Company lists · Data refreshed October 2026

Top 25 Cleanroom ventilation contractors based in Canada

Name: Cleanroom ventilation contractors based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 80 companies tracked

RevenueBase identified 80 company matches for cleanroom ventilation contractors associated with Canada as of October 2026 and tracks 1,042 professional contacts across them, including 458 with verified work emails. Montreal is the largest hub.

This list covers company matches for cleanroom ventilation contractors associated with Canada, 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 October 9, 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 Oct 9, 2026 How this list was built

80Companies

1,042Contacts tracked

458Verified emails

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The 25 largest cleanroom ventilation contractors based in Canada

Ranked by team size

Top 25 of 80 company matches for cleanroom ventilation contractors based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Oxygen8	Exact match	Burnaby, BC, CanadaHQ recorded Oct 9, 2026	201-500	124 contacts →
	Exact match “Ox·y·gen·ate your space.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Conviron	Exact match	Winnipeg, MB, CanadaHQ recorded Oct 9, 2026	51-200	99 contacts →
	Exact match “Established in 1964, Conviron is the world leader in the design, manufacture and installation of controlled environment systems for plant science research.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	Mecart	Exact match	Saint-augustin-de-desmaures, QC, CanadaHQ recorded Oct 9, 2026	51-200	87 contacts →
	Exact match “Mecart is a leader and innovator in controlled environments.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Ingenia Technologies INC	Exact match	Mirabel, QC, CanadaHQ recorded Oct 9, 2026	51-200	80 contacts →
	Exact match “Ingénia is a leading-edge technologies company that specializes in the design and manufacture of high-quality air handling units, from fast delivery modular units to fully custom…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Lysair	Exact match	Laval, QC, CanadaHQ recorded Oct 9, 2026	51-200	60 contacts →
	Exact match “Depuis 1987, Lysair se démarque par la qualité de ses projets et de ses services d’entretien en ventilation, climatisation et chauffage dans les secteurs résidentiels…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Duraclim	Exact match	Montreal, QC, CanadaHQ recorded Oct 9, 2026	51-200	37 contacts →
	Exact match “Chez DuraClim, nous sommes déterminés à garantir votre confort tout au long de l'année.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	ESC	Exact match	Barrie, ON, CanadaHQ recorded Oct 9, 2026	11-50	31 contacts →
	Exact match “ESC takes an innovative Design/Build approach to Cleanrooms through 3 vertically integrated pillars.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Vddo-Qat	Exact match	Delson, QC, CanadaHQ recorded Oct 9, 2026	51-200	25 contacts →
	Exact match “Since its foundation in 1983, VDDO has built a solid reputation as the supplier of choice for ventilation products and air treatment systems to contractors and engineers in the…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Capt-Air INC	Exact match	Montreal, QC, CanadaHQ recorded Oct 9, 2026	11-50	14 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	Allied Blower & Sheet Metal	Exact match	Surrey, BC, CanadaHQ recorded Oct 9, 2026	51-200	12 contacts →
	Exact match “For 40+ years, Allied Blower & Sheet Metal Ltd.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Belnor Engineering INC	Exact match	Toronto, ON, CanadaHQ recorded Oct 9, 2026	11-50	12 contacts →
	Exact match “For over 30 years, Belnor Engineering has been designing and building precision airflow control solutions that are innovative and cost less to operate and maintain.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	ACH Engineering	Exact match	Mississauga, ON, CanadaHQ recorded Oct 9, 2026	1-10	12 contacts →
	Exact match “ACH Engineering is a premier turnkey solution provider specializing in the design, and construction of complex, high-compliance facilities.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Airgenuity INC	Exact match	Toronto, ON, CanadaHQ recorded Oct 9, 2026	11-50	10 contacts →
	Exact match “Located in Toronto and servicing all of southern Ontario and Quebec, AirGenuity was founded in as an engineering and integration firm specializing in precision airflow in critical…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Lawson-Taylor LTD	Exact match	Dundas, ON, CanadaHQ recorded Oct 9, 2026	11-50	10 contacts →
	Exact match “With over 50 years of experience, Lawson-Taylor Limited has established itself as a premier source of industrial ventilation products, custom air-handling equipment, as well as…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	DFMZ	Exact match	Ottawa, ON, CanadaHQ recorded Oct 9, 2026	11-50	9 contacts →
	Exact match “DFMZ provides custom cleanroom solutions and lab equipment including biological safety cabinets, laminar airflow hoods, robotic/automation enclosures, extraction hoods, wet…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Duroair Technologies INC	Exact match	Niagara Falls, ON, CanadaHQ recorded Oct 9, 2026	11-50	9 contacts →
	Exact match “With over a decade of experience, Duroair has fast become a leader in innovative airflow and air filtration technology.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Consab International INC	Exact match	Bromont, QC, CanadaHQ recorded Oct 9, 2026	1-10	8 contacts →
	Exact match “Consab works in the areas of cleanrooms and controlled environments.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Balvent INC	Exact match	Québec, QC, CanadaHQ recorded Oct 9, 2026	11-50	8 contacts →
	Exact match “Depuis 1976, Balvent propose des services de grande qualité, grâce à son savoir-faire reconnu au Québec.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	Venmar Ventilation ULC	Exact match	Drummondville, QC, CanadaHQ recorded Oct 9, 2026	201-500	7 contacts →
	Exact match “We are the North American leader in air quality.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	AIR System Supplies	Exact match	Vancouver, BC, CanadaHQ recorded Oct 9, 2026	1-10	7 contacts →
	Exact match “Air System Supplies offers a wide variety of products for ventilation, air control, vibration isolation & seismic, & room acoustics.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Lanrefco	Exact match	Saint-laurent, QC, CanadaHQ recorded Oct 9, 2026	11-50	6 contacts →
	Exact match “Fondé en 1989, Lanrefco est une entreprise spécialisée dans la construction et l’entretien des systèmes de ventilation, climatisation et contrôles.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Ventilex INC	Exact match	Saint-Eustache, QC, CanadaHQ recorded Oct 9, 2026	51-200	6 contacts →
	Exact match “Depuis 1975, Ventilex est associée au développement du paysage architectural québécois à titre de fabricant et/ou de fournisseur de produits et systèmes de ventilation des…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Diffusair	Exact match	Saint-laurent, QC, CanadaHQ recorded Oct 9, 2026	11-50	5 contacts →
	Exact match “Nous sommes une firme experte en ventilation, climatisation et chauffage.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	JAS Filtration	Exact match	St-hubert, QC, CanadaHQ recorded Oct 9, 2026	11-50	5 contacts →
	Exact match “Depuis plus de 40 ans, JAS Filtration excelle dans les solutions de filtration commerciales, industrielles et institutionnelles, en posant des diagnostics justes et élaborés…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	Clean AIR Services Canada LTD	Exact match	Abbotsford, BC, CanadaHQ recorded Oct 9, 2026	11-50	5 contacts →
	Exact match “Established in 1989, Clean Air Services Canada Ltd.” Recorded in the RevenueBase company graph · Oct 9, 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 “cleanroom ventilation 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 80 cleanroom ventilation contractors based in Canada

See the full list, filter by size, metro and specialty, and access 458 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cleanroom ventilation contractors based in Canada at a glance

As of Oct 9, 2026

44.0%Verified-email coverage

13.0Average contacts per company

11-50Median size (employees)

11.2%Largest-city concentration · Montreal

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 80 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 Canada whose business descriptions match “cleanroom ventilation 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 458 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 October 9, 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 “cleanroom ventilation contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cleanroom ventilation contractors are there based in Canada?

RevenueBase identified 80 company matches for cleanroom ventilation contractors associated with Canada as of October 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?

Oxygen8 tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most cleanroom ventilation contractors?

Montreal leads with 9 company records, followed by Quebec (6) and Laval (4).

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 458 professional contacts with verified work emails tracked across these 80 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 October 9, 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 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.