Plumbers in Oshawa
22 plumbers in Oshawa with multi-platform trust scores.
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Who is the best plumber in Oshawa, Ontario?
The highest-scoring plumbers in Oshawa on ProScore are Vaillancourt Plumbing & Drains (88/100), PR Plumbing (85/100) and Caldwell Plumbing Oshawa (82/100). ProScore has scored 22 plumbers in Oshawa across 10+ data sources and 20+ trust signals. 11 of the 22 are Trusted-tier (70+) or higher.
Star ratings alone do not separate them: 19 of the 22 average 4.5 stars or higher on Google, but only 11 reach Trusted (70+). ProScore also weighs government licensing where it applies, WSIB coverage, ratings on other platforms and what customers say in their reviews.
Trust scores last computed October 13, 2026.
Which plumbers in Oshawa score highest?
All 22 scored plumbers in Oshawa, ranked by ProScore.
ProScore scores 22 plumbers in Oshawa, and their average score is 66 out of 100. 11 of them reach the Trusted threshold of 70 or higher. 7 are registered with WSIB and 2 hold a TSSA licence. 22 have Google reviews on file — 2,706 reviews in total, and 13 carry a Better Business Bureau rating. Across Ontario, 40% of the plumbers ProScore has scored reach the Trusted threshold; at 50%, Oshawa is above the provincial rate.
Vaillancourt Plumbing & Drains handles repair work in Oshawa, available 24/7. Office staff and technicians alike are responsive and attentive from booking through follow-up, and work is completed efficiently and cleanly. Online estimates are available, and the business accepts credit cards.
Vaillancourt Plumbing & Drains ranks 1st of the 22 plumbers ProScore scores in Oshawa, holding a ProScore of 88 out of 100 (Elite tier). Its score draws on 1,377 Google reviews averaging 4.9 out of 5, 358 reviews on other major review platforms and a Better Business Bureau rating of A+. Public records show it is registered with WSIB and licensed by the TSSA.
PR Plumbing is a plumber in Oshawa offering repair work and online estimates, open 24 hours, seven days a week.
PR Plumbing ranks 2nd of the 22 plumbers ProScore scores in Oshawa, holding a ProScore of 85 out of 100 (Elite tier). Its score draws on 405 Google reviews averaging 4.8 out of 5 and a Better Business Bureau rating of A+. Public records show it is registered with WSIB.
Caldwell Plumbing Oshawa is a plumbing repair contractor operating 24 hours, seven days a week in Oshawa, Ontario.
Caldwell Plumbing Oshawa ranks 3rd of the 22 plumbers ProScore scores in Oshawa, holding a ProScore of 82 out of 100 (Elite tier). Its score draws on 34 Google reviews averaging 4.8 out of 5, 170 reviews on other major review platforms and a Better Business Bureau rating of A+.
The ProScore for Bill Clarke Plumbing & Heating draws on 74 Google reviews averaging 4.5 out of 5 and a Better Business Bureau rating of A+. Public records show Bill Clarke Plumbing & Heating is licensed by the TSSA.
Throne Plumbing & Gas Ltd operates on weekdays and handles repair work on site in Oshawa, accepting credit card payments.
The ProScore for Throne Plumbing & Gas Ltd draws on 35 Google reviews averaging 4.9 out of 5 and 16 reviews on other major review platforms.
Call the Plumbing Doctor Inc. & Call the Foundation Doctor Inc. is a plumber in Oshawa that handles repair work on site and operates 24 hours a day, seven days a week, accepting credit cards.
The ProScore for Call the Plumbing Doctor Inc. & Call the Foundation Doctor Inc. draws on 183 Google reviews averaging 4.8 out of 5.
Hayes Plumbing & Bathroom Renovations is a plumber in Oshawa available 24 hours, seven days a week, offering repair work and accepting credit cards; the business has on-site parking and wheelchair-accessible parking.
The ProScore for Hayes Plumbing & Bathroom Renovations draws on 153 Google reviews averaging 4.3 out of 5 and a Better Business Bureau rating of A+.
True-Tech Plumbing Services handles plumbing repair work in Oshawa and operates on site 24 hours a day, seven days a week.
The ProScore for True-Tech Plumbing Services draws on 44 Google reviews averaging 5.0 out of 5.
Superior Plumbing & Heating of Oshawa operates 24 hours a day, seven days a week and handles plumbing repairs on site in the Oshawa area.
The ProScore for Superior Plumbing & Heating of Oshawa draws on 48 Google reviews averaging 5.0 out of 5.
Dan Gibson Plumber provides repair plumbing services in Oshawa and operates seven days a week, accepting credit card payments.
The ProScore for Dan Gibson Plumber draws on 40 Google reviews averaging 5.0 out of 5.
The ProScore for Pioneer Plumbing and Heating draws on 16 Google reviews averaging 5.0 out of 5 and 49 reviews on other major review platforms.
The ProScore for Central Drain Service Inc. draws on 34 Google reviews averaging 4.9 out of 5 and a Better Business Bureau rating of A+. Public records show Central Drain Service Inc. is registered with WSIB.
The ProScore for Plumbers Edge Inc. draws on 19 Google reviews averaging 4.7 out of 5 and a Better Business Bureau rating of A+. Public records show Plumbers Edge Inc. is registered with WSIB.
CDP Plumbing of Oshawa provides plumbing services in Oshawa and operates six days a week.
The ProScore for CDP Plumbing of Oshawa draws on 151 Google reviews averaging 5.0 out of 5.
Free Flo Plumbing LTD operates 24 hours a day, seven days a week in Oshawa.
The ProScore for Free Flo Plumbing LTD. draws on 55 Google reviews averaging 5.0 out of 5.
The ProScore for ProFlow Plumbing Co. draws on 10 Google reviews averaging 5.0 out of 5 and a Better Business Bureau rating of A+.
Open 24/7, Oshawa Plumbing and Sewer is a plumbing contractor based in Oshawa, Ontario.
The ProScore for Oshawa Plumbing and Sewer draws on 13 Google reviews averaging 5.0 out of 5.
Lundy Plumbing & Heating is a plumbing contractor based in Oshawa and operates during weekday hours.
The ProScore for Lundy Plumbing & Heating draws on 2 Google reviews averaging 5.0 out of 5 and a Better Business Bureau rating of A+.
The ProScore for King Street Plumbing Services Inc. draws on 1 Google review averaging 5.0 out of 5 and a Better Business Bureau rating of A+. Public records show King Street Plumbing Services Inc. is registered with WSIB.
The ProScore for Renmar Services draws on 7 Google reviews averaging 3.3 out of 5 and a Better Business Bureau rating of A+. Public records show Renmar Services is registered with WSIB.
The ProScore for Titan Plumbing draws on 4 Google reviews averaging 4.0 out of 5 and a Better Business Bureau rating of A+. Public records show Titan Plumbing is registered with WSIB.
The ProScore for Goodman W D Plumbing Limited draws on 1 Google review averaging 5.0 out of 5 and a Better Business Bureau rating of A+.
How is a plumber's ProScore calculated?
Every plumber in Oshawa is evaluated across four pillars: Reputation (ratings across multiple platforms), Verification (government licensing where it applies and WSIB), Transparency (online presence and profile completeness), and Sentiment (AI analysis of customer reviews). The result is a ProScore from 0 to 100.
Read the full methodology →Who are the top 3 plumbers in Oshawa?
Browse all plumbers in Oshawa →What else should I check before hiring plumbers in Oshawa?
Frequently Asked Questions
Who is the best plumber in Oshawa?
Vaillancourt Plumbing & Drains has the highest ProScore (88/100) among 22 plumbers in Oshawa, Ontario. Rankings are based on ProScore, which evaluates ratings, government licensing where it applies, WSIB coverage, and AI-analyzed customer sentiment.
How do I find a trustworthy plumber in Oshawa?
Look for plumbers with verified active WSIB coverage, and consistent ratings across multiple platforms. ProScore aggregates these signals into a single score from 0-100. In Oshawa, 3 plumbers hold Elite-tier ProScores (81+), 8 are Trusted-tier (70+), and 6 are Good-tier (54+).
Are plumbers in Oshawa licensed?
Yes, the person doing the work has to be. Plumbing is a compulsory trade in Ontario: a plumber needs a Certificate of Qualification, or must be a registered apprentice, and you can check either on the Skilled Trades Ontario public register. Of the top 22 plumbers in Oshawa by ProScore, 7 are registered with WSIB according to ProScore’s records.
How many plumbers has ProScore scored in Oshawa?
ProScore has scored 22 plumbers in Oshawa, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Trust scores last computed October 13, 2026.
What's the ProScore distribution among plumbers in Oshawa?
Among 22 plumbers in Oshawa, Ontario: 3 are Elite-tier (81+), 8 are Trusted-tier (70+), and 6 are Good-tier (54+). Together they average a ProScore of 66/100, with Vaillancourt Plumbing & Drains leading at 88/100.
How do plumbers in Oshawa compare with Ontario as a whole?
50% of the plumbers ProScore has scored in Oshawa reach the Trusted tier (70+), against 40% across Ontario as a whole, so Oshawa is above the provincial rate.
Plumbers near Oshawa
The nearest Ontario cities with a ProScore page for this trade — a pro based nearby may cover your area.
Other trades in Oshawa
Other trades with a ProScore page in Oshawa, with the number of scored pros in each.