Best HVAC Contractors in Ajax, Ontario
The most trusted HVAC contractor in Ajax, Ontario is Shax HVAC Ltd., with a ProScore of 71/100.
The most trusted HVAC contractor in Ajax, Ontario is Shax HVAC Ltd., with a ProScore of 71/100. ProScore has verified 6 HVAC contractors in Ajax, scoring each across 10+ data sources and 20+ trust signals. 4 of the 6 are Trusted-tier (65+) or higher.
Last updated: June 20, 2026 · Data refreshed daily
Of 6 hvac contractors in Ajax: 0 rated Elite (80+), 4 rated Trusted (65+), and 2 rated Good (50+).
How ProScore Ranks HVAC Contractors
Every HVAC contractor in Ajax 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 Ajax
Browse all hvac contractors in Ajax →Frequently Asked Questions
Who is the best HVAC contractor in Ajax?
Shax HVAC Ltd. has the highest ProScore (71/100) among 6 verified hvac contractors in Ajax, 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 Ajax?
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 Ajax, 0 hvac contractors hold Elite-tier ProScores (80+), 4 are Trusted-tier (65+), and 2 are Good-tier (50+).
Are hvac contractors in Ajax 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 Ajax by ProScore, 3 hold verified TSSA credentials and 1 carry active WSIB coverage.
How many verified hvac contractors are in Ajax?
ProScore has verified and scored 6 hvac contractors in Ajax, 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 Ajax?
Among 6 verified hvac contractors in Ajax, Ontario: 0 are Elite-tier (80+), 4 are Trusted-tier (65+), and 2 are Good-tier (50+). The top 5 average a ProScore of 68/100, with Shax HVAC Ltd. leading at 71/100.