Company lists · Data refreshed September 2026
Top 25 Air quality engineering firms based in Switzerland
RevenueBase identified 62 air quality engineering firms headquartered in Switzerland as of September 2026 and tracks 626 professional contacts across them, including 281 with verified work emails. Geneva is the largest hub.
This list covers air quality engineering 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 30, 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.
The 25 largest air quality engineering firms based in Switzerland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 186 contacts → | ||||
Strong evidence “IQAir is a Swiss-based air quality technology company that empowers the world to breathe cleaner air through information, collaboration and technology.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 71 contacts → | ||||
Indirect evidence “Wir sind ein Team von Spezialingenieuren/innen und Berater/innen.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 47 contacts → | ||||
Indirect evidence “Ecoservices SA offre des prestations d'ingénierie dans les domaines de l'environnement, de la santé-sécurité au travail et de l'amiante.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 40 contacts → | ||||
Indirect evidence “Langjährige Erfahrung und Nähe zu aktuellen Entwicklungen in sämtlichen umweltrelevanten Fragestellungen machen Ecosens zum führenden Beratungsunternehmen.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 35 contacts → | ||||
Strong evidence “Kaiterra provides a complete air quality optimization platform leveraging hardware, software and a team of experienced professionals to help companies assess and improve their…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 19 contacts → | ||||
Indirect evidence “HBI Haerter - Consulting Engineers Your partner for ventilation, aerodynamics and safety of tunnels HBI Haerter AG (CH) and HBI Haerter GmbH (DE) are firms of consulting engineers.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 18 contacts → | ||||
Indirect evidence “SB technique est un bureau d'Ingénieur Conseil en chauffage, ventilation, climatisation et sécurité du bâtiment développant des concepts énergétiques ambitieux pour des…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 15 contacts → | ||||
Indirect evidence “Le bureau est actif dans les domaines de l’énergétique des bâtiments, du chauffage, de la ventilation, de la climatisation et du sanitaire.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 12 contacts → | ||||
Indirect evidence “Energestion SA est un bureau d'ingénieurs conseils du bâtiment et en industrie.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 12 contacts → | ||||
Indirect evidence “Depuis sa création en 1986, le bureau d'études Impact SA a réalisé et coordonné de nombreux dossiers d'impact sur l'environnement.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 11 contacts → | ||||
Indirect evidence “Die Firma toumi ag mit Hauptsitz in Biel-Bienne.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 contacts → | ||||
Partial evidence “AeroSpec’s technology measures the chemical composition of air pollution - providing detailed analysis on its source, its makeup, and potential health effects.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 contacts → | ||||
Partial evidence “Qualitätssicherung für Lüftungs- und Klimaanlagen, Inbetriebsetzung und Inbetriebnahme von Lüftungs- und Klimaanlagen, Wartungen, Optimierung der Kosten- und Energieverbrauch…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Strong evidence “We are an accredited testing laboratory for air quality of ambient, indoor and workplace atmospheres based in Switzerland.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Indirect evidence “We are a versatile team with strong expertise in the analysis, quantification, and source apportionment of fine particles, including tire and brake wear, mineral dust, industrial…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 contacts → | ||||
Indirect evidence “Als klassisches Ingenieurbüro repräsentieren wir vernetzte Erfahrung in Fachdisziplinen wie Heizungs- und Kältetechnik, Lüftungs- und Klimatechnik, Energietechnik und Analysen…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 contacts → | ||||
Indirect evidence “1 First Dépollution Services SA est une entreprise spécialisée dans les travaux d’assainissement des polluants du bâtiment et les conseils associés.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 contacts → | ||||
Indirect evidence “3E Ingénieurs Sàrl est un bureau d’ingénieurs actif dans les domaines de l’énergie, l’eau et l’environnement.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 contacts → | ||||
Indirect evidence “Als unabhängiges Ingenieurbüro erbringen wir seit 2004 Beratungsdienstleistungen rund um den Umwelt- und Gesundheitsschutz in Gebäuden.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Indirect evidence “Erbringen von Ingenieurdienstleistungen im Bauwesen und Umweltmanagement wie Projektmanagement, Planungen, Beratungen, Gutachten und Expertisen.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Partial evidence “Welcome to the international world of Pure Clean Air / PCA.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “Produbati Sàrl is a company specializing in the diagnosis of building pollutants (asbestos, lead, PAH, PCB, PC, etc.), approved measurement service and radon consultant, building…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Strong evidence “tunnel ventilation design and control / smoke control / fire suppression / ambient air-quality / dispersion analysis / air filtration / environmental aerodynamics / hazard…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Société active dans l’expertise des polluants du bâtiment, la direction de travaux et le suivi de chantiers.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
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: air quality engineering 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 air quality engineering firms.
- Partial evidence
- Its own public description names part of air quality engineering firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name air quality engineering 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 62 air quality engineering firms based in Switzerland
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Air quality engineering firms based in Switzerland at a glance
As of Sep 30, 2026Companies by employee count
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 62 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 air quality engineering 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 “air quality engineering 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 air quality engineering 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 air quality engineering 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, 281 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 30, 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 air quality engineering 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 air quality engineering firms are there based in Switzerland?
RevenueBase identified 62 air quality engineering 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?
Iqair First In AIR Quality, headquartered in Steinach, tops this list with the largest team on record.
Which city has the most air quality engineering firms?
Geneva leads with 5 headquartered companies, followed by Zurich (4) and Bern (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 281 verified decision-maker contacts tracked across these 62 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 30, 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.
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