Company lists · Data refreshed September 2026

Top 25 Mechanical systems integration companies based in Canada

RevenueBase identified 1,197 mechanical systems integration companies headquartered in Canada as of September 2026 and tracks 25,208 professional contacts across them, including 11,559 with verified work emails. Calgary is the largest hub.

This list covers mechanical systems integration 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 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
1,197Companies
25,208Contacts tracked
11,559Verified emails
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The 25 largest mechanical systems integration companies based in Canada

Ranked by team size
Top 25 of 1,197 mechanical systems integration companies based in Canada, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to mechanical systems integration 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceCambridge, ON, CanadaHQ checked Sep 28, 20265,001-10,0002,754 contacts →

Indirect evidence

“HELPING ADVANCE THE FUTURE ATS Corporation is an industry-leading automation solutions provider to many of the world's most successful companies.”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidenceKanata, ON, CanadaHQ checked Sep 28, 20261,001-5,0001,556 contacts →

Indirect evidence

“We build for life.”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceVaughan, ON, CanadaHQ checked Sep 28, 20261,001-5,0001,092 contacts →

Indirect evidence

“Plan Group is a dynamic construction company that believes working together makes anything possible.”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceVancouver, BC, CanadaHQ checked Sep 28, 20261,001-5,000805 contacts →

Partial evidence

“With decades of experience and offices coast to coast, Paladin Technologies has emerged as the premier complex systems integrator in North America.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceToronto, ON, CanadaHQ checked Sep 28, 2026501-1,000672 contacts →

Indirect evidence

“What does it take to be one of Canada’s most respected integrated engineering firms?”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceCambridge, ON, CanadaHQ checked Sep 28, 2026501-1,000621 contacts →

Indirect evidence

“Eclipse builds precision machines for manufacturing.”

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceMontreal, QC, CanadaHQ checked Sep 28, 2026501-1,000400 contacts →

Indirect evidence

“Dedicated to Excellence For over a century, Carmichael has been delivering expert solutions in HVAC, industrial refrigeration, automation, combustion, energy, and scientific…”

Source: RevenueBase Database · checked Sep 28, 2026
8Strong evidenceRichmond, BC, CanadaHQ checked Sep 28, 2026501-1,000384 contacts →

Strong evidence

“Canem Systems is a leading full-service electrical and mechanical contractor, offering comprehensive services across Canada.”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceLaval, QC, CanadaHQ checked Sep 28, 2026501-1,000338 contacts →

Indirect evidence

“Founded in 1974, Regulvar is a private company operating nationally.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceEdmonton, AB, CanadaHQ checked Sep 28, 2026201-500327 contacts →

Indirect evidence

“Delivering confidence for over 40 years.”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceLongueuil, QC, CanadaHQ checked Sep 28, 2026501-1,000280 contacts →

Indirect evidence

“Thanks to its multidisciplinary team, Navada offers a simple, turnkey approach to building services engineering.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceEdmonton, AB, CanadaHQ checked Sep 28, 2026201-500208 contacts →

Partial evidence

“Founded in 1968, Gateway Mechanical is a privately owned company that has established itself as a leader in the commercial and industrial refrigeration, heating and air…”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceMontréal, QC, CanadaHQ checked Sep 28, 2026501-1,000195 contacts →

Indirect evidence

“Depuis plus de 42 ans, Gastier est synonyme de qualité et de service dans le domaine mécanique et électrique.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceLaval, QC, CanadaHQ checked Sep 28, 2026201-500191 contacts →

Indirect evidence

“Kolostat Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceMississauga, ON, CanadaHQ checked Sep 28, 202651-200187 contacts →

Indirect evidence

“For over 60 years, Proax Technologies has been a leading Technical Automation Distributor offering innovative product solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
16Partial evidenceSurrey, BC, CanadaHQ checked Sep 28, 2026501-1,000182 contacts →

Partial evidence

“Since 1995 Ocean Park Mechanical has delivered exceptional service and outstanding value to our customers.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceCalgary, AB, CanadaHQ checked Sep 28, 2026201-500173 contacts →

Partial evidence

“Tetranex Solutions is a multi-discipline engineering company specializing in industrial automation, electrical systems, process engineering, digital infrastructure and…”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceSurrey, BC, CanadaHQ checked Sep 28, 2026501-1,000170 contacts →

Indirect evidence

“Established in Vancouver over thirty-five years ago, ESC is a leading service provider in Building Automation and Energy Management.”

Source: RevenueBase Database · checked Sep 28, 2026
19Partial evidenceMississauga, ON, CanadaHQ checked Sep 28, 2026201-500149 contacts →

Partial evidence

“MultiTech Trades Corp is a full-service mechanical, electrical, controls, plumbing and building services contractor delivering complex ICI, institutional, and critical…”

Source: RevenueBase Database · checked Sep 28, 2026
20Partial evidenceCalgary, AB, CanadaHQ checked Sep 28, 202651-200142 contacts →

Partial evidence

“Arpi’s Industries, a full service mechanical contractor, provides heating, air conditioning, ventilation, plumbing, and air quality solutions to residential and commercial markets.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceSharon, ON, CanadaHQ checked Sep 28, 2026201-500133 contacts →

Indirect evidence

“Kelson has been in business for over 80 years.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceCalgary, AB, CanadaHQ checked Sep 28, 202651-200125 contacts →

Indirect evidence

“Since 1997, Tarco has delivered innovative engineering and automation solutions and services to a broad range of clients and industries around the world.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceBarrie, ON, CanadaHQ checked Sep 28, 2026201-500120 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
24Indirect evidenceLondon, ON, CanadaHQ checked Sep 28, 202651-200113 contacts →

Indirect evidence

“BOS Innovations executes industrial automation solutions with excellence that solve manufacturers’ challenges with advanced technology for the future.”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceSherbrooke, QC, CanadaHQ checked Sep 28, 2026201-500113 contacts →

Indirect evidence

“Le Groupe PMI a pour mission de développer une offre de services complète pour la réalisation de projets industriels et de maintenance pour l'ensemble des industries primaires…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 1,197 mechanical systems integration companies based in Canada

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Mechanical systems integration companies based in Canada at a glance

As of Sep 28, 2026
45.9%Verified-email coverage
21.1Average contacts per company
11-50Median size (employees)
4.8%Largest-city concentration · Calgary
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
492
11-50
453
51-200
200
201-500
32
501-1,000
11
1,001-5,000
4
5,001-10,000
1

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 1,197 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 mechanical systems integration 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 “mechanical systems integration 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 mechanical systems integration 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 mechanical systems integration 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, 11,559 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.

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 mechanical systems integration 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 mechanical systems integration companies are there based in Canada?

RevenueBase identified 1,197 mechanical systems integration 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?

ATS Corporation, headquartered in Cambridge, tops this list with the largest team on record.

Which city has the most mechanical systems integration companies?

Calgary leads with 57 headquartered companies, followed by Toronto (56) and Edmonton (45).

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 11,559 verified decision-maker contacts tracked across these 1,197 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.