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 highest-scoring HVAC contractors in Waterloo on ProScore are Delta Air Systems Ltd. (80/100), Afterglow (77/100) and All Year Heating and Cooling Inc. (73/100). ProScore has scored 12 HVAC contractors in Waterloo across 10+ data sources and 20+ trust signals. 3 of the 12 are Trusted-tier (70+) or higher.
Star ratings alone do not separate them: 12 of the 12 average 4.5 stars or higher on Google, but only 3 reach Trusted (70+). ProScore also weighs government licensing including TSSA, WSIB coverage, ratings on other platforms and what customers say in their reviews.
Trust scores last computed between October 13, 2026 and October 25, 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 64 out of 100. 3 of them reach the Trusted threshold of 70 or higher. 5 are registered with WSIB and 4 hold a TSSA licence. 12 have Google reviews on file — 1,892 reviews in total, and 1 carries a Better Business Bureau rating. Across Ontario, 29% of the HVAC contractors ProScore has scored reach the Trusted threshold; at 25%, Waterloo is below the provincial rate.
Delta Air Systems Ltd. provides HVAC repairs and installations in Waterloo, operating 24/7. Installation work is carried out with attention to cleanliness and efficiency, and staff take time to explain the work and handle associated paperwork.
Delta Air Systems Ltd. ranks 1st of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 80 out of 100 (Trusted tier). Its score draws on 633 Google reviews averaging 4.9 out of 5, 309 reviews on other major review platforms and a Better Business Bureau rating of A+. Public records show it is registered with WSIB.
Afterglow is an HVAC contractor in Waterloo that handles repairs and installations on a weekday schedule.
Afterglow ranks 2nd of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 77 out of 100 (Trusted tier). Its score draws on 149 Google reviews averaging 4.9 out of 5. Public records show it is registered with WSIB and licensed by the TSSA.
All Year Heating and Cooling Inc. operates 24/7 in Waterloo and handles HVAC repairs and installations on site, with online estimates available.
All Year Heating and Cooling Inc. ranks 3rd of the 12 hvac contractors ProScore scores in Waterloo, holding a ProScore of 73 out of 100 (Trusted 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.
Constant Home Comfort Waterloo provides HVAC installation and tankless water heater services in Waterloo, Ontario, available 24 hours a day, seven days a week, with service available in Arabic, Cantonese, English, and Hindi.
The ProScore for Constant Home Comfort Waterloo draws on 81 Google reviews averaging 4.7 out of 5 and 455 reviews on other major review platforms.
Open 24 hours, seven days a week, Local Heating And Cooling provides HVAC repairs and installations to Waterloo-area properties, with online estimates available.
The ProScore for Local Heating And Cooling draws on 396 Google reviews averaging 5.0 out of 5 and 122 reviews on other major review platforms.
Cross Heating & Air Conditioning Ltd. provides HVAC repair services in Waterloo, operating seven days a week.
The ProScore for Cross Heating & Air Conditioning Ltd. draws on 282 Google reviews averaging 5.0 out of 5.
Markle Heating & Cooling Inc operates 24 hours a day, seven days a week, providing HVAC service in Waterloo, Ontario.
The ProScore for Markle Heating & Cooling Inc draws on 19 Google reviews averaging 5.0 out of 5. Public records show Markle Heating & Cooling Inc is registered with WSIB and licensed by the TSSA.
The ProScore for MD HVAC Solutions draws on 13 Google reviews averaging 4.7 out of 5. Public records show MD HVAC Solutions is registered with WSIB and licensed by the TSSA.
Koebel Heating, Cooling, and Mechanical Inc. provides HVAC services in Waterloo, Ontario, offers online estimates, and is available for weekday appointments.
The ProScore for Koebel Heating, Cooling, and Mechanical Inc. draws on 217 Google reviews averaging 4.9 out of 5.
The ProScore for DHVAC REFRIGERATION draws on 7 Google reviews averaging 5.0 out of 5.
The ProScore for HVAC Done With Care of Waterloo draws on 33 Google reviews averaging 5.0 out of 5.
Available 24/7, NRG HVAC provides HVAC services in Waterloo, Ontario.
The ProScore for NRG HVAC draws on 2 Google reviews averaging 5.0 out of 5.
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 (80/100) 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+), 3 are Trusted-tier (70+), and 6 are Good-tier (54+).
Are hvac contractors in Waterloo licensed?
Gas and fuel work in Ontario must be done by a TSSA-registered contractor using certified technicians. Ask for the registration number and check it with the TSSA. Of the top 12 hvac contractors in Waterloo by ProScore, 4 hold a TSSA registration according to ProScore’s records. Of the top 12 hvac contractors in Waterloo by ProScore, 5 are registered with WSIB according to ProScore’s records.
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 October 13, 2026 and October 25, 2026.
What's the ProScore distribution among hvac contractors in Waterloo?
Among 12 hvac contractors in Waterloo, Ontario: 0 are Elite-tier (81+), 3 are Trusted-tier (70+), and 6 are Good-tier (54+). Together they average a ProScore of 64/100, with Delta Air Systems Ltd. leading at 80/100.
How do HVAC contractors in Waterloo compare with Ontario as a whole?
25% of the HVAC contractors ProScore has scored in Waterloo reach the Trusted tier (70+), against 29% across Ontario as a whole, so Waterloo is below the provincial rate.
HVAC Contractors near Waterloo
The nearest Ontario cities with a ProScore page for this trade — a pro based nearby may cover your area.
Other trades in Waterloo
Other trades with a ProScore page in Waterloo, with the number of scored pros in each.