Confort MH
“From the first contact, their team demonstrated professionalism and responsiveness, answering all my questions and helping me choose the most suitable air conditioning system.”
Best HVAC Contractors in Montreal, QC
21 companies listed · all 21 in Montreal · 1 open 24/7 · 6 open weekends · 17 rated 4.5+
Data verified October 21, 2026
Les Services Polarbear
“Alexa guided us well and advised us, always there to answer our questions.”
Airmatic Ventilation Inc
“Excellent service, I really liked the work of Martin and Kévin, very professional.”
Airgreen Inc.
“The installation was a little more complex than average and they were able to find solutions.”
Celsius Refrigeration
“Excellent service from the technicians who came to install my heat pump.”
Confortech Climatisation Chauffage
“Helpful, prompt, patient and efficient service and follow-up from Jeffrey and the team.”
The 21 companies listed for Montreal, QC handle furnaces and heat pumps in winter and the cooling side in summer. Profiles repeat what each firm publishes about hours, licensing and brands, with ratings and review quotes gathered from public reviews.
Area overview: Montreal, QC
All 21 companies we list here are in Montreal itself. 20 of the companies on this page have a rating, from 3.8 to 5.0 across 2,264 reviews; 7 have 50 or more reviews and 17 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (89%), quality (74%) and responsiveness (64%). The topics that come up most in reviews of the companies on this page are "price" and "cleanliness". 1 is open around the clock; 6 are open on Saturdays and 4 on Sundays. 10 show a licence on their websites. Domain records put 8 websites of the companies on this page at ten or more years old; the oldest dates from 2000. 2 offer emergency call-outs; 1 offers financing or payment plans; 2 give free estimates and 2 list coupons or special offers. We have a website on file for 18 of the companies on this page; 14 publish a contact page; 12 list a public email and 2 take bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do any heating firms listed for Montreal work on Saturdays or Sundays?
Saturday or Sunday hours show up for 6 of the 21 companies on this page. Saturday is mostly repair work; installations land on weekdays, because supply houses and municipal inspectors keep weekday hours.
Plomberie G Courchesne Inc.
“Then, he explained to me what they were going to do and answered my many questions both during the meeting, but also after our meeting.”
Airspand
“Scott went above and beyond by coming to my house on a Sunday—when most companies wouldn't even answer the phone, let alone make a service call”
Bissonnette Refrigeration
“Darren Bissonnette came over after work hours to address our emergency and was able to quickly diagnose my mom's aging central air and repair it in one visit.”
Marmott Énergies
“From the initial quotation, to the onsite visit, through to the installation, Marmott is a very professional company to work with.”
JCD Refrigeration Inc (Centre-Ville)
“Arrived on time, finished job quickly.”
Climatisation Thermo Expert
“I warmly recommend this company which does a great job with honesty and involvement.”
Airconditioners Canada
“The service my partner and I received was top notch and a very pleasant experience in a high stress situation.”
Ventilation Manic Inc
“A real team of experts for all your projects!”
Climatisation Rosemont
“Installed AC and ventilation for my new construction.”
Rekon Air Climatisation Ventilation Chauffage
Evoclimat
“The smart thermostat was well configured and its operation was generously explained.”
Briggs TM Plomberie Chauffage Inc
“Best water heating repair in town!”
Climatisation 365
“Excellent service, fast, professional, affordable and transparent.”
DG Thermotechniques Ltee.
“My gas hot water tank broke on me one evening and within 48 hours they were able to diagnose the issue and replace my water heater altogether.”
Air Tronic Climatisation
Why these companies made our list
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