Best HVAC Contractors in Waterloo, Ontario
The most trusted HVAC contractor in Waterloo, Ontario is Delta Air Systems Ltd., with a ProScore of 75/100.
The most trusted HVAC contractor in Waterloo, Ontario is Delta Air Systems Ltd., with a ProScore of 75/100. ProScore has verified 13 HVAC contractors in Waterloo, scoring each across 10+ data sources and 20+ trust signals. 2 of the 13 are Trusted-tier (70+) or higher.
Last updated: May 6, 2026 · Data refreshed daily
Of 13 hvac contractors in Waterloo: 0 rated Elite (82+), 2 rated Trusted (70+), and 9 rated Good (55+).
How ProScore Ranks HVAC Contractors
Every HVAC contractor in Waterloo is evaluated across four pillars: Reputation (ratings across multiple platforms), Verification (government licensing including TSSA 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 HVAC Contractors in Waterloo
Browse all hvac contractors in Waterloo →Frequently Asked Questions
Who is the best HVAC contractor in Waterloo?
Delta Air Systems Ltd. has the highest ProScore (75/100) among 13 verified hvac contractors in Waterloo, Ontario. Rankings are based on ProScore, which evaluates ratings, government licensing (TSSA), WSIB coverage, and AI-analyzed customer sentiment.
How do I find a trustworthy HVAC contractor in Waterloo?
Look for hvac contractors with verified TSSA licensing, active WSIB coverage, and consistent ratings across multiple platforms. ProScore aggregates these signals into a single score from 0-100. In Waterloo, 0 hvac contractors hold Elite-tier ProScores (82+), 2 are Trusted-tier (70+), and 9 are Good-tier (55+).
Are hvac contractors in Waterloo licensed?
HVAC Contractors in Ontario are required to hold TSSA licensing. ProScore verifies this against official TSSA records for every provider in our database. Of the top 5 hvac contractors in Waterloo by ProScore, 2 hold verified TSSA credentials and 5 carry active WSIB coverage.
How many verified hvac contractors are in Waterloo?
ProScore has verified and scored 13 hvac contractors in Waterloo, 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 hvac contractors in Waterloo?
Among 13 verified hvac contractors in Waterloo, Ontario: 0 are Elite-tier (82+), 2 are Trusted-tier (70+), and 9 are Good-tier (55+). The top 5 average a ProScore of 68/100, with Delta Air Systems Ltd. leading at 75/100.