Company lists · Data refreshed September 2026

Top 25 Plant maintenance contractors based in Canada

Name: Plant 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 199 companies tracked

RevenueBase identified 199 company matches for plant maintenance contractors associated with Canada as of September 2026 and tracks 1,848 professional contacts across them, including 542 with verified work emails. Calgary is the largest hub.

This list covers company matches for plant maintenance contractors associated with Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

199Companies

1,848Contacts tracked

542Verified emails

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

The 25 largest plant maintenance contractors based in Canada

Ranked by team size

Top 25 of 199 company matches for plant maintenance contractors based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	OTS LTD	Exact match	Sydney, NS, CanadaHQ recorded Sep 17, 2026	201-500	142 contacts →
	Exact match “OUR COMPANY OTS is a leader in the industrial service industry, specializing in Pre-Commissioning, Commissioning and Start-Up services and Operations and Maintenance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Team Group	Exact match	Aurora, ON, CanadaHQ recorded Sep 17, 2026	1,001-5,000	137 contacts →
	Exact match “TEAM Group is a self-performing provider of industrial cleaning, integrated facility management, technical cleaning, facility maintenance, and specialized industrial services…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Groupe PMI	Exact match	Sherbrooke, QC, CanadaHQ recorded Sep 17, 2026	201-500	113 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	STI Maintenance	Exact match	Jonquière, QC, CanadaHQ recorded Sep 17, 2026	51-200	94 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	EPM Mecanic	Exact match	Laval, QC, CanadaHQ recorded Sep 17, 2026	51-200	67 contacts →
	Exact match “Les origines d’EPM Mecanic remontent à 1978, alors sous le nom d’E.P.M.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	PSL Patrick Sprack LTD	Exact match	Sudbury, ON, CanadaHQ recorded Sep 17, 2026	51-200	51 contacts →
	Exact match “PSL is one of the fastest growing mechanical service providers in Northern Ontario.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	COGEP	Exact match	Quebec Canada, CanadaHQ recorded Sep 17, 2026	11-50	51 contacts →
	Exact match “About COGEP, Intelligent Maintenance, Simplified COGEP partners with maintenance and operations leaders in complex industrial environments.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Uptime	Exact match	Surrey, BC, CanadaHQ recorded Sep 17, 2026	51-200	48 contacts →
	Exact match “INSTALL.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Mader Group Canada	Exact match	Calgary, AB, CanadaHQ recorded Sep 17, 2026	51-200	36 contacts →
	Exact match “Mader are heavy equipment maintenance experts delivering quality repairs, preventative maintenance and expert diagnostics.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Neutron Factory Works INC	Exact match	Delta, BC, CanadaHQ recorded Sep 17, 2026	11-50	35 contacts →
	Exact match “At Neutron we specialize in ensuring your production lines run uninterrupted.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Delta Valley Services LTD	Exact match	Edmonton, CanadaHQ recorded Sep 17, 2026	201-500	34 contacts →
	Exact match “Delta Valley actively pursues small to large contracts with a demand for neat, orderly, and prolific landscape.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Mr. MOW IT ALL	Exact match	Toronto, CanadaHQ recorded Sep 17, 2026	51-200	33 contacts →
	Exact match “Mr.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Premier Landscaping INC	Exact match	Surrey, BC, CanadaHQ recorded Sep 17, 2026	51-200	32 contacts →
	Exact match “Premier provides strategic annual grounds & landscape maintenance programs for large Commercial, Industrial, Retail & Educational sites.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Mécanique Industrielle Fortier ET Fils Miff	Exact match	La Prairie, QC, CanadaHQ recorded Sep 17, 2026	51-200	24 contacts →
	Exact match “Mécanique Industrielle Fortier et Fils inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Welldone Mechanical Services	Exact match	Regina, SK, CanadaHQ recorded Sep 17, 2026	11-50	23 contacts →
	Exact match “Welldone Mechanical Services: Delivering Excellence in HVAC Solutions Since 1965 As Saskatchewan's premier HVAC solutions provider, Welldone Mechanical Services combines nearly 60…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	LOK Energy Services INC	Exact match	Calgary, AB, CanadaHQ recorded Sep 17, 2026	51-200	23 contacts →
	Exact match “Since 2001, LOK Energy Services specializes in field maintenance services for critical rotating machinery including steam and gas turbines, generators, and peripheral systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Facility Network	Exact match	Milton, ON, CanadaHQ recorded Sep 17, 2026	501-1,000	22 contacts →
	Exact match “The Facility Network Advantage At Facility Network, our commitment to success drives everything we do.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Lisi Services	Exact match	Vaughan, ON, CanadaHQ recorded Sep 17, 2026	11-50	21 contacts →
	Exact match “Keeping your mechanical systems flowing is what Lisi does best, and since 1979, we have been doing just that.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Cross Canada Millwright LTD	Exact match	Nisku, AB, CanadaHQ recorded Sep 17, 2026	11-50	19 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Quality Millwright	Exact match	Edmonton, AB, CanadaHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “Alberta based company, proven to be a reputable and highly competent industrial services provider.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Task Engineering LTD	Exact match	Campbell River, CanadaHQ recorded Sep 17, 2026	51-200	17 contacts →
	Exact match “Task Engineering's core business is providing management assistance with experienced and stable management people to support our client’s teams.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	FLM Pro-Mécanique INC	Exact match	St-hyacinthe, QC, CanadaHQ recorded Sep 17, 2026	11-50	15 contacts →
	Exact match “La société se spécialise dans le service de maintenance industrielle.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Lawn Troopers INC	Exact match	Caledon, CanadaHQ recorded Sep 17, 2026	51-200	15 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Ammco INC	Exact match	Montreal, QC, CanadaHQ recorded Sep 17, 2026	1-10	14 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Clintar Commercial Outdoor Services - Ottawa	Exact match	Ottawa, ON, CanadaHQ recorded Sep 17, 2026	51-200	12 contacts →
	Exact match “Clintar Commercial Outdoor Services of Ottawa is a premier provider of professional landscape management services for commercial, corporate and government properties in the…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “plant maintenance contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 199 plant maintenance contractors based in Canada

See the full list, filter by size, metro and specialty, and access 542 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Plant maintenance contractors based in Canada at a glance

As of Sep 17, 2026

29.3%Verified-email coverage

9.3Average contacts per company

11-50Median size (employees)

6.5%Largest-city concentration · Calgary

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

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 199 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Canada whose business descriptions match “plant maintenance contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 542 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “plant maintenance contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many plant maintenance contractors are there based in Canada?

RevenueBase identified 199 company matches for plant maintenance contractors associated with Canada as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

OTS LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most plant maintenance contractors?

Calgary leads with 13 company records, followed by Edmonton (9) and Toronto (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 542 professional contacts with verified work emails tracked across these 199 companies; direct dials are available where recorded.

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 199 plant maintenance contractors based in Canada. Start with a free account, no credit card.

Download this list →

Related lists

Plant maintenance contractors by geography

Browse the directory

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 SmartSearch, 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.