Company lists · Data refreshed September 2026

Top 25 Mechanical systems integrators based in Canada

Name: Mechanical systems integrators based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 1,025 companies tracked

RevenueBase identified 1,025 mechanical systems integrators headquartered in Canada as of September 2026 and tracks 22,840 professional contacts across them, including 10,568 with verified work emails. Calgary is the largest hub.

This list covers mechanical systems integrators 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

1,025Companies

22,840Contacts tracked

10,568Verified emails

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The 25 largest mechanical systems integrators based in Canada

Ranked by team size

Top 25 of 1,025 mechanical systems integrators 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 integrators: 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	ATS Corporation	Indirect evidence	Cambridge, ON, CanadaHQ checked Sep 28, 2026	5,001-10,000	2,754 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
2	Modern Niagara	Indirect evidence	Kanata, ON, CanadaHQ checked Sep 28, 2026	1,001-5,000	1,556 contacts →
	Indirect evidence “We build for life.” Source: RevenueBase Database · checked Sep 28, 2026
3	Plan Group INC	Indirect evidence	Vaughan, ON, CanadaHQ checked Sep 28, 2026	1,001-5,000	1,092 contacts →
	Indirect evidence “Plan Group is a dynamic construction company that believes working together makes anything possible.” Source: RevenueBase Database · checked Sep 28, 2026
4	Cimco Refrigeration INC	Partial evidence	Burlington, ON, CanadaHQ checked Sep 28, 2026	1,001-5,000	738 contacts →
	Partial evidence “CIMCO Refrigeration specializes in the engineering, design, manufacture, installation and service of industrial, process cooling and recreational refrigeration systems.” Source: RevenueBase Database · checked Sep 28, 2026
5	Smith Andersen	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 28, 2026	501-1,000	672 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
6	Allnorth Consultants Limited	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 28, 2026	501-1,000	659 contacts →
	Indirect evidence “Allnorth is a multi-disciplinary engineering, project delivery, and construction services company.” Source: RevenueBase Database · checked Sep 28, 2026
7	Carmichael Engineering LTD	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 28, 2026	501-1,000	400 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
8	Regulvar INC	Indirect evidence	Laval, QC, CanadaHQ checked Sep 28, 2026	501-1,000	338 contacts →
	Indirect evidence “Founded in 1974, Regulvar is a private company operating nationally.” Source: RevenueBase Database · checked Sep 28, 2026
9	The JNE Group Of Companies	Indirect evidence	Hamilton, ON, CanadaHQ checked Sep 28, 2026	201-500	293 contacts →
	Indirect evidence “The JNE Group of Companies is a full-service, multi-disciplinary engineering and construction services firm headquartered in Hamilton, Ontario, Canada and Pittsburgh…” Source: RevenueBase Database · checked Sep 28, 2026
10	Navada	Indirect evidence	Longueuil, QC, CanadaHQ checked Sep 28, 2026	501-1,000	280 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
11	Startec Compression & Process And Startec Service	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 28, 2026	51-200	214 contacts →
	Indirect evidence “Founded in 1976, Startec is one of the most trusted names in fit-for-purpose industrial refrigeration equipment and modular gas process solutions.” Source: RevenueBase Database · checked Sep 28, 2026
12	Gateway Mechanical Services	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 28, 2026	201-500	208 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
13	Kolostat	Indirect evidence	Laval, QC, CanadaHQ checked Sep 28, 2026	201-500	191 contacts →
	Indirect evidence “Kolostat Inc.” Source: RevenueBase Database · checked Sep 28, 2026
14	Ocean Park Mechanical	Partial evidence	Surrey, BC, CanadaHQ checked Sep 28, 2026	501-1,000	182 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
15	TMI Climate Solutions	Indirect evidence	Pointe-claire, QC, CanadaHQ checked Sep 28, 2026	51-200	157 contacts →
	Indirect evidence “For more than 40 years, TMI Climate Solutions has been committed to manufacturing the highest quality custom air handling units while offering superior customer satisfaction.” Source: RevenueBase Database · checked Sep 28, 2026
16	Multitech Trades Corp	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 28, 2026	201-500	149 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
17	Pitt Meadows Plumbing	Strong evidence	Maple Ridge, BC, CanadaHQ checked Sep 28, 2026	201-500	144 contacts →
	Strong evidence “At Pitt Meadows Plumbing, we don’t just build mechanical systems-we build something iconic.” Source: RevenueBase Database · checked Sep 28, 2026
18	Arpi's Industries LTD	Partial evidence	Calgary, AB, CanadaHQ checked Sep 28, 2026	51-200	142 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
19	Neelands Group	Indirect evidence	Burlington, ON, CanadaHQ checked Sep 28, 2026	201-500	139 contacts →
	Indirect evidence “Neelands Group has operated for over 60 years and is a leader in the North American market for design, installation and service of Refrigeration, HVAC, Controls, Energy Management…” Source: RevenueBase Database · checked Sep 28, 2026
20	Scott Springfield By Modine	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 28, 2026	501-1,000	133 contacts →
	Indirect evidence “Built With Pride Since 1978, Scott Springfield by Modine is a leading manufacturer of Custom Air Handlers.” Source: RevenueBase Database · checked Sep 28, 2026
21	Kelson	Indirect evidence	Sharon, ON, CanadaHQ checked Sep 28, 2026	201-500	133 contacts →
	Indirect evidence “Kelson has been in business for over 80 years.” Source: RevenueBase Database · checked Sep 28, 2026
22	PML Professional Mechanical LTD	Strong evidence	Coquitlam, BC, CanadaHQ checked Sep 28, 2026	201-500	129 contacts →
	Strong evidence “We are PML Professional Mechanical Ltd, a leader in Building Systems in Western Canada.” Source: RevenueBase Database · checked Sep 28, 2026
23	TARCO	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 28, 2026	51-200	125 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
24	Dynamysk Automation LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 28, 2026	201-500	108 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
25	Zero-C	Indirect evidence	Saint-bruno-de-montarville, QC, CanadaHQ checked Sep 28, 2026	201-500	103 contacts →
	Indirect evidence “ZERO-C is the reference in terms of innovation, quality and energy efficiency in the areas of commercial and industrial refrigeration, air conditioning, ventilation, heating and…” 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: mechanical systems integrators. 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 mechanical systems integrators.
Partial evidence: Its own public description names part of mechanical systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mechanical systems integrators. 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 1,025 mechanical systems integrators based in Canada

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Mechanical systems integrators based in Canada at a glance

As of Sep 28, 2026

46.3%Verified-email coverage

22.3Average contacts per company

11-50Median size (employees)

5.4%Largest-city concentration · Calgary

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

388

11-50

401

51-200

187

201-500

501-1,000

1,001-5,000

5,001-10,000

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 1,025 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 integrators, 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 integrators”. 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 integrators), 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 integrators, 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, 10,568 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.

Mechanical systems integrators by metro

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 integrators, 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 integrators are there based in Canada?

RevenueBase identified 1,025 mechanical systems integrators 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 integrators?

Calgary leads with 55 headquartered companies, followed by Mississauga (44) and Toronto (44).

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 10,568 verified decision-maker contacts tracked across these 1,025 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.