Best Plumbers in Hamilton, Ontario
The most trusted plumber in Hamilton, Ontario is Greg's Plumbing and Heating Inc., with a ProScore of 79/100.
The most trusted plumber in Hamilton, Ontario is Greg's Plumbing and Heating Inc., with a ProScore of 79/100. ProScore has verified 44 plumbers in Hamilton, scoring each across 10+ data sources and 20+ trust signals. 5 of the 44 are Trusted-tier (65+) or higher.
Last updated: June 20, 2026 · Data refreshed daily
Of 44 plumbers in Hamilton: 0 rated Elite (80+), 22 rated Trusted (65+), and 13 rated Good (50+).
How ProScore Ranks Plumbers
Every plumber in Hamilton is evaluated across four pillars: Reputation (ratings across multiple platforms), Verification (government licensing 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 →Top Rated Plumbers in Hamilton
Browse all plumbers in Hamilton →Frequently Asked Questions
Who is the best plumber in Hamilton?
Greg's Plumbing and Heating Inc. has the highest ProScore (79/100) among 44 verified plumbers in Hamilton, Ontario. Rankings are based on ProScore, which evaluates ratings, government licensing, WSIB coverage, and AI-analyzed customer sentiment.
How do I find a trustworthy plumber in Hamilton?
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 Hamilton, 0 plumbers hold Elite-tier ProScores (80+), 22 are Trusted-tier (65+), and 13 are Good-tier (50+).
Are plumbers in Hamilton licensed?
Plumbers in Ontario should hold valid business registration and active WSIB workers compensation coverage. ProScore verifies these credentials for every provider. Of the top 5 plumbers in Hamilton by ProScore, 4 carry active WSIB coverage.
How many verified plumbers are in Hamilton?
ProScore has verified and scored 44 plumbers in Hamilton, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Data is refreshed daily.
What's the ProScore distribution among plumbers in Hamilton?
Among 44 verified plumbers in Hamilton, Ontario: 0 are Elite-tier (80+), 22 are Trusted-tier (65+), and 13 are Good-tier (50+). The top 5 average a ProScore of 78/100, with Greg's Plumbing and Heating Inc. leading at 79/100.