Company lists · Data refreshed September 2026

Top 25 Air consulting and engineering companies based in Canada

Name: Air consulting and engineering companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 276 companies tracked

RevenueBase identified 276 air consulting and engineering companies headquartered in Canada as of September 2026 and tracks 3,644 professional contacts across them, including 2,038 with verified work emails. Montreal is the largest hub.

This list covers air consulting and engineering companies headquartered in Canada, 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 21, 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 21, 2026 86% judged on-target in blind review

276Companies

3,644Contacts tracked

2,038Verified emails

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The 25 largest air consulting and engineering companies based in Canada

Ranked by team size

Top 25 of 276 air consulting and engineering companies based in Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to air consulting and engineering companies: 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	RWDI	Strong evidence	Guelph, ON, CanadaHQ checked Sep 21, 2026	501-1,000	737 contacts →
	Strong evidence “We are a leading global climate and performance engineering consulting firm dedicated to creating harmony between the built and natural world.” Source: RevenueBase Database · checked Sep 21, 2026
2	LEA Group	Strong evidence	Markham, ON, CanadaHQ checked Sep 21, 2026	201-500	370 contacts →
	Strong evidence “LEA Group (LEA) is a privately-held, global consulting firm providing planning, engineering design, and construction administration services for urban infrastructure projects.” Source: RevenueBase Database · checked Sep 21, 2026
3	Keystone Environmental	Indirect evidence	Burnaby, BC, CanadaHQ checked Sep 21, 2026	51-200	158 contacts →
	Indirect evidence “Keystone Environmental is a proudly Canadian (owned and operated) full service environmental consultancy helping businesses meet their environmental goals and objectives.” Source: RevenueBase Database · checked Sep 21, 2026
4	Pluritec Ltée	Indirect evidence	Trois-rivières, QC, CanadaHQ checked Sep 21, 2026	51-200	128 contacts →
	Indirect evidence “Chez Pluritec, on a notre monde en tête.” Source: RevenueBase Database · checked Sep 21, 2026
5	Altitude Aerospace	Partial evidence	Saint-laurent, QC, CanadaHQ checked Sep 21, 2026	51-200	118 contacts →
	Partial evidence “Founded in 2005, the ALTITUDE AEROSPACE GROUP is a leading engineering firm specializing in the development of new aircraft programs as well as support for existing aircraft…” Source: RevenueBase Database · checked Sep 21, 2026
6	BGE Indoor AIR Quality Solutions	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 21, 2026	51-200	108 contacts →
	Partial evidence “AT BGE, WE BELIEVE CLEAN AIR MATTERS BGE Indoor Air Quality Solutions is committed to keeping people healthy in their workplaces, buildings, and communities.” Source: RevenueBase Database · checked Sep 21, 2026
7	NVIRA	Strong evidence	Montréal, QC, CanadaHQ checked Sep 21, 2026	51-200	106 contacts →
	Strong evidence “Since 2009, Nvira has established itself as a multidisciplinary environmental engineering consulting firm committed to delivering a distinctive client experience, providing…” Source: RevenueBase Database · checked Sep 21, 2026
8	Avia NG Airport Consultants	Partial evidence	Southampton, ON, CanadaHQ checked Sep 21, 2026	51-200	95 contacts →
	Partial evidence “Avia NG Airport Consultants is Canadian owned and operated aviation consulting firm specializing in airport and heliport planning, design, contract administration and construction…” Source: RevenueBase Database · checked Sep 21, 2026
9	Intervistas Consulting	Partial evidence	Vancouver, BC, CanadaHQ checked Sep 21, 2026	51-200	75 contacts →
	Partial evidence “InterVISTAS Consulting Group is a global management consulting firm with extensive expertise in aviation, transportation and tourism.” Source: RevenueBase Database · checked Sep 21, 2026
10	AVIZO	Indirect evidence	Sherbrooke, QC, CanadaHQ checked Sep 21, 2026	51-200	66 contacts →
	Indirect evidence “Avizo est une firme de consultants spécialisés en environnement et en génie civil ayant plus de 30 ans d’expérience.” Source: RevenueBase Database · checked Sep 21, 2026
11	Mécanique RH	Indirect evidence	Laval, QC, CanadaHQ checked Sep 21, 2026	51-200	58 contacts →
	Indirect evidence “MÉCANIQUE RH fait siennes les exigences de ses clients : que ce soit dans le domaine de la ventilation, de la climatisation, du chauffage, de la réfrigération, de la régulation…” Source: RevenueBase Database · checked Sep 21, 2026
12	Safetech Environmental Limited	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	51-200	55 contacts →
	Partial evidence “Safetech Environmental Limited (Safetech) is a proudly Canadian environmental consulting firm with a national reach.” Source: RevenueBase Database · checked Sep 21, 2026
13	Aiolos Engineering Corporation	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	45 contacts →
	Partial evidence “Aiolos Engineering Corporation is an engineering and project management company based in Toronto, Ontario, Canada.” Source: RevenueBase Database · checked Sep 21, 2026
14	Nichols Environmental Engineering	Strong evidence	Edmonton, AB, CanadaHQ checked Sep 21, 2026	51-200	44 contacts →
	Strong evidence “We are an environmental and engineering consulting firm, providing strategic solutions to meet your unique business needs.” Source: RevenueBase Database · checked Sep 21, 2026
15	LES Industries Perform AIR	Indirect evidence	Candiac, QC, CanadaHQ checked Sep 21, 2026	51-200	38 contacts →
	Indirect evidence “Chef de file au Québec en matière de systèmes de ventilation, climatisation, et chauffage, nous accompagnons l’ensemble de nos clients depuis plus de 30 ans.” Source: RevenueBase Database · checked Sep 21, 2026
16	Consulair Gestion AIR ET Environnement	Partial evidence	Québec, CanadaHQ checked Sep 21, 2026	51-200	36 contacts →
	Partial evidence “Consulair est un des leaders canadiens en tout ce qui a trait à la gestion globale de projets pour l’air et l'environnement- Services d'ingénierie des procédés- Échantillonnage…” Source: RevenueBase Database · checked Sep 21, 2026
17	MC Ventilation	Indirect evidence	Blainville, QC, CanadaHQ checked Sep 21, 2026	11-50	34 contacts →
	Indirect evidence “L’expertise de MC Ventilation permet aux entreprises du secteur commercial et industriel de Montréal et des environs de profiter d’espaces de vente et de travail dont le climat…” Source: RevenueBase Database · checked Sep 21, 2026
18	Gradient Wind	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 21, 2026	11-50	34 contacts →
	Partial evidence “For 30 years, Gradient Wind Engineering has offered a comprehensive range of wind, snow, acoustic, noise and vibration engineering services to developers, architects, structural…” Source: RevenueBase Database · checked Sep 21, 2026
19	Modalis Infrastructure Partners INC	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 21, 2026	51-200	32 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
20	Jewell Engineering INC	Partial evidence	Belleville, ON, CanadaHQ checked Sep 21, 2026	51-200	30 contacts →
	Partial evidence “For over twenty-five years, JE has been providing engineering solutions to all levels of government and the private sector.” Source: RevenueBase Database · checked Sep 21, 2026
21	Candevcon Limited	Indirect evidence	Brampton, ON, CanadaHQ checked Sep 21, 2026	11-50	29 contacts →
	Indirect evidence “Candevcon, established in 1987, is a Canadian-owned multi-disciplinary company of engineers, planners and technologists.” Source: RevenueBase Database · checked Sep 21, 2026
22	Octant Aviation	Strong evidence	St-hubert, QC, CanadaHQ checked Sep 21, 2026	11-50	29 contacts →
	Strong evidence “OCTANT Aviation is a consulting firm specializing in air transport.” Source: RevenueBase Database · checked Sep 21, 2026
23	Sigma Heating & Cooling	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	201-500	27 contacts →
	Indirect evidence “Sigma is an HVAC company founded in 1997, serving multiple market sectors.” Source: RevenueBase Database · checked Sep 21, 2026
24	Elisen	Partial evidence	Laval, QC, CanadaHQ checked Sep 21, 2026	11-50	25 contacts →
	Partial evidence “Elisen is a leading provider of aerospace engineering and certification services.” Source: RevenueBase Database · checked Sep 21, 2026
25	Groupe ADF Canada	Partial evidence	Brossard, QC, CanadaHQ checked Sep 21, 2026	11-50	24 contacts →
	Partial evidence “LATESYS offers structural design engineering services to the aerospace, defense, space and transportation industries.” Source: RevenueBase Database · checked Sep 21, 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: air consulting and engineering companies. 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 consulting and engineering companies.
Partial evidence: Its own public description names part of air consulting and engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name air consulting and engineering companies. 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 276 air consulting and engineering companies based in Canada

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Air consulting and engineering companies based in Canada at a glance

As of Sep 21, 2026

55.9%Verified-email coverage

13.2Average contacts per company

1-10Median size (employees)

9.4%Largest-city concentration · Montreal

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

167

11-50

51-200

201-500

501-1,000

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 276 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 consulting and engineering companies, 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 Canada whose own description of what they do matches “air consulting and engineering companies”. 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 consulting and engineering companies), 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 consulting and engineering companies, and records with no verified work email. Companies headquartered outside Canada 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, 2,038 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 21, 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.

Air consulting and engineering companies by metro

Air consulting and engineering companies in Montreal26

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 consulting and engineering companies, 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 consulting and engineering companies are there based in Canada?

RevenueBase identified 276 air consulting and engineering companies headquartered in Canada 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?

RWDI, headquartered in Guelph, tops this list with the largest team on record.

Which city has the most air consulting and engineering companies?

Montreal leads with 26 headquartered companies, followed by Calgary (18) and Toronto (17).

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 2,038 verified decision-maker contacts tracked across these 276 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 21, 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.