Company lists · Data refreshed September 2026

Top 25 Preventive maintenance contractors based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 282 companies tracked

RevenueBase identified 282 preventive maintenance contractors headquartered in Canada as of September 2026 and tracks 3,652 professional contacts across them, including 1,885 with verified work emails. Toronto is the largest hub.

This list covers preventive maintenance contractors 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 17, 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 17, 2026 86% judged on-target in blind review

282Companies

3,652Contacts tracked

1,885Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest preventive maintenance contractors based in Canada

Ranked by team size

Top 25 of 282 preventive maintenance contractors based in Canada, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to preventive maintenance contractors: 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	Ainsworth INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 17, 2026	1,001-5,000	1,405 contacts →
	Indirect evidence “Our customers depend on their buildings, industrial assets, processes, and energy management, to help them meet competitive challenges.” Source: RevenueBase Database · checked Sep 17, 2026
2	Gateway Mechanical Services	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 17, 2026	201-500	208 contacts →
	Indirect 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 17, 2026
3	STI Maintenance	Partial evidence	Jonquière, QC, CanadaHQ checked Sep 17, 2026	51-200	94 contacts →
	Partial evidence “For over 30 years, the team of more than 95 professionals at STI Maintenance has been providing maintenance management action plans to optimize your equipment and installations.” Source: RevenueBase Database · checked Sep 17, 2026
4	EPM Mecanic	Indirect evidence	Laval, QC, CanadaHQ checked Sep 17, 2026	51-200	67 contacts →
	Indirect evidence “Les origines d’EPM Mecanic remontent à 1978, alors sous le nom d’E.P.M.” Source: RevenueBase Database · checked Sep 17, 2026
5	GNR Corbus	Indirect evidence	Sherbrooke, QC, CanadaHQ checked Sep 17, 2026	201-500	58 contacts →
	Indirect evidence “Que ce soit en climatisation, en ventilation, en réfrigération, en congélation, en plomberie, en chauffage ou pour les procédés de gaz naturel, nous avons un technicien qualifié…” Source: RevenueBase Database · checked Sep 17, 2026
6	PSL Patrick Sprack LTD	Indirect evidence	Sudbury, ON, CanadaHQ checked Sep 17, 2026	51-200	51 contacts →
	Indirect evidence “PSL is one of the fastest growing mechanical service providers in Northern Ontario.” Source: RevenueBase Database · checked Sep 17, 2026
7	Uptime	Indirect evidence	Surrey, BC, CanadaHQ checked Sep 17, 2026	51-200	48 contacts →
	Indirect evidence “INSTALL.” Source: RevenueBase Database · checked Sep 17, 2026
8	Major Refrigeration LTD	Indirect evidence	Grimsby, ON, CanadaHQ checked Sep 17, 2026	51-200	43 contacts →
	Indirect evidence “Our Mission:"Major Refrigeration strives to provide the best quality service in a safe, efficient manner at all times.” Source: RevenueBase Database · checked Sep 17, 2026
9	Speico INC	Indirect evidence	Lasalle, QC, CanadaHQ checked Sep 17, 2026	201-500	38 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
10	NRG Management	Indirect evidence	Winnipeg, MB, CanadaHQ checked Sep 17, 2026	51-200	36 contacts →
	Indirect evidence “Since 1993 the NRG Management team have provided commercial, industrial and institutional clients with a full range of complete energy management systems, bringing comfort…” Source: RevenueBase Database · checked Sep 17, 2026
11	Mader Group Canada	Partial evidence	Calgary, AB, CanadaHQ checked Sep 17, 2026	51-200	36 contacts →
	Partial evidence “Mader are heavy equipment maintenance experts delivering quality repairs, preventative maintenance and expert diagnostics.” Source: RevenueBase Database · checked Sep 17, 2026
12	Neutron Factory Works INC	Indirect evidence	Delta, BC, CanadaHQ checked Sep 17, 2026	11-50	35 contacts →
	Indirect evidence “At Neutron we specialize in ensuring your production lines run uninterrupted.” Source: RevenueBase Database · checked Sep 17, 2026
13	Neve Refrigeration INC Groupe Neve	Indirect evidence	Longueuil, QC, CanadaHQ checked Sep 17, 2026	11-50	34 contacts →
	Indirect evidence “Nous somme une entreprise qui œuvre dans le domaine de la climatisation, réfrigération, ventilation, plomberie, combustion commercial et industrielle.” Source: RevenueBase Database · checked Sep 17, 2026
14	Icom Mechanical Solutions	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 17, 2026	51-200	30 contacts →
	Indirect evidence “Mechanical systems are critical to building performance-and when they fail, operations, comfort, and costs are all impacted.” Source: RevenueBase Database · checked Sep 17, 2026
15	EDL Building Solutions	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 17, 2026	51-200	30 contacts →
	Indirect evidence “EDL Building Solutions gives commercial building owners and facility managers peace of mind through reliable, comfortable, and efficient facilities.” Source: RevenueBase Database · checked Sep 17, 2026
16	Certified Building Systems	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 17, 2026	51-200	24 contacts →
	Indirect evidence “Certified Building Systems is a multi-faceted, comprehensive mechanical organization located in Mississauga, ON.” Source: RevenueBase Database · checked Sep 17, 2026
17	Pacific West Mechanical	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 17, 2026	11-50	24 contacts →
	Indirect evidence “Pacific West Mechanical (est.” Source: RevenueBase Database · checked Sep 17, 2026
18	Welldone Mechanical Services	Indirect evidence	Regina, SK, CanadaHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “Welldone Mechanical Services: Delivering Excellence in HVAC Solutions Since 1965 As Saskatchewan's premier HVAC solutions provider, Welldone Mechanical Services combines nearly 60…” Source: RevenueBase Database · checked Sep 17, 2026
19	LOK Energy Services INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 17, 2026	51-200	23 contacts →
	Partial evidence “Since 2001, LOK Energy Services specializes in field maintenance services for critical rotating machinery including steam and gas turbines, generators, and peripheral systems.” Source: RevenueBase Database · checked Sep 17, 2026
20	Culliton	Indirect evidence	Stratford, ON, CanadaHQ checked Sep 17, 2026	51-200	22 contacts →
	Indirect evidence “At CULLITON, we know that you want building systems that work.” Source: RevenueBase Database · checked Sep 17, 2026
21	Facility Network	Indirect evidence	Milton, ON, CanadaHQ checked Sep 17, 2026	501-1,000	22 contacts →
	Indirect evidence “The Facility Network Advantage At Facility Network, our commitment to success drives everything we do.” Source: RevenueBase Database · checked Sep 17, 2026
22	AIR West Mechanical	Indirect evidence	Cochrane, AB, CanadaHQ checked Sep 17, 2026	51-200	22 contacts →
	Indirect evidence “At Air West Mechanical, we’re dedicated to keeping our community comfortable year-round.” Source: RevenueBase Database · checked Sep 17, 2026
23	Dael Thermal Group INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 17, 2026	51-200	21 contacts →
	Indirect evidence “Complete industrial and commercial solutions: • Combustion • Refrigeration • Chillers • HVAC • Plumbing • Electrical • Turn-key Installations IMMEDIATE SERVICE.” Source: RevenueBase Database · checked Sep 17, 2026
24	Springbank Mechanical Systems LTD	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 17, 2026	51-200	21 contacts →
	Indirect evidence “Springbank Mechanical Systems Limited Since our inception in 1990, Springbank Mechanical Systems has been providing high quality, 24-hour HVAC and refrigeration services to the…” Source: RevenueBase Database · checked Sep 17, 2026
25	Lisi Services	Indirect evidence	Vaughan, ON, CanadaHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence “Keeping your mechanical systems flowing is what Lisi does best, and since 1979, we have been doing just that.” Source: RevenueBase Database · checked Sep 17, 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: preventive maintenance contractors. 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 preventive maintenance contractors.
Partial evidence: Its own public description names part of preventive maintenance contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name preventive maintenance contractors. 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 282 preventive maintenance contractors based in Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,885 reachable decision-makers.

Free signup · no credit card

View the full list →

Preventive maintenance contractors based in Canada at a glance

As of Sep 17, 2026

51.6%Verified-email coverage

13.0Average contacts per company

11-50Median size (employees)

7.4%Largest-city concentration · Toronto

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

131

11-50

103

51-200

201-500

501-1,000

1,001-5,000

10001+

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 282 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 preventive maintenance contractors, 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 “preventive maintenance contractors”. 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 preventive maintenance contractors), 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 preventive maintenance contractors, 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, 1,885 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 17, 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 preventive maintenance contractors, 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 preventive maintenance contractors are there based in Canada?

RevenueBase identified 282 preventive maintenance contractors 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?

Ainsworth INC, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most preventive maintenance contractors?

Toronto leads with 21 headquartered companies, followed by Calgary (20) and Edmonton (14).

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 1,885 verified decision-maker contacts tracked across these 282 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 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 282 preventive maintenance contractors based in Canada. Start with a free account, no credit card.

Download this list →

Related lists

Preventive maintenance contractors by geography

Browse the directory

Browse: Companies home · All Canada lists · All Preventive maintenance contractors lists · New lists

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.