Company lists · Data refreshed September 2026

Top 25 Hvac system optimization firms based in Canada

Name: Hvac system optimization firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 782 companies tracked

RevenueBase identified 782 hvac system optimization firms headquartered in Canada as of September 2026 and tracks 8,719 professional contacts across them, including 3,624 with verified work emails. Toronto is the largest hub.

This list covers hvac system optimization firms 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 20, 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 20, 2026 86% judged on-target in blind review

782Companies

8,719Contacts tracked

3,624Verified emails

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The 25 largest hvac system optimization firms based in Canada

Ranked by team size

Top 25 of 782 hvac system optimization firms based in Canada, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to hvac system optimization firms: 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	HTS Engineering	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	1,001-5,000	714 contacts →
	Indirect evidence “Your success is our success.” Source: RevenueBase Database · checked Sep 20, 2026
2	Carmichael Engineering LTD	Partial evidence	Montreal, QC, CanadaHQ checked Sep 20, 2026	501-1,000	400 contacts →
	Partial 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 20, 2026
3	Regulvar INC	Indirect evidence	Laval, QC, CanadaHQ checked Sep 20, 2026	501-1,000	338 contacts →
	Indirect evidence “Founded in 1974, Regulvar is a private company operating nationally.” Source: RevenueBase Database · checked Sep 20, 2026
4	Navada	Indirect evidence	Longueuil, QC, CanadaHQ checked Sep 20, 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 20, 2026
5	ESC Automation	Indirect evidence	Surrey, BC, CanadaHQ checked Sep 20, 2026	501-1,000	170 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 20, 2026
6	Brainbox AI	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 20, 2026	51-200	167 contacts →
	Indirect evidence “BrainBox AI, part of Trane Technologies, is the leading AI-powered building management platform, driving smarter, greener, and more efficient real estate portfolios.” Source: RevenueBase Database · checked Sep 20, 2026
7	Arpi's Industries LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 20, 2026	51-200	142 contacts →
	Indirect 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 20, 2026
8	Neelands Group	Partial evidence	Burlington, ON, CanadaHQ checked Sep 20, 2026	201-500	139 contacts →
	Partial 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 20, 2026
9	ITC Technologies INC	Indirect evidence	Québec, QC, CanadaHQ checked Sep 20, 2026	51-200	117 contacts →
	Indirect evidence “Fondée en 1975, d’abord sous le nom de Roland Guillemette Inc, l’entreprise ITC Technologies a su développer au fil des années une expertise de qualité comme agent manufacturier…” Source: RevenueBase Database · checked Sep 20, 2026
10	Zero-C	Indirect evidence	Saint-bruno-de-montarville, QC, CanadaHQ checked Sep 20, 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 20, 2026
11	Trane Canada	Indirect evidence	Markham, ON, CanadaHQ checked Sep 20, 2026	501-1,000	100 contacts →
	Indirect evidence “Across Canada, Trane Commercial is more than a brand-it’s a promise.” Source: RevenueBase Database · checked Sep 20, 2026
12	ACCS	Indirect evidence	Terrebonne, QC, CanadaHQ checked Sep 20, 2026	51-200	90 contacts →
	Indirect evidence “Leader au Québec en automatisation et en intégration technologique, ACCS améliore la performance des bâtiments depuis plus de 30 ans.” Source: RevenueBase Database · checked Sep 20, 2026
13	Olympic International Sales Limited	Partial evidence	North Vancouver, BC, CanadaHQ checked Sep 20, 2026	51-200	89 contacts →
	Partial evidence “Olympic International is a premier provider of heating, ventilating and air conditioning (HVAC) equipment design, engineering support and training serving Western Canada.” Source: RevenueBase Database · checked Sep 20, 2026
14	Baulne	Partial evidence	Lachine, QC, CanadaHQ checked Sep 20, 2026	51-200	89 contacts →
	Partial evidence “BAULNE is a company based in Montreal and Quebec City, providing HVAC building mechanics services (heating/cooling) for the following sectors: industrial, commercial…” Source: RevenueBase Database · checked Sep 20, 2026
15	ICE Western Sales	Partial evidence	Calgary, AB, CanadaHQ checked Sep 20, 2026	51-200	66 contacts →
	Partial evidence “ICE has been a HVAC manufacturer with two facilities in Canada with one in Winnipeg (since 1961) and Calgary (since 1991) and one in the USA, Tennessee (since 1993).” Source: RevenueBase Database · checked Sep 20, 2026
16	Simply Green Home Services INC	Partial evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	201-500	60 contacts →
	Partial evidence “Simply Green offers a wide range of options to help you get equipped with reliable, top-quality, high-efficiency heating and cooling systems.” Source: RevenueBase Database · checked Sep 20, 2026
17	Mits Airconditioning INC	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 20, 2026	51-200	59 contacts →
	Partial evidence “Founded in 1987 by President, Jack Eliav, Mits Air has grown from a single room operation to an HVAC distribution company with 5 fully stocked branches, 9 distribution warehouses…” Source: RevenueBase Database · checked Sep 20, 2026
18	Mécanique RH	Indirect evidence	Laval, QC, CanadaHQ checked Sep 20, 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 20, 2026
19	Advanced Energy Management LTD	Partial evidence	Dartmouth, NS, CanadaHQ checked Sep 20, 2026	51-200	57 contacts →
	Partial evidence “SYSTEM INTEGRATORS for COMMERCIAL AND INDUSTRIAL CONTROL SYSTEMS.” Source: RevenueBase Database · checked Sep 20, 2026
20	Lar-Mex INC	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 20, 2026	51-200	57 contacts →
	Partial evidence “Lar-Mex with a staff of over 200 employees has been providing heating, ventilation, plumbing and air conditioning (HVAC) services to the National Capital region for over 30 years.” Source: RevenueBase Database · checked Sep 20, 2026
21	PMC Energy Limited	Indirect evidence	Moncton, NB, CanadaHQ checked Sep 20, 2026	51-200	56 contacts →
	Indirect evidence “Considering over 40% of all energy is consumed by buildings, it is no wonder building managers and owners are becoming increasingly mindful of energy costs and usage.” Source: RevenueBase Database · checked Sep 20, 2026
22	Legacy Heating & Cooling	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 20, 2026	51-200	56 contacts →
	Partial evidence “Legacy offers the most comprehensive, efficient and cost-effective HVAC products and services in Greater Edmonton and Calgary areas.” Source: RevenueBase Database · checked Sep 20, 2026
23	Continual Energy INC	Indirect evidence	Toronto, CanadaHQ checked Sep 20, 2026	51-200	55 contacts →
	Indirect evidence “The team at Continual Energy Inc.” Source: RevenueBase Database · checked Sep 20, 2026
24	Nutemp Mechanical Systems LTD	Strong evidence	Mississauga, ON, CanadaHQ checked Sep 20, 2026	51-200	55 contacts →
	Strong evidence “Nutemp Mechanical Systems LTD is a leading comprehensive mechanical heating, ventilation, plumbing, air conditioning and cooling (HVAC/R) contractor.” Source: RevenueBase Database · checked Sep 20, 2026
25	CES Group	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 20, 2026	51-200	54 contacts →
	Indirect evidence “CES Group is C.E.S Engineering Ltd.” Source: RevenueBase Database · checked Sep 20, 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: hvac system optimization 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 hvac system optimization firms.
Partial evidence: Its own public description names part of hvac system optimization firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac system optimization 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 782 hvac system optimization firms based in Canada

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Hvac system optimization firms based in Canada at a glance

As of Sep 20, 2026

41.6%Verified-email coverage

11.1Average contacts per company

1-10Median size (employees)

8.8%Largest-city concentration · Toronto

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

391

11-50

266

51-200

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 782 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 hvac system optimization 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 Canada whose own description of what they do matches “hvac system optimization 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 hvac system optimization 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 hvac system optimization firms, 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, 3,624 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 20, 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.

Hvac system optimization firms 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 hvac system optimization 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 hvac system optimization firms are there based in Canada?

RevenueBase identified 782 hvac system optimization firms 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?

HTS Engineering, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most hvac system optimization firms?

Toronto leads with 69 headquartered companies, followed by Mississauga (40) and Calgary (38).

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 3,624 verified decision-maker contacts tracked across these 782 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 20, 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.