HVAC Contractors in Waterloo
12 HVAC contractors in Waterloo with multi-platform trust scores.
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Who is the best HVAC contractor in Waterloo, Ontario?
The most trusted HVAC contractor in Waterloo, Ontario is Delta Air Systems Ltd., with a ProScore of 73/100. ProScore has scored 12 HVAC contractors in Waterloo across 10+ data sources and 20+ trust signals. 1 of the 12 are Trusted-tier (70+) or higher.
Trust scores last computed between September 2, 2026 and September 19, 2026.
Which HVAC contractors in Waterloo score highest?
All 12 scored hvac contractors in Waterloo, ranked by ProScore.
ProScore scores 12 hvac contractors in Waterloo, and their average score is 58 out of 100. 1 of them reaches the Trusted threshold of 70 or higher. 5 are registered with WSIB and 2 hold a TSSA licence. 12 have Google reviews on file — 1,867 reviews in total, and 1 carries a Better Business Bureau rating.
Delta Air Systems Ltd. ranks 1st of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 73 out of 100 (Trusted tier). Its score draws on 633 Google reviews averaging 4.9 out of 5 and a Better Business Bureau rating of A+. Public records show it is registered with WSIB.
All Year Heating and Cooling Inc. ranks 2nd of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 67 out of 100 (Good tier). Its score draws on 60 Google reviews averaging 5.0 out of 5. Public records show it is registered with WSIB and licensed by the TSSA. Its ProScore has risen since the previous recompute.
Afterglow ranks 3rd of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 65 out of 100 (Good tier). Its score draws on 149 Google reviews averaging 4.9 out of 5. Public records show it is registered with WSIB.
Cross Heating & Air Conditioning Ltd. ranks 4th of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 62 out of 100 (Good tier). Its score draws on 257 Google reviews averaging 5.0 out of 5.
MD HVAC Solutions ranks 5th of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 62 out of 100 (Good tier). Its score draws on 13 Google reviews averaging 4.7 out of 5. Public records show it is registered with WSIB and licensed by the TSSA.
Local Heating And Cooling ranks 6th of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 61 out of 100 (Good tier). Its score draws on 396 Google reviews averaging 5.0 out of 5 and 122 reviews on other major review platforms.
Constant Home Comfort Waterloo ranks 7th of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 58 out of 100 (Good tier). Its score draws on 81 Google reviews averaging 4.7 out of 5.
Koebel Heating, Cooling, and Mechanical Inc. ranks 8th of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 58 out of 100 (Good tier). Its score draws on 217 Google reviews averaging 4.9 out of 5.
Markle Heating & Cooling Inc ranks 9th of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 56 out of 100 (Good tier). Its score draws on 19 Google reviews averaging 5.0 out of 5. Public records show it is registered with WSIB.
DHVAC REFRIGERATION ranks 10th of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 50 out of 100 (Basic tier). Its score draws on 7 Google reviews averaging 5.0 out of 5. Its ProScore has risen since the previous recompute.
HVAC Done With Care of Waterloo ranks 11th of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 43 out of 100 (Basic tier). Its score draws on 33 Google reviews averaging 5.0 out of 5.
NRG HVAC ranks 12th of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 43 out of 100 (Basic tier). Its score draws on 2 Google reviews averaging 5.0 out of 5.
Of 12 hvac contractors in Waterloo: 0 rated Elite (81+), 1 rated Trusted (70+), and 8 rated Good (54+).
How is an HVAC contractor's ProScore calculated?
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 →Who are the top 3 HVAC contractors in Waterloo?
Browse all hvac contractors in Waterloo →What else should I check before hiring hvac contractors in Waterloo?
Frequently Asked Questions
Who is the best HVAC contractor in Waterloo?
Delta Air Systems Ltd. has the highest ProScore (73/100) among 12 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 (81+), 1 is Trusted-tier (70+), and 8 are Good-tier (54+).
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 12 hvac contractors in Waterloo by ProScore, 2 hold verified TSSA credentials and 5 carry active WSIB coverage.
How many hvac contractors has ProScore scored in Waterloo?
ProScore has scored 12 hvac contractors in Waterloo, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Trust scores last computed between September 2, 2026 and September 19, 2026.
What's the ProScore distribution among hvac contractors in Waterloo?
Among 12 hvac contractors in Waterloo, Ontario: 0 are Elite-tier (81+), 1 is Trusted-tier (70+), and 8 are Good-tier (54+). The top 12 average a ProScore of 58/100, with Delta Air Systems Ltd. leading at 73/100.