Plumbers in St. Catharines
23 plumbers in St. Catharines with multi-platform trust scores.
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Who is the best plumber in St. Catharines, Ontario?
The most trusted plumber in St. Catharines, Ontario is Mr. Furnace Heating and Air Conditioning, with a ProScore of 78/100. ProScore has scored 23 plumbers in St. Catharines across 10+ data sources and 20+ trust signals. 6 of the 23 are Trusted-tier (70+) or higher.
Trust scores last computed between October 13, 2026 and October 24, 2026.
Which plumbers in St. Catharines score highest?
All 23 scored plumbers in St. Catharines, ranked by ProScore.
ProScore scores 23 plumbers in St. Catharines, and their average score is 56 out of 100. 6 of them reach the Trusted threshold of 70 or higher. 4 hold a TSSA licence. 23 have Google reviews on file — 4,059 reviews in total, and 8 carry a Better Business Bureau rating.
Mr. Furnace Heating and Air Conditioning ranks 1st of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 78 out of 100 (Trusted tier). Its score draws on 2,686 Google reviews averaging 4.8 out of 5. Public records show it is licensed by the TSSA.
Sewer-Man Drain Service St. Catharines ranks 2nd of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 77 out of 100 (Trusted tier). Its score draws on 114 Google reviews averaging 4.8 out of 5 and 38 reviews on other major review platforms.
Go Green Plumbing Ltd ranks 3rd of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 74 out of 100 (Trusted tier). Its score draws on 641 Google reviews averaging 4.9 out of 5, 64 reviews on other major review platforms and a Better Business Bureau rating of A+.
Complete Plumbing ranks 4th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 73 out of 100 (Trusted tier). Its score draws on 210 Google reviews averaging 4.5 out of 5 and a Better Business Bureau rating of A+.
Brian Easton Hvac ranks 5th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 72 out of 100 (Trusted tier). Its score draws on 90 Google reviews averaging 4.5 out of 5.
Canada's Pro Plumbing ranks 6th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 72 out of 100 (Trusted tier). Its score draws on 47 Google reviews averaging 4.8 out of 5.
Superior Plumbing & Heating of St. Catharines ranks 7th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 64 out of 100 (Good tier). Its score draws on 60 Google reviews averaging 4.9 out of 5.
The Super Plumber ranks 8th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 60 out of 100 (Good tier). Its score draws on 39 Google reviews averaging 4.5 out of 5 and 6 reviews on other major review platforms.
Ed's Pipeworks ranks 9th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 58 out of 100 (Good tier). Its score draws on 33 Google reviews averaging 4.6 out of 5. Public records show it is licensed by the TSSA.
Modern Mechanical Plumbing & Heating ranks 10th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 56 out of 100 (Good tier). Its score draws on 18 Google reviews averaging 4.6 out of 5.
Castle Plumbing & Heating Inc. ranks 11th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 54 out of 100 (Good tier). Its score draws on 24 Google reviews averaging 3.8 out of 5 and a Better Business Bureau rating of A+.
MNM Plumbing Niagara Inc ranks 12th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 54 out of 100 (Good tier). Its score draws on 22 Google reviews averaging 4.8 out of 5. Public records show it is licensed by the TSSA.
ACE Plumbing & Heating Corp ranks 13th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 52 out of 100 (Basic tier). Its score draws on 11 Google reviews averaging 5.0 out of 5.
AJ ROOTER ranks 14th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 51 out of 100 (Basic tier). Its score draws on 4 Google reviews averaging 5.0 out of 5 and a Better Business Bureau rating of A+.
Guest Plumbing & HVAC ranks 15th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 49 out of 100 (Basic tier). Its score draws on 1 Google review averaging 5.0 out of 5 and a Better Business Bureau rating of A+.
Super Drain St.Catharines ranks 16th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 49 out of 100 (Basic tier). Its score draws on 11 Google reviews averaging 4.6 out of 5.
Birnie Plumbing and Drains of St. Catharines ranks 17th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 48 out of 100 (Basic tier). Its score draws on 14 Google reviews averaging 4.4 out of 5.
Jamie Janzen Plumbing & Heating Inc ranks 18th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 47 out of 100 (Basic tier). Its score draws on 24 Google reviews averaging 4.0 out of 5.
Amf Plumbing Services ranks 19th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 45 out of 100 (Basic tier). Its score draws on 2 Google reviews averaging 5.0 out of 5 and a Better Business Bureau rating of A+.
GL Trade Services LTD ranks 20th of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 45 out of 100 (Basic tier). Its score draws on 2 Google reviews averaging 5.0 out of 5.
Radiant Plumbing & Heating ranks 21st of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 43 out of 100 (Basic tier). Its score draws on 4 Google reviews averaging 4.8 out of 5 and a Better Business Bureau rating of A+. Public records show it is licensed by the TSSA.
Royal Flush Kitchen & Baths ranks 22nd of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 36 out of 100 (Basic tier). Its score draws on 1 Google review averaging 5.0 out of 5.
Landolt Plumbing & Htg ranks 23rd of the 23 plumbers ProScore scores in St. Catharines, holding a ProScore of 34 out of 100 (Basic tier). Its score draws on 1 Google review averaging 3.0 out of 5.
Of 23 plumbers in St. Catharines: 0 rated Elite (81+), 6 rated Trusted (70+), and 6 rated Good (54+).
How is a plumber's ProScore calculated?
Every plumber in St. Catharines 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 St. Catharines?
What else should I check before hiring plumbers in St. Catharines?
Frequently Asked Questions
Who is the best plumber in St. Catharines?
Mr. Furnace Heating and Air Conditioning has the highest ProScore (78/100) among 23 plumbers in St. Catharines, 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 St. Catharines?
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 St. Catharines, 0 plumbers hold Elite-tier ProScores (81+), 6 are Trusted-tier (70+), and 6 are Good-tier (54+).
Are plumbers in St. Catharines 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.
How many plumbers has ProScore scored in St. Catharines?
ProScore has scored 23 plumbers in St. Catharines, 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 St. Catharines?
Among 23 plumbers in St. Catharines, Ontario: 0 are Elite-tier (81+), 6 are Trusted-tier (70+), and 6 are Good-tier (54+). The top 23 average a ProScore of 56/100, with Mr. Furnace Heating and Air Conditioning leading at 78/100.
Plumbers near St. Catharines
The nearest Ontario cities with a ProScore page for this trade — a pro based nearby may cover your area.
Other trades in St. Catharines
Other trades with a ProScore page in St. Catharines, with the number of scored pros in each.