Company lists · Data refreshed September 2026

Top 25 Plumbing maintenance contractors based in Canada

Name: Plumbing 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 682 companies tracked

RevenueBase identified 682 plumbing maintenance contractors headquartered in Canada as of September 2026 and tracks 2,873 professional contacts across them, including 544 with verified work emails. Toronto is the largest hub.

This list covers plumbing 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

682Companies

2,873Contacts tracked

544Verified emails

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The 25 largest plumbing maintenance contractors based in Canada

Ranked by team size

Top 25 of 682 plumbing 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 plumbing 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	Roto-Rooter Plumbing & Drain Service	Partial evidence	Toronto, ON, CanadaHQ checked Sep 17, 2026	n/a	154 contacts →
	Partial evidence “Trusted & Recommended since 1935, Roto-Rooter is the largest provider of plumbing and drain cleaning service in North America.” Source: RevenueBase Database · checked Sep 17, 2026
2	Milani Plumbing, Heating, & AIR Conditioning	Partial evidence	Burnaby, BC, CanadaHQ checked Sep 17, 2026	51-200	95 contacts →
	Partial evidence “Milani has been specializing in servicing the plumbing, drainage and heating needs of commercial and residential clients since 1956.” Source: RevenueBase Database · checked Sep 17, 2026
3	LPI Mechanical	Indirect evidence	Brampton, ON, CanadaHQ checked Sep 17, 2026	51-200	67 contacts →
	Indirect evidence “For the last 24 years, LPI Mechanical Inc.” Source: RevenueBase Database · checked Sep 17, 2026
4	Canyon Plumbing And Heating LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 17, 2026	51-200	55 contacts →
	Indirect evidence “With a commitment to superior quality, strong relationships, extensive experience and providing assurance, we’re more than just great plumbers – we’re great partners too.” Source: RevenueBase Database · checked Sep 17, 2026
5	Plomberie Europe	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 17, 2026	51-200	48 contacts →
	Indirect evidence “Plomberie Europe Inc.” Source: RevenueBase Database · checked Sep 17, 2026
6	TPH Plumbing & Heating	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 17, 2026	11-50	40 contacts →
	Partial evidence “Since 1986, we have been providing commercial, industrial and institutional piping, plumbing and heating services to Ottawa and Eastern Ontario.” Source: RevenueBase Database · checked Sep 17, 2026
7	Caon Services INC	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 17, 2026	11-50	37 contacts →
	Indirect evidence “Welcome to Caon Services Inc.” Source: RevenueBase Database · checked Sep 17, 2026
8	Canadian Design & Construction INC CDC	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 17, 2026	51-200	26 contacts →
	Partial evidence “CDC specializes in 24/7 plumbing service, fan coil replacement & mechanical retrofit in the condominium community.” Source: RevenueBase Database · checked Sep 17, 2026
9	Brighter Mechanical LTD	Partial evidence	Burnaby, BC, CanadaHQ checked Sep 17, 2026	51-200	24 contacts →
	Partial evidence “Brighter Mechanical is the leading re-piping contractor in British Columbia.” Source: RevenueBase Database · checked Sep 17, 2026
10	Leader Plumbing & Heating	Partial evidence	Vaughan, ON, CanadaHQ checked Sep 17, 2026	51-200	24 contacts →
	Partial evidence “With a caring and dedicated team, Leader Plumbing and Heating specializes in plumbing and mechanical installations for HiRise, MidRise, LowRise, Custom Home and…” Source: RevenueBase Database · checked Sep 17, 2026
11	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
12	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
13	Haller Mechanical Contractors INC	Partial evidence	Windsor, ON, CanadaHQ checked Sep 17, 2026	51-200	19 contacts →
	Partial evidence “Commercial OR Industrial OR Institutional OR Residential HVAC and Plumbing Specialists • Emergency service is available 24 hours per day 7 days per week CALL 519-254-4635 •…” Source: RevenueBase Database · checked Sep 17, 2026
14	C&c Electrical Mechanical	Indirect evidence	Port Coquitlam, BC, CanadaHQ checked Sep 17, 2026	51-200	19 contacts →
	Indirect evidence “C&C Electrical Mechanical is Metro Vancouver’s leading packaged service provider.” Source: RevenueBase Database · checked Sep 17, 2026
15	Always Plumbing & Heating LTD	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 17, 2026	51-200	18 contacts →
	Partial evidence “No plumbing or heating problem or emergency is ever expected.” Source: RevenueBase Database · checked Sep 17, 2026
16	Transvac Group Of Companies	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 17, 2026	51-200	18 contacts →
	Partial evidence “Environmental and Plumbing Services Plumbing services” Source: RevenueBase Database · checked Sep 17, 2026
17	Alpha Mechanical Contracting LTD	Indirect evidence	Port Coquitlam, BC, CanadaHQ checked Sep 17, 2026	51-200	17 contacts →
	Indirect evidence “Alpha Mechanical Contracting Ltd.(Alpha) is a leading Western Canadian mechanical contracting firm.” Source: RevenueBase Database · checked Sep 17, 2026
18	Mr. Mike's Plumbing	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “Embarking on a mission of care and excellence, our dedicated owner, Mike Brock, founded Mr.” Source: RevenueBase Database · checked Sep 17, 2026
19	Lambert Plumbing & Heating	Partial evidence	Burnaby, BC, CanadaHQ checked Sep 17, 2026	51-200	16 contacts →
	Partial evidence “Your 24/7 Fast, Friendly, Plumbing Experts since 1977.” Source: RevenueBase Database · checked Sep 17, 2026
20	On Time Group	Indirect evidence	Winnipeg, MB, CanadaHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “Welcome to the On Time Group At On Time Group, we believe that the customer comes first.” Source: RevenueBase Database · checked Sep 17, 2026
21	Peel Heating And AIR Conditioning	Indirect evidence	Brampton, ON, CanadaHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
22	Lodder Brothers LTD	Indirect evidence	Guelph, ON, CanadaHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
23	Clow Darling LTD	Strong evidence	Thunder Bay, ON, CanadaHQ checked Sep 17, 2026	51-200	13 contacts →
	Strong evidence “Clow Darling is the largest complete mechanical service contractor in Northwestern Ontario specializing in plumbing, heating, cooling, boilers and piping for the industrial…” Source: RevenueBase Database · checked Sep 17, 2026
24	Brisson & Massie Mechanical	Partial evidence	London, ON, CanadaHQ checked Sep 17, 2026	51-200	13 contacts →
	Partial evidence “Brisson & Massie is a mechanical company specializing in plumbing, heating, and air conditioning, in the multi-unit residential and commercial sectors.” Source: RevenueBase Database · checked Sep 17, 2026
25	Jj's Plumbing	Partial evidence	Maple Ridge, BC, CanadaHQ checked Sep 17, 2026	1-10	13 contacts →
	Partial evidence “LIKE FAMILY… The team at JJ’s Plumbing is committed to supporting you every step of the way.” 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: plumbing 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 plumbing maintenance contractors.
Partial evidence: Its own public description names part of plumbing maintenance contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name plumbing 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 682 plumbing maintenance contractors based in Canada

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Plumbing maintenance contractors based in Canada at a glance

As of Sep 17, 2026

18.9%Verified-email coverage

4.2Average contacts per company

1-10Median size (employees)

6.9%Largest-city concentration · Toronto

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

418

11-50

186

51-200

201-500

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 682 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 plumbing 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 “plumbing 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 plumbing 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 plumbing 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, 544 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.

Plumbing maintenance contractors by metro

Plumbing maintenance contractors in Toronto47
Plumbing maintenance contractors in Calgary45
Plumbing maintenance contractors in Edmonton30
Plumbing maintenance contractors in Montreal25

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 plumbing 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 plumbing maintenance contractors are there based in Canada?

RevenueBase identified 682 plumbing 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?

Roto-Rooter Plumbing & Drain Service, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most plumbing maintenance contractors?

Toronto leads with 47 headquartered companies, followed by Calgary (45) and Edmonton (30).

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 544 verified decision-maker contacts tracked across these 682 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.

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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.