Company lists · Data refreshed September 2026

Top 25 Refinery maintenance companies based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 102 companies tracked

RevenueBase identified 102 refinery maintenance companies headquartered in Canada as of September 2026 and tracks 2,989 professional contacts across them, including 627 with verified work emails. Edmonton is the largest hub.

This list covers refinery maintenance 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 21, 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 21, 2026 86% judged on-target in blind review

102Companies

2,989Contacts tracked

627Verified emails

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

The 25 largest refinery maintenance companies based in Canada

Ranked by team size

Top 25 of 102 refinery maintenance companies based in Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to refinery maintenance 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Flint Corp	Partial evidence	Calgary, AB, CanadaHQ checked Sep 21, 2026	1,001-5,000	635 contacts →
	Partial evidence “FLINT is a leading provider for Maintenance & Turnarounds, Wear Technologies, Fabrication, Modularization & Machining, Facility Construction, Pipeline Installation & Integrity…” Source: RevenueBase Database · checked Sep 21, 2026
2	Melloy Industrial Services INC	Partial evidence	Nisku, AB, CanadaHQ checked Sep 21, 2026	51-200	198 contacts →
	Partial evidence “Melloy Industrial is a trusted leader in heavy industrial maintenance, turnarounds, project execution and fabrication services across Canada.” Source: RevenueBase Database · checked Sep 21, 2026
3	Lorneville	Indirect evidence	Saint John, NB, CanadaHQ checked Sep 21, 2026	501-1,000	187 contacts →
	Indirect evidence “With over 45 years of experience working on major projects for some of North America’s most prominent companies in large industrial sectors, Lorneville is an established leader in…” Source: RevenueBase Database · checked Sep 21, 2026
4	Blackstone Industrial Services	Indirect evidence	Sherwood Park, AB, CanadaHQ checked Sep 21, 2026	201-500	146 contacts →
	Indirect evidence “Blackstone believes that great people make great businesses.” Source: RevenueBase Database · checked Sep 21, 2026
5	OTS LTD	Partial evidence	Sydney, NS, CanadaHQ checked Sep 21, 2026	201-500	142 contacts →
	Partial evidence “OUR COMPANY OTS is a leader in the industrial service industry, specializing in Pre-Commissioning, Commissioning and Start-Up services and Operations and Maintenance.” Source: RevenueBase Database · checked Sep 21, 2026
6	Innovator Industrial Services INC	Indirect evidence	Spruce Grove, AB, CanadaHQ checked Sep 21, 2026	201-500	96 contacts →
	Indirect evidence “Got questions or are interested in a particular service?” Source: RevenueBase Database · checked Sep 21, 2026
7	Fluordriver	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 21, 2026	501-1,000	47 contacts →
	Partial evidence “Fluor Driver is a recognized leader in plant maintenance, turnarounds, small capital – and particularly safety – across Canada.” Source: RevenueBase Database · checked Sep 21, 2026
8	Catalyst Changers INC	Partial evidence	Sundre, AB, CanadaHQ checked Sep 21, 2026	51-200	47 contacts →
	Partial evidence “Catalyst Changers has become a recognized go-to source for the Oil, Gas and Petro-chemical Industry when they need dependable Catalyst Changeover and Shutdown Maintenance Services.” Source: RevenueBase Database · checked Sep 21, 2026
9	Mader Group Canada	Partial evidence	Calgary, AB, CanadaHQ checked Sep 21, 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 21, 2026
10	Arjae Design Solutions LTD	Indirect evidence	Nisku, AB, CanadaHQ checked Sep 21, 2026	51-200	35 contacts →
	Indirect evidence “We are a leader in unique and creative engineering and fabrication solutions to the Oil & Gas industry by top quality, experienced professionals.” Source: RevenueBase Database · checked Sep 21, 2026
11	Terrafirma Resources	Partial evidence	Clearwater County, AB, CanadaHQ checked Sep 21, 2026	51-200	33 contacts →
	Partial evidence “Terrafirma is an Alberta pipeline, facility, mechanical and oilfield maintenance company servicing the oil industry throughout Western Canada.” Source: RevenueBase Database · checked Sep 21, 2026
12	Enhanced Engineering E2 Consulting LTD	Indirect evidence	Lloydminster, AB, CanadaHQ checked Sep 21, 2026	11-50	28 contacts →
	Indirect evidence “Enhanced Engineering (E2 Consulting) Ltd.” Source: RevenueBase Database · checked Sep 21, 2026
13	Boon Energy Services	Partial evidence	Bonnyville, AB, CanadaHQ checked Sep 21, 2026	51-200	23 contacts →
	Partial evidence “Boon Energy is a leading service provider for Wellhead Maintenance, Blasting & Coating, Facility Maintenance and Picker Services with operations in Alberta and NWT.” Source: RevenueBase Database · checked Sep 21, 2026
14	LOK Energy Services INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 21, 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 21, 2026
15	TES Group INC	Partial evidence	Sherwood Park, AB, CanadaHQ checked Sep 21, 2026	11-50	20 contacts →
	Partial evidence “TES Group Inc.(TES) is a unique full-solution provider and one-stop shop for industrial construction, maintenance and technical services for a range of steam, power, and process…” Source: RevenueBase Database · checked Sep 21, 2026
16	RSW Rozen Steelworks	Partial evidence	Acheson, AB, CanadaHQ checked Sep 21, 2026	201-500	20 contacts →
	Partial evidence “RSW specializes in Tailings Management and Plant Maintenance, offering expertise in Pump Barges, Dredges, Floating Modules, Wear Spools, Expansion Barrels, Screens and pipe…” Source: RevenueBase Database · checked Sep 21, 2026
17	Logic NDT Solutions	Partial evidence	Calgary, AB, CanadaHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial evidence “Providing oilfield solutions relating to non-destructive testing, manufacturing, repair, tool storage with inventory management, and preventative maintenance services for our…” Source: RevenueBase Database · checked Sep 21, 2026
18	Sulfur Recovery Engineering	Partial evidence	Calgary, AB, CanadaHQ checked Sep 21, 2026	11-50	10 contacts →
	Partial evidence “Since 1998, Refineries, Gas Plants, and Engineering companies worldwide have cut costs, reduced emissions, and achieved optimal performance of Sulfur Recovery Units with…” Source: RevenueBase Database · checked Sep 21, 2026
19	Sabnar	Partial evidence	Québec, QC, CanadaHQ checked Sep 21, 2026	11-50	10 contacts →
	Partial evidence “SABNAR GROUP LTD has evolved into a well-established and highly reputable company, committed to delivering comprehensive maintenance services for projects within the Energy Sector.” Source: RevenueBase Database · checked Sep 21, 2026
20	Rushton GAS And OIL Equipment LTD	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 21, 2026	51-200	9 contacts →
	Partial evidence “Rushton Gas and Oil Equipment Ltd specializes in providing engineering, design, fabrication and maintenance of Oil and Gas production plants.” Source: RevenueBase Database · checked Sep 21, 2026
21	CEG	Indirect evidence	Drayton Valley, AB, CanadaHQ checked Sep 21, 2026	11-50	8 contacts →
	Indirect evidence “CEG is a full-service mechanical, electrical, instrumentation, and compression company proudly based in Drayton Valley, Alberta.” Source: RevenueBase Database · checked Sep 21, 2026
22	Compression Technology INC	Indirect evidence	Fort St John, BC, CanadaHQ checked Sep 21, 2026	11-50	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
23	ION Engineering INC	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “Our goal is to become an industry leader by providing a complete cradle to grave approach for the oil and gas sector.” Source: RevenueBase Database · checked Sep 21, 2026
24	Albert's GAS Station Maintenance	Partial evidence	Cambridge, ON, CanadaHQ checked Sep 21, 2026	11-50	6 contacts →
	Partial evidence “Since 1997, Albert's Gas Station Maintenance has been a trusted partner for gas stations, card locks, marinas, and private fueling facilities across Southwestern Ontario.” Source: RevenueBase Database · checked Sep 21, 2026
25	Ired Thermal Group LTD	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect evidence “IRED is a service company headquartered in Edmonton, Alberta.” Source: RevenueBase Database · checked Sep 21, 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: refinery maintenance companies. 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 refinery maintenance companies.
Partial evidence: Its own public description names part of refinery maintenance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name refinery maintenance companies. 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 102 refinery maintenance companies based in Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 627 reachable decision-makers.

Free signup · no credit card

View the full list →

Refinery maintenance companies based in Canada at a glance

As of Sep 21, 2026

21.0%Verified-email coverage

29.3Average contacts per company

11-50Median size (employees)

12.7%Largest-city concentration · Edmonton

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 102 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 refinery maintenance 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 “refinery maintenance 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 refinery maintenance 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 refinery maintenance 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, 627 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 21, 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 refinery maintenance 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 refinery maintenance companies are there based in Canada?

RevenueBase identified 102 refinery maintenance 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?

Flint Corp, headquartered in Calgary, tops this list with the largest team on record.

Which city has the most refinery maintenance companies?

Edmonton leads with 13 headquartered companies, followed by Calgary (8) and Nisku (5).

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 627 verified decision-maker contacts tracked across these 102 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 102 refinery maintenance companies based in Canada. Start with a free account, no credit card.

Download this list →

Related lists

Refinery maintenance companies 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 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.