Plumbers in Thunder Bay
17 plumbers in Thunder Bay with multi-platform trust scores.
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Who is the best plumber in Thunder Bay, Ontario?
The highest-scoring plumbers in Thunder Bay on ProScore are Reliance Heating, Air Conditioning & Plumbing (80/100), Craig Plumbing Centre (73/100) and B. Gibson Mechanical (72/100). ProScore has scored 17 plumbers in Thunder Bay across 10+ data sources and 20+ trust signals. 5 of the 17 are Trusted-tier (70+) or higher.
Star ratings alone do not separate them: 8 of the 17 average 4.5 stars or higher on Google, but only 5 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 between October 13, 2026 and October 24, 2026.
Which plumbers in Thunder Bay score highest?
All 17 scored plumbers in Thunder Bay, ranked by ProScore.
ProScore scores 17 plumbers in Thunder Bay, and their average score is 62 out of 100. 5 of them reach the Trusted threshold of 70 or higher. 8 are registered with WSIB and 4 hold a TSSA licence. 17 have Google reviews on file — 2,048 reviews in total, and 6 carry a Better Business Bureau rating. Across Ontario, 40% of the plumbers ProScore has scored reach the Trusted threshold; at 29%, Thunder Bay is below the provincial rate.
Reliance Heating, Air Conditioning & Plumbing is a plumbing contractor in Thunder Bay operating 24 hours a day, seven days a week, available by appointment with on-site service.
Reliance Heating, Air Conditioning & Plumbing ranks 1st of the 17 plumbers ProScore scores in Thunder Bay, holding a ProScore of 80 out of 100 (Trusted tier). Its score draws on 1,618 Google reviews averaging 4.6 out of 5 and a Better Business Bureau rating of A+.
Craig Plumbing Centre provides plumbing repair work in Thunder Bay, Ontario, and accepts credit cards and tap payments. The location has a wheelchair-accessible entrance and is open six days a week.
Craig Plumbing Centre ranks 2nd of the 17 plumbers ProScore scores in Thunder Bay, holding a ProScore of 73 out of 100 (Trusted tier). Its score draws on 49 Google reviews averaging 4.0 out of 5 and a Better Business Bureau rating of A+. Public records show it is registered with WSIB.
B. Gibson Mechanical operates 24 hours a day, seven days a week in Thunder Bay and handles plumbing repair, renovation, and custom installation work.
B. Gibson Mechanical ranks 3rd of the 17 plumbers ProScore scores in Thunder Bay, holding a ProScore of 72 out of 100 (Trusted tier). Its score draws on 52 Google reviews averaging 4.2 out of 5. Public records show it is registered with WSIB.
Clow Darling Limited is a plumbing contractor based in Thunder Bay that handles repair work on site, operates six days a week, and accepts credit and tap payments.
The ProScore for Clow Darling Limited draws on 72 Google reviews averaging 4.2 out of 5. Public records show Clow Darling Limited is registered with WSIB and licensed by the TSSA.
The ProScore for NWO Well Services Ltd draws on 20 Google reviews averaging 5.0 out of 5.
Superior Water Solutions is a plumbing contractor in Thunder Bay, Ontario, operating seven days a week.
The ProScore for Superior Water Solutions draws on 13 Google reviews averaging 5.0 out of 5.
The ProScore for Aqua North Plumbing & Heating draws on 11 Google reviews averaging 5.0 out of 5. Public records show Aqua North Plumbing & Heating is registered with WSIB and licensed by the TSSA.
Bud's Thunder Bay Pressure Clean Ltd is a plumbing service operating 24 hours a day, seven days a week in Thunder Bay, Ontario.
The ProScore for Bud's Thunder Bay Pressure Clean Ltd draws on 11 Google reviews averaging 5.0 out of 5.
The ProScore for A Villeneuve Mechanical Ltd draws on 36 Google reviews averaging 4.7 out of 5. Public records show A Villeneuve Mechanical Ltd is registered with WSIB and licensed by the TSSA.
Open 24/7, Thermal Mechanical Systems is a plumber based in Thunder Bay with wheelchair-accessible parking.
The ProScore for Thermal Mechanical Systems Inc. draws on 22 Google reviews averaging 3.7 out of 5. Public records show Thermal Mechanical Systems Inc. is licensed by the TSSA.
The ProScore for Robert's Plumbing & Sheet Metal Co draws on 115 Google reviews averaging 3.9 out of 5 and a Better Business Bureau rating of A+.
The ProScore for Adept Plumbing & Mechanical draws on 10 Google reviews averaging 4.1 out of 5 and a Better Business Bureau rating of A+.
MJ Pipeline Solutions is a plumbing repair business based in Thunder Bay, Ontario, open on weekdays.
The ProScore for MJ Pipeline Solutions draws on 1 Google review averaging 5.0 out of 5. Public records show MJ Pipeline Solutions is registered with WSIB.
Elite Plumbing Solutions Inc handles repair work for plumbing customers in Thunder Bay and accepts credit card payments.
The ProScore for Elite Plumbing Solutions Inc draws on 4 Google reviews averaging 5.0 out of 5 and a Better Business Bureau rating of A+. Public records show Elite Plumbing Solutions Inc is registered with WSIB.
The ProScore for Dell Mechanical Contracting draws on 1 Google review averaging 1.0 out of 5.
The ProScore for Scharf Mechanical Ltd draws on 4 Google reviews averaging 4.0 out of 5 and a Better Business Bureau rating of A+. Public records show Scharf Mechanical Ltd is registered with WSIB.
Open 24 hours, seven days a week, Axel's Water & Plumbing Centre is a plumber based in Thunder Bay that handles repair work and accepts credit cards and tap payments.
The ProScore for Axel's Water & Plumbing Centre draws on 9 Google reviews averaging 3.3 out of 5.
How is a plumber's ProScore calculated?
Every plumber in Thunder Bay 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 Thunder Bay?
What else should I check before hiring plumbers in Thunder Bay?
Frequently Asked Questions
Who is the best plumber in Thunder Bay?
Reliance Heating, Air Conditioning & Plumbing has the highest ProScore (80/100) among 17 plumbers in Thunder Bay, 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 Thunder Bay?
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 Thunder Bay, 0 plumbers hold Elite-tier ProScores (81+), 5 are Trusted-tier (70+), and 10 are Good-tier (54+).
Are plumbers in Thunder Bay 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 17 plumbers in Thunder Bay by ProScore, 8 are registered with WSIB according to ProScore’s records.
How many plumbers has ProScore scored in Thunder Bay?
ProScore has scored 17 plumbers in Thunder Bay, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Trust scores last computed between October 13, 2026 and October 24, 2026.
What's the ProScore distribution among plumbers in Thunder Bay?
Among 17 plumbers in Thunder Bay, Ontario: 0 are Elite-tier (81+), 5 are Trusted-tier (70+), and 10 are Good-tier (54+). Together they average a ProScore of 62/100, with Reliance Heating, Air Conditioning & Plumbing leading at 80/100.
How do plumbers in Thunder Bay compare with Ontario as a whole?
29% of the plumbers ProScore has scored in Thunder Bay reach the Trusted tier (70+), against 40% across Ontario as a whole, so Thunder Bay is below the provincial rate.
Other trades in Thunder Bay
Other trades with a ProScore page in Thunder Bay, with the number of scored pros in each.