HVAC Contractors in Markham
25 HVAC contractors in Markham with multi-platform trust scores.
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Who is the best HVAC contractor in Markham, Ontario?
The highest-scoring HVAC contractors in Markham on ProScore are Constant Home Comfort (84/100), Air Leaders Inc. (83/100) and Eco Star Home Services Co. (83/100). ProScore has scored 25 HVAC contractors in Markham across 10+ data sources and 20+ trust signals. 11 of the 25 are Trusted-tier (70+) or higher.
Star ratings alone do not separate them: 24 of the 25 average 4.5 stars or higher on Google, but only 11 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 24, 2026.
Which HVAC contractors in Markham score highest?
All 25 scored hvac contractors in Markham, ranked by ProScore.
ProScore scores 25 hvac contractors in Markham, and their average score is 69 out of 100. 11 of them reach the Trusted threshold of 70 or higher. 6 are registered with WSIB and 8 hold a TSSA licence. 25 have Google reviews on file — 5,624 reviews in total, and 5 carry a Better Business Bureau rating. Across Ontario, 29% of the HVAC contractors ProScore has scored reach the Trusted threshold; at 44%, Markham is above the provincial rate.
Constant Home Comfort provides HVAC repair work in Markham, operating 24/7 with online estimates available.
Constant Home Comfort ranks 1st of the 25 hvac contractors ProScore scores in Markham, holding a ProScore of 84 out of 100 (Elite tier). Its score draws on 583 Google reviews averaging 4.8 out of 5, 449 reviews on other major review platforms and a Better Business Bureau rating of A+. Public records show it is registered with WSIB and licensed by the TSSA.
Air Leaders Inc. is an HVAC contractor based in Markham that handles repair and installation work on site, operates six days a week, and offers on-site parking.
Air Leaders Inc. ranks 2nd of the 25 hvac contractors ProScore scores in Markham, holding a ProScore of 83 out of 100 (Elite tier). Its score draws on 146 Google reviews averaging 4.9 out of 5 and 257 reviews on other major review platforms. Public records show it is registered with WSIB and licensed by the TSSA.
Eco Star Home Services Co. operates 24 hours a day, seven days a week for HVAC work in Markham, offering online estimates and on-site service in English, Cantonese, and Mandarin.
Eco Star Home Services Co. ranks 3rd of the 25 hvac contractors ProScore scores in Markham, holding a ProScore of 83 out of 100 (Elite tier). Its score draws on 495 Google reviews averaging 4.7 out of 5 and a Better Business Bureau rating of A+. Public records show it is registered with WSIB and licensed by the TSSA.
High Efficiency Cooling & Heating Inc. provides HVAC repair and installation work in Markham, operating 24 hours a day, seven days a week on site.
The ProScore for High Efficiency Cooling & Heating Inc. draws on 1,321 Google reviews averaging 4.8 out of 5. Public records show High Efficiency Cooling & Heating Inc. is registered with WSIB and licensed by the TSSA.
Operating 24/7, Hargrave Heating & Air Conditioning provides HVAC repair and installation services in Markham.
The ProScore for Hargrave Heating & Air Conditioning draws on 370 Google reviews averaging 4.9 out of 5 and 201 reviews on other major review platforms. Public records show Hargrave Heating & Air Conditioning is registered with WSIB and licensed by the TSSA.
Aire One Heating & Cooling operates around the clock in Markham and handles HVAC repairs and installations, with staff available in Arabic, English, Hindi, and Mandarin.
The ProScore for Aire One Heating & Cooling draws on 486 Google reviews averaging 4.8 out of 5, 1,294 reviews on other major review platforms and a Better Business Bureau rating of A+.
Service Express HVAC operates 24/7 in Markham and offers online estimates for on-site work.
The ProScore for Service Express HVAC draws on 438 Google reviews averaging 4.9 out of 5. Public records show Service Express HVAC is licensed by the TSSA.
The ProScore for Imperial Energy draws on 123 Google reviews averaging 4.8 out of 5 and a Better Business Bureau rating of A+. Public records show Imperial Energy is licensed by the TSSA.
HVAC Near Me handles on-site HVAC repair work in Markham, operating seven days a week with attention to clean, detailed installation workmanship.
The ProScore for HVAC Near Me draws on 83 Google reviews averaging 4.9 out of 5 and 14 reviews on other major review platforms.
Super Green HVAC handles HVAC repairs in Markham, with estimates available online and service seven days a week.
The ProScore for Super Green HVAC draws on 90 Google reviews averaging 4.9 out of 5.
Markham Heating & Air Conditioning handles HVAC repair and installation in Markham, operating seven days a week and offering online estimates. They respond quickly to emergency calls and take time to explain repair options and help customers understand their heating systems. Services available in English and French.
The ProScore for Markham Heating & Air Conditioning draws on 65 Google reviews averaging 4.9 out of 5.
Spring Home Heating & Cooling is an HVAC repair contractor in Markham that operates seven days a week and performs work on site.
The ProScore for Spring Home Heating & Cooling draws on 244 Google reviews averaging 4.7 out of 5 and a Better Business Bureau rating of A+.
Royal Air Solutions is an HVAC repair contractor in Markham operating 24/7 and available for on-site work with online estimates.
The ProScore for Royal Air Solutions draws on 271 Google reviews averaging 5.0 out of 5.
City Energy Heating & Air Conditioning Markham provides HVAC services in Markham, operating six days a week and available by appointment for on-site work, with online estimates offered.
The ProScore for City Energy Heating & Air Conditioning Markham draws on 102 Google reviews averaging 4.9 out of 5.
For Saving Home Service provides HVAC repair and installation work in Markham, available 24/7 and dispatched to job sites.
The ProScore for For Saving Home Service | HVAC | AC | Furance Services draws on 258 Google reviews averaging 4.8 out of 5.
Pinewood Heating & Air Conditioning handles HVAC repairs in Markham, operating on-site and offering online estimates during weekday hours.
The ProScore for Pinewood Heating & Air Conditioning draws on 235 Google reviews averaging 4.8 out of 5.
Genie Heating and Cooling Inc is an HVAC contractor in Markham that offers online estimates and operates seven days a week.
The ProScore for Genie Heating and Cooling Inc draws on 13 Google reviews averaging 5.0 out of 5 and 16 reviews on other major review platforms.
TRI-AIR Systems provides HVAC repair and installation work on site in Markham, operating weekdays.
The ProScore for TRI-AIR Systems draws on 32 Google reviews averaging 4.3 out of 5. Public records show TRI-AIR Systems is registered with WSIB and licensed by the TSSA.
Home Trade Standards - Condo HVAC Specialists operates 24 hours, seven days a week from Markham, offering HVAC services with on-site free parking and wheelchair-accessible facilities.
The ProScore for Home Trade Standards - Condo HVAC Specialists draws on 30 Google reviews averaging 5.0 out of 5.
HVAC Smart Solution is an HVAC contractor based in Markham, Ontario, open on weekdays.
The ProScore for HVAC Smart Solution draws on 37 Google reviews averaging 5.0 out of 5 and 93 reviews on other major review platforms.
Blue Leaf Home Services is an HVAC contractor based in Markham that operates seven days a week.
The ProScore for Blue Leaf Home Services draws on 40 Google reviews averaging 5.0 out of 5.
Eco Mechanical in Markham handles HVAC repairs and provides online estimates, operating six days a week.
The ProScore for Eco Mechanical draws on 26 Google reviews averaging 5.0 out of 5.
The ProScore for HVAC BOSS draws on 29 Google reviews averaging 5.0 out of 5.
Mersey Heating & Air Conditioning provides HVAC services in Markham, Ontario. Field technicians arrive on time and engage professionally with customers, while the sales team responds quickly with transparent pricing and thorough assessments.
The ProScore for Mersey Heating & Air Conditioning draws on 84 Google reviews averaging 4.6 out of 5.
The ProScore for NT Mechanical - HVAC Licensed Contractors draws on 23 Google reviews averaging 5.0 out of 5.
How is an HVAC contractor's ProScore calculated?
Every HVAC contractor in Markham 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 Markham?
Browse all hvac contractors in Markham →What else should I check before hiring hvac contractors in Markham?
Frequently Asked Questions
Who is the best HVAC contractor in Markham?
Constant Home Comfort has the highest ProScore (84/100) among 25 HVAC contractors in Markham, 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 Markham?
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 Markham, 3 hvac contractors hold Elite-tier ProScores (81+), 8 are Trusted-tier (70+), and 13 are Good-tier (54+).
Are hvac contractors in Markham 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 25 hvac contractors in Markham by ProScore, 8 hold a TSSA registration according to ProScore’s records. Of the top 25 hvac contractors in Markham by ProScore, 6 are registered with WSIB according to ProScore’s records.
How many hvac contractors has ProScore scored in Markham?
ProScore has scored 25 hvac contractors in Markham, 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 24, 2026.
What's the ProScore distribution among hvac contractors in Markham?
Among 25 hvac contractors in Markham, Ontario: 3 are Elite-tier (81+), 8 are Trusted-tier (70+), and 13 are Good-tier (54+). Together they average a ProScore of 69/100, with Constant Home Comfort leading at 84/100.
How do HVAC contractors in Markham compare with Ontario as a whole?
44% of the HVAC contractors ProScore has scored in Markham reach the Trusted tier (70+), against 29% across Ontario as a whole, so Markham is above the provincial rate.
HVAC Contractors near Markham
The nearest Ontario cities with a ProScore page for this trade — a pro based nearby may cover your area.
Other trades in Markham
Other trades with a ProScore page in Markham, with the number of scored pros in each.