Company lists · Data refreshed October 2026

Top 25 Refinery maintenance services based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Oct 22, 2026 99 companies tracked

RevenueBase identified 99 company matches for refinery maintenance services associated with Canada as of October 2026 and tracks 1,637 professional contacts across them, including 306 with verified work emails. Edmonton is the largest hub.

This list covers company matches for refinery maintenance services 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 October 22, 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 Oct 22, 2026 How this list was built

99Companies

1,637Contacts tracked

306Verified emails

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The 25 largest refinery maintenance services based in Canada

Ranked by team size

Top 25 of 99 company matches for refinery maintenance services based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 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	Melloy Industrial Services INC	Exact match	Nisku, AB, CanadaHQ recorded Oct 22, 2026	51-200	211 contacts →
	Exact match “Melloy Industrial is a trusted leader in heavy industrial maintenance, turnarounds, project execution and fabrication services across Canada.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2	Blackstone Industrial Services	Exact match	Sherwood Park, AB, CanadaHQ recorded Oct 22, 2026	201-500	147 contacts →
	Exact match “Blackstone believes that great people make great businesses.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3	OTS LTD	Exact match	Sydney, NS, CanadaHQ recorded Oct 22, 2026	201-500	137 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 · Oct 22, 2026 · View company records in RevenueBase
4	Innovator Industrial Services INC	Exact match	Spruce Grove, AB, CanadaHQ recorded Oct 22, 2026	201-500	100 contacts →
	Exact match “Got questions or are interested in a particular service?” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5	Catalyst Changers INC	Exact match	Sundre, AB, CanadaHQ recorded Oct 22, 2026	51-200	51 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
6	Mader Group Canada	Exact match	Calgary, AB, CanadaHQ recorded Oct 22, 2026	51-200	47 contacts →
	Exact match “Mader are heavy equipment maintenance experts delivering quality repairs, preventative maintenance and expert diagnostics.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7	Arjae Design Solutions LTD	Exact match	Nisku, AB, CanadaHQ recorded Oct 22, 2026	51-200	36 contacts →
	Exact match “We are a leader in unique and creative engineering and fabrication solutions to the Oil & Gas industry by top quality, experienced professionals.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8	Fluordriver	Exact match	Edmonton, AB, CanadaHQ recorded Oct 22, 2026	501-1,000	26 contacts →
	Exact match “Fluor Driver is a recognized leader in plant maintenance, turnarounds, small capital – and particularly safety – across Canada.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9	Boon Energy Services	Exact match	Bonnyville, AB, CanadaHQ recorded Oct 22, 2026	51-200	26 contacts →
	Exact match “Boon Energy is a leading service provider for Wellhead Maintenance, Blasting & Coating, Facility Maintenance and Picker Services with operations in Alberta and NWT.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10	LOK Energy Services INC	Exact match	Calgary, AB, CanadaHQ recorded Oct 22, 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 · Oct 22, 2026 · View company records in RevenueBase
11	TES Group INC	Exact match	Sherwood Park, AB, CanadaHQ recorded Oct 22, 2026	11-50	22 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12	APE Maintenance	Exact match	Fort Mcmurray, AB, CanadaHQ recorded Oct 22, 2026	51-200	20 contacts →
	Exact match “Mechanical contractor” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13	Propak Energy Services	Exact match	Airdrie, AB, CanadaHQ recorded Oct 22, 2026	201-500	14 contacts →
	Exact match “Compression and Power Services Propak provides service for gas compression and power generation equipment, including warranty service, minor and major maintenance, replacement…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14	Sulfur Recovery Engineering	Exact match	Calgary, AB, CanadaHQ recorded Oct 22, 2026	11-50	9 contacts →
	Exact match “Since 1998, Refineries, Gas Plants, and Engineering companies worldwide have cut costs, reduced emissions, and achieved optimal performance of Sulfur Recovery Units with…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15	Can-Ak Industrial Services INC	Exact match	Fort Saskatchewan, AB, CanadaHQ recorded Oct 22, 2026	11-50	9 contacts →
	Exact match “CAN-AK provides the oil flushing and chemical cleaning turnkey services necessary to manage, monitor, and advance all phases of your plant’s equipment reliability objectives.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16	CEG	Exact match	Drayton Valley, AB, CanadaHQ recorded Oct 22, 2026	11-50	9 contacts →
	Exact match “CEG is a full-service mechanical, electrical, instrumentation, and compression company proudly based in Drayton Valley, Alberta.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17	Rushton GAS And OIL Equipment LTD	Exact match	Edmonton, AB, CanadaHQ recorded Oct 22, 2026	51-200	9 contacts →
	Exact match “Rushton Gas and Oil Equipment Ltd specializes in providing engineering, design, fabrication and maintenance of Oil and Gas production plants.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18	Ired Thermal Group LTD	Exact match	Edmonton, AB, CanadaHQ recorded Oct 22, 2026	11-50	8 contacts →
	Exact match “IRED is a service company headquartered in Edmonton, Alberta.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
19	API Industrial Services INC	Exact match	Sturgeon County, AB, CanadaHQ recorded Oct 22, 2026	1-10	8 contacts →
	Exact match “We, API Industrial Services Inc, are a contractor based in the Industrial Heartland of Alberta who specializes in rotating equipment.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20	Compression Technology INC	Exact match	Fort St John, BC, CanadaHQ recorded Oct 22, 2026	11-50	8 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21	ION Engineering INC	Exact match	Edmonton, AB, CanadaHQ recorded Oct 22, 2026	1-10	7 contacts →
	Exact match “Our goal is to become an industry leader by providing a complete cradle to grave approach for the oil and gas sector.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
22	Fuel TEK	Exact match	Dundas, ON, CanadaHQ recorded Oct 22, 2026	11-50	7 contacts →
	Exact match “Fuel Tek provides professional Gas Station Maintenance, Repair & Installation Services to retail gas stations, commercial card locks, marinas and airports across Ontario.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23	Albert's GAS Station Maintenance	Exact match	Cambridge, ON, CanadaHQ recorded Oct 22, 2026	11-50	7 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24	Mersey Marine LTD	Exact match	Liverpool, NS, CanadaHQ recorded Oct 22, 2026	11-50	7 contacts →
	Exact match “Mersey Marine Limited (formerly STENPRO) is located in Liverpool, Nova Scotia.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25	Highmark Oilfield Services	Exact match	Charlie Lake, BC, CanadaHQ recorded Oct 22, 2026	11-50	5 contacts →
	Exact match “Highmark Oilfield Services Ltd.” Recorded in the RevenueBase company graph · Oct 22, 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 “refinery maintenance services”. 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 99 refinery maintenance services based in Canada

See the full list, filter by size, metro and specialty, and access 306 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery maintenance services based in Canada at a glance

As of Oct 22, 2026

18.7%Verified-email coverage

16.5Average contacts per company

11-50Median size (employees)

10.1%Largest-city concentration · Edmonton

Oct 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 99 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 “refinery maintenance services” 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 306 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 October 22, 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 “refinery maintenance services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery maintenance services are there based in Canada?

RevenueBase identified 99 company matches for refinery maintenance services associated with Canada as of October 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?

Melloy Industrial Services INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery maintenance services?

Edmonton leads with 10 company records, followed by Calgary (5) and Nisku (4).

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 306 professional contacts with verified work emails tracked across these 99 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 October 22, 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 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.