Best HVAC Contractors in Durham, Ontario
The most trusted HVAC contractor in Durham, Ontario is OT Heating, Cooling and Ventilation, with a ProScore of 70/100.
The most trusted HVAC contractor in Durham, Ontario is OT Heating, Cooling and Ventilation, with a ProScore of 70/100. ProScore has verified 2 HVAC contractors in Durham, scoring each across 10+ data sources and 20+ trust signals. 1 of the 2 are Trusted-tier (70+) or higher.
Last updated: May 6, 2026 · Data refreshed daily
Of 2 hvac contractors in Durham: 0 rated Elite (82+), 1 rated Trusted (70+), and 1 rated Good (55+).
How ProScore Ranks HVAC Contractors
Every HVAC contractor in Durham 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 Durham
Browse all hvac contractors in Durham →Frequently Asked Questions
Who is the best HVAC contractor in Durham?
OT Heating, Cooling and Ventilation has the highest ProScore (70/100) among 2 verified hvac contractors in Durham, 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 Durham?
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 Durham, 0 hvac contractors hold Elite-tier ProScores (82+), 1 is Trusted-tier (70+), and 1 is Good-tier (55+).
Are hvac contractors in Durham 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 2 hvac contractors in Durham by ProScore, 1 hold verified TSSA credentials and 2 carry active WSIB coverage.
How many verified hvac contractors are in Durham?
ProScore has verified and scored 2 hvac contractors in Durham, 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 Durham?
Among 2 verified hvac contractors in Durham, Ontario: 0 are Elite-tier (82+), 1 is Trusted-tier (70+), and 1 is Good-tier (55+). The top 2 average a ProScore of 70/100, with OT Heating, Cooling and Ventilation leading at 70/100.