Company lists · Data refreshed September 2026

Top 25 Hvac consulting firms based in Switzerland

Name: Hvac consulting firms based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 572 companies tracked

RevenueBase identified 572 hvac consulting firms headquartered in Switzerland as of September 2026 and tracks 3,309 professional contacts across them, including 1,208 with verified work emails. Zurich is the largest hub.

This list covers hvac consulting firms headquartered in Switzerland, 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 28, 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 28, 2026 86% judged on-target in blind review

572Companies

3,309Contacts tracked

1,208Verified emails

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The 25 largest hvac consulting firms based in Switzerland

Ranked by team size

Top 25 of 572 hvac consulting firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hvac 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Hoval Schweiz	Indirect evidence	Feldmeilen, SwitzerlandHQ checked Sep 28, 2026	201-500	187 contacts →
	Indirect evidence “Hoval – Verantwortung für Energie und Umwelt Die Marke Hoval zählt international zu den führenden Unternehmen für Heiz- und Raumklimalösungen.” Source: RevenueBase Database · checked Sep 28, 2026
2	Koster AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 28, 2026	201-500	73 contacts →
	Indirect evidence “Gebäudetechniker” Source: RevenueBase Database · checked Sep 28, 2026
3	RMB Engineering AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	51-200	62 contacts →
	Indirect evidence “Als führendes Ingenieur- und Planungsunternehmen in den Bereichen Gebäude, Energie- und Umwelttechnik realisiert die RMB Engineering AG massgeschneiderte Lösungen für…” Source: RevenueBase Database · checked Sep 28, 2026
4	Weinmann-Energies SA	Indirect evidence	Echallens, SwitzerlandHQ checked Sep 28, 2026	51-200	47 contacts →
	Indirect evidence “Weinmann-Energies est un bureau d’ingénieurs-conseils EPFL-SIA-SuisseIng.” Source: RevenueBase Database · checked Sep 28, 2026
5	Lauber Iwisa AG	Indirect evidence	Naters, SwitzerlandHQ checked Sep 28, 2026	201-500	47 contacts →
	Indirect evidence “Energie- & Gebäudetechnik” Source: RevenueBase Database · checked Sep 28, 2026
6	Hunziker Partner AG	Indirect evidence	Winterthur, SwitzerlandHQ checked Sep 28, 2026	51-200	43 contacts →
	Indirect evidence “Als führendes und mehrfach ausgezeichnetes Unternehmen der Haustechnik mit rund 100 Mitarbeitenden umfasst unsere Tätigkeit die Planung, Realisierung und Service von Heiz, Luft…” Source: RevenueBase Database · checked Sep 28, 2026
7	Aicher DE Martin Zweng AG	Indirect evidence	6006 Luzern, SwitzerlandHQ checked Sep 28, 2026	51-200	41 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
8	Riggenbach AG	Indirect evidence	Olten, SwitzerlandHQ checked Sep 28, 2026	51-200	40 contacts →
	Indirect evidence “We plan, build and maintain ventilation and air conditioning systems for industry, commerce and public buildings throughout Switzerland.” Source: RevenueBase Database · checked Sep 28, 2026
9	Kalt Halbeisen Ingenieurbüro AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	51-200	32 contacts →
	Indirect evidence “Wir sind ein erfolgreiches Ingenieur, Planungs- und Beratungsunternehmen im Bereich der Energie- und Gebäudetechnik.” Source: RevenueBase Database · checked Sep 28, 2026
10	dieklimamacher.ch	Indirect evidence	Arbon, SwitzerlandHQ checked Sep 28, 2026	51-200	31 contacts →
	Indirect evidence “Die Klimamacher AG stehen für Heizen, Lüften, Kühlen, sanitäre Installationen, Gebäude- und Prozesstechnik im vollumfassenden Sinne.” Source: RevenueBase Database · checked Sep 28, 2026
11	Services Plus Energies SA	Indirect evidence	Bernex, SwitzerlandHQ checked Sep 28, 2026	51-200	31 contacts →
	Indirect evidence “Depuis 15 ans à votre service, Services Plus Energies est une entreprise spécialisée en Chauffage, Ventilation et Climatisation.” Source: RevenueBase Database · checked Sep 28, 2026
12	Waldhauser Hermann AG	Indirect evidence	Münchenstein, SwitzerlandHQ checked Sep 28, 2026	51-200	30 contacts →
	Indirect evidence “Haustechnik ist eine komplexe Angelegenheit und steht in direktem Zusammenhang mit Benutzerzufriedenheit, Betriebssicherheit, Erstellungs- und Betriebskosten sowie Umweltbelastung.” Source: RevenueBase Database · checked Sep 28, 2026
13	GUT AG Gebäudetechnik	Indirect evidence	Schenkon, SwitzerlandHQ checked Sep 28, 2026	51-200	30 contacts →
	Indirect evidence “Das machen wir Als eines der grössten Gebäudetechnik-Unternehmen der Zentralschweiz sorgen wir in den Bereichen Heizung, Lüftung, Klima und Sanitär für das Wohlbefinden unserer…” Source: RevenueBase Database · checked Sep 28, 2026
14	Energa SA	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Situé à Yverdon-les-Bains et à Lausanne, ENERGA SA est un bureau d’ingénieurs-conseils EPFL-SIA actif sur l’ensemble de la Suisse romande.” Source: RevenueBase Database · checked Sep 28, 2026
15	AZ Ingénieurs SA	Indirect evidence	Lausanne 10, SwitzerlandHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “La marque az ingénieurs regroupe des sociétés privées réunissant des ingénieurs-conseils dans les domaines de l'énergie, de la sécurité et des installations techniques pour le…” Source: RevenueBase Database · checked Sep 28, 2026
16	Tech-Insta SA	Indirect evidence	Torricella-taverne, SwitzerlandHQ checked Sep 28, 2026	51-200	27 contacts →
	Indirect evidence “La Tech-Insta nasce a fine 1995 con un’operazione di “management buy-out” dalla Filiale di Lugano del gruppo tecnologico Sulzer, continuandone l’attività nel settore…” Source: RevenueBase Database · checked Sep 28, 2026
17	Muller Energies	Indirect evidence	Meinier, SwitzerlandHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “Muller Energies SA est votre spécialiste dans la maintenance et l’optimisation énergétique de vos installations de chauffage, ventilation, et climatisation.” Source: RevenueBase Database · checked Sep 28, 2026
18	Winkenbach SA	Indirect evidence	La Chaux-de-fonds, SwitzerlandHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “Winkenbach SA propose des solutions sur mesure en chauffage-froid, ventilation / climatisation et sanitaire pour bâtiments privés, publics et industriels.” Source: RevenueBase Database · checked Sep 28, 2026
19	Epro Engineering	Indirect evidence	Gümligen, SwitzerlandHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “EPRO ENGINEERING ist eine unabhängige und neutrale Gebäudetechnikplanungsfirma.” Source: RevenueBase Database · checked Sep 28, 2026
20	Tecnoservice Engineering SA	Indirect evidence	Fribourg, SwitzerlandHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “TECNOSERVICE ENGINEERING SA est un bureau d’études et d’ingénieurs conseils pour les installations techniques et études énergétiques liées au bâtiment et à l’industrie.” Source: RevenueBase Database · checked Sep 28, 2026
21	Ifec Ingegneria SA	Partial evidence	Rivera-monteceneri, SwitzerlandHQ checked Sep 28, 2026	51-200	25 contacts →
	Partial evidence “IFEC ingegneria SA is a consulting company in the field of energy, building physics, acoustics and applied environmental sciences.” Source: RevenueBase Database · checked Sep 28, 2026
22	Klinova AG	Indirect evidence	8006, SwitzerlandHQ checked Sep 28, 2026	51-200	24 contacts →
	Indirect evidence “Die Klinova AG ist Ihr Systemprofi im Bereich der Gebäude, Energie- und Prozesstechnik.” Source: RevenueBase Database · checked Sep 28, 2026
23	Willi Gebäudetechnik AG	Indirect evidence	Chur, SwitzerlandHQ checked Sep 28, 2026	51-200	24 contacts →
	Indirect evidence “Die Willi Gebäudetechnik AG mit Sitz in Chur wurde 1890 gegründet und ist vorwiegend im Kanton Graubünden tätig.” Source: RevenueBase Database · checked Sep 28, 2026
24	R. Häsler AG	Indirect evidence	Möhlin, SwitzerlandHQ checked Sep 28, 2026	201-500	23 contacts →
	Indirect evidence “Ihr kompetenter Ansprechpartner für Heizungs- und Lüftungsprojekte.” Source: RevenueBase Database · checked Sep 28, 2026
25	W. Rokitzky AG	Indirect evidence	8304 Wallisellen, SwitzerlandHQ checked Sep 28, 2026	51-200	23 contacts →
	Indirect evidence “Unsere inhabergeführte Unternehmensstruktur verkürzt Kommunikations- und Entscheidungswege für Bauherren und Auftraggeber massgeblich.” Source: RevenueBase Database · checked Sep 28, 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: hvac consulting firms. 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 hvac consulting firms.
Partial evidence: Its own public description names part of hvac consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac consulting firms. 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 572 hvac consulting firms based in Switzerland

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Hvac consulting firms based in Switzerland at a glance

As of Sep 28, 2026

36.5%Verified-email coverage

5.8Average contacts per company

1-10Median size (employees)

5.8%Largest-city concentration · Zurich

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

318

11-50

181

51-200

201-500

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 572 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 hvac 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 Switzerland whose own description of what they do matches “hvac 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 hvac 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 hvac consulting firms, and records with no verified work email. Companies headquartered outside Switzerland 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, 1,208 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 28, 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.

Hvac consulting firms by metro

Hvac consulting firms in Zurich33

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 hvac 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 hvac consulting firms are there based in Switzerland?

RevenueBase identified 572 hvac consulting firms headquartered in Switzerland 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?

Hoval Schweiz, headquartered in Switzerland, tops this list with the largest team on record.

Which city has the most hvac consulting firms?

Zurich leads with 33 headquartered companies, followed by Geneve (14) and Bern (13).

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 1,208 verified decision-maker contacts tracked across these 572 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 28, 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.