniklepuschitz.at HQ: Villach, AustriaReported employees: 1-10 | Villach, Austria | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 | M-Tec Energie.Innovativ Gmbhm-tec.at HQ: Arnreit, AustriaReported employees: 51-200 | Arnreit, Austria | 51-200 | Exact match | 3 contacts → |
“M-TEC setzt sich seit 5 Jahrzehnten für die effiziente Nutzung erneuerbarer Energie ein.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 156 company matches
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Energy efficient hvac contractors: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
150 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 156 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for energy efficient hvac contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many energy efficient hvac contractors did RevenueBase find based in Austria?
The saved snapshot records 156 matching company records, 682 tracked contacts and 178 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Energy efficient hvac contractors by geography
- Energy efficient hvac contractors based in Brisbane, Australia
- Energy efficient hvac contractors based in Melbourne, Australia
- Energy efficient hvac contractors based in Sydney, Australia
- Energy efficient hvac contractors based in Belo Horizonte, Brazil
- Energy efficient hvac contractors based in Rio De Janeiro, Brazil
- Energy efficient hvac contractors based in Sao Paulo, Brazil
- Energy efficient hvac contractors based in Brampton, Canada
- Energy efficient hvac contractors based in Burnaby, Canada
- Energy efficient hvac contractors based in Calgary, Canada
- Energy efficient hvac contractors based in Edmonton, Canada
- Energy efficient hvac contractors based in Laval, Canada
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Cite this list
RevenueBase Data Team. Top 25 energy efficient hvac contractors based in Austria. Snapshot: September 16, 2026. https://revenuebase.ai/companies/energy-efficient-hvac-contractors/austria.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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Company intelligence · public preview
Top 25 energy efficient hvac contractors based in Austria
RevenueBase records 156 matching company records for energy efficient hvac contractors based in Austria, with 682 tracked contacts and 178 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 energy efficient hvac contractors based in Austria
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Vaillant Österreichvaillant.at HQ: Vienna, AustriaReported employees: 201-500 | Vienna, Austria | 201-500 | Exact match | 87 contacts → |
“Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Kustec Kälte- UND Systemtechnik Gmbhkustec.at HQ: Freundorf, AustriaReported employees: 51-200 | Freundorf, Austria | 51-200 | Exact match | 31 contacts → |
“KUSTEC is your experienced and competent partner for all professional cooling and heating queries.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Bacon Babakbacon.at HQ: Vienna, AustriaReported employees: 201-500 | Vienna, Austria | 201-500 | Exact match | 29 contacts → |
“Die 1873 in Wien eröffnete J.L.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Markus Stolz Gmbh & CO KGstolz.at HQ: Bludenz, AustriaReported employees: 501-1,000 | Bludenz, Austria | 501-1,000 | Exact match | 22 contacts → |
“Unsere Firmengruppe ist mit 14 Standorten und über 800 Mitarbeitern das größte gewerbliche Haustechnikunternehmen in Österreich und dennoch ein klassischer Familienbetrieb.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Ingenieurbüro Lakata Gmbhlakata.at HQ: Villach, AustriaReported employees: 11-50 | Villach, Austria | 11-50 | Exact match | 19 contacts → |
“BERATUNG - PLANUNG - FACHBAUAUFSICHT FÜR HEIZUNGS, KLIMA, LÜFTUNGS, SANITÄR- UND ENERGIETECHNISCHE ANLAGEN STANDORTE VILLACH | WIEN | BAD VÖSLAU Für den Inhalt verantwortlich…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Hörburger Gmbh & CO KGhoerburger.at HQ: Altach, AustriaReported employees: 51-200 | Altach, Austria | 51-200 | Exact match | 13 contacts → |
“Hörburger: Partner für hochwertige Energietechnik mit Zukunft Hörburger gilt als einer der regional führenden Experten für hochwertige Gesamtlösungen in den Bereichen Sanitär- und…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | TVGtvg.at HQ: 1230 Wien, AustriaReported employees: 51-200 | 1230 Wien, Austria | 51-200 | Exact match | 13 contacts → |
“Wir machen Klima seit über 50 Jahren.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | PWE System Gmbhpwe-system.at HQ: Wels, AustriaReported employees: 1-10 | Wels, Austria | 1-10 | Exact match | 11 contacts → |
“PWE System GmbH is a company based out of Franz-zola-straße 5, Wels, Oberösterreich, Austria.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | TGS Technischer Gebäude Service Gmbhtgs.co.at HQ: Altach, AustriaReported employees: 51-200 | Altach, Austria | 51-200 | Exact match | 11 contacts → |
“TGS wurde 2005 gegründet.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Enertec Naftz & Partner Gmbh & CO KGenertec.at HQ: Graz, AustriaReported employees: 11-50 | Graz, Austria | 11-50 | Exact match | 10 contacts → |
“Die Firma ENERTEC ist ein Ingenieurbüro, das den gesamten Bereich der thermischen Energietechnik abdeckt, von der Kältetechnik, der klassischen Haustechnik mit Heizung…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Energie Technik Ing. Mario Malli Planungs-Gmbhenergie-technik.at HQ: Vöcklabruck, AustriaReported employees: 11-50 | Vöcklabruck, Austria | 11-50 | Exact match | 8 contacts → |
“SYNERGIE DES GANZEN Alle Gewerke der technischen Gebäudeausrüstung Wir als Ingenieurbüro bieten Gebäudetechnische Gesamtlösungen aus den Bereichen Heizungstechnik…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | KGT Gebäudetechnik Gmbhkgt.at HQ: Feldbach, AustriaReported employees: 51-200 | Feldbach, Austria | 51-200 | Exact match | 8 contacts → |
“Die KGT Gebäudetechnik GmbH ist eines der führenden österreichischen Unternehmen in den Bereichen Heizung, Lüftung, Sanitär, Klima, Elektro, Sprinkleranlagen und…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | GEG Elektro UND Gebäudetechnik Gmbhgeg.co.at HQ: Gmunden, AustriaReported employees: 51-200 | Gmunden, Austria | 51-200 | Exact match | 7 contacts → |
“Wir beraten, planen, installieren / montieren, reparieren, servicieren u.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Pöttinger Installations Gmbhpoettinger-installationen.at HQ: Grieskirchen, AustriaReported employees: 51-200 | Grieskirchen, Austria | 51-200 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | HQ: Linz, AustriaReported employees: 51-200 | Linz, Austria | 51-200 | Exact match | 6 contacts → |
“Firma "Small" in Linz und Wien ist ein in der Gebäudetechnik-Branche tätiges Installationsunternehmen für Heizung, Klima, Lüftung, Sanitär und Wartungsarbeiten.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Radel & Hahn Klimatechnik Gesmbhradel-hahn.at HQ: Mattersburg, AustriaReported employees: 11-50 | Mattersburg, Austria | 11-50 | Exact match | 6 contacts → |
“Als international tätiger burgenländischer Familienbetrieb sind wir seit 1972 auf die Planung, Fertigung, Installation und Wartung von Klima-Lüftungsanlagen, sowie…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | E.Denzel Gmbhe-denzel.at HQ: Graz, AustriaReported employees: 51-200 | Graz, Austria | 51-200 | Exact match | 6 contacts → |
“Als Komplettanbieter liefern wir unseren Kunden die gesamte Gebäudetechnik aus einer Hand – also Elektro, Sicherheit, Steuerungen, Sanitär, Heizung und Lüftung.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ingenieurbüro Lang Gmbhiblang.at HQ: Graz, AustriaReported employees: 11-50 | Graz, Austria | 11-50 | Exact match | 6 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ratzenberger Haustechnik-Installations Gmbhratzenberger.co.at HQ: St. Pölten, AustriaReported employees: 51-200 | St. Pölten, Austria | 51-200 | Exact match | 5 contacts → |
“Ratzenberger Haustechnik-Installation GmbH - RATZENBERGER HAUSTECHNIK als ausFÜHRENDES Unternehmen im HKLS Bereich, schafft mit fachkundiger Beratung, Planung und Montage die…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Dipl.Ing. Anton Hofstätter Gesellschaft M.B.Hheiz-hofstaetter.at HQ: Graz, AustriaReported employees: 1-10 | Graz, Austria | 1-10 | Exact match | 5 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Klima Michi Gmbhklima-michi.at HQ: St. Niklas An Der Drau, AustriaReported employees: 11-50 | St. Niklas An Der Drau, Austria | 11-50 | Exact match | 4 contacts → |
“Die Klima Michi GmbH ist ein Kälte- & Klimatechnik Unternehmen in Villach.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | K. Österreicher Gmbhk-oesterreicher.at HQ: St. Pölten, AustriaReported employees: 11-50 | St. Pölten, Austria | 11-50 | Exact match | 4 contacts → |
“Seit mehr als 70 Jahren Ihr Kälte- und Klimaprofi.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Scherübel's Söhne Gmbhscheruebel.at HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 4 contacts → |
“wir installieren generationen.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Lepuschitz Kältetechniklepuschitz.at HQ: Villach, AustriaReported employees: 1-10 | Villach, Austria | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 | M-Tec Energie.Innovativ Gmbhm-tec.at HQ: Arnreit, AustriaReported employees: 51-200 | Arnreit, Austria | 51-200 | Exact match | 3 contacts → |
“M-TEC setzt sich seit 5 Jahrzehnten für die effiziente Nutzung erneuerbarer Energie ein.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 156 company matches
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Energy efficient hvac contractors: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
150 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 156 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for energy efficient hvac contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many energy efficient hvac contractors did RevenueBase find based in Austria?
The saved snapshot records 156 matching company records, 682 tracked contacts and 178 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 energy efficient hvac contractors based in Austria. Snapshot: September 16, 2026. https://revenuebase.ai/companies/energy-efficient-hvac-contractors/austria.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Energy efficient hvac contractors based in Brisbane, Australia
- Energy efficient hvac contractors based in Melbourne, Australia
- Energy efficient hvac contractors based in Sydney, Australia
- Energy efficient hvac contractors based in Belo Horizonte, Brazil
- Energy efficient hvac contractors based in Rio De Janeiro, Brazil
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