City Energy Heating & Air Conditioning Markham
“Very fast response, very knowledgeable, got our furnace back up and running very quickly.”
Best HVAC Contractors in Markham, ON
23 companies listed · all 23 in Markham · 10 open 24/7 · 19 open weekends · 22 rated 4.5+
Data verified October 21, 2026
Tri-Air Systems
“Their technicians are professional, friendly and most importantly take pride in their work and ensure the area is clean when they are done.”
Solidcare Home Improvements
“The installers were very careful applying drop clothes to ensure nothing was damaged.”
Icare Home Comfort
“We had great experience with ICare Home Comfort people, the installation and rebate process was very smooth and fast.”
Markham Heating & Air Conditioning
“When he arrived, he was able to diagnose and repair our 40 year old air conditioner when I'm quite sure other companies would've taken a peek and told us to scrap it!”
High Efficiency Cooling & Heating Inc.
“This year, they reached out to us early to ensure that we would be serviced in time for winter during Covid.”
The 23 companies listed for Markham, ON 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: Markham, ON
All 23 companies we list here are in Markham itself. We have 37 companies in Markham on file; this page shows the highest-rated 23. The companies on this page are rated from 4.3 to 5.0 across 33,126 reviews; 22 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (91%), quality (81%) and responsiveness (72%). The topics that come up most in reviews of the companies on this page are "price", "efficient" and "cleanliness". 10 are open around the clock; 19 are open on Saturdays and 15 on Sundays. The services the companies on this page list most often on their websites are air conditioning (2), heating (2), maintenance and repair (2) and pre-season preparation (2). 9 show a licence on their websites and 1 lists staff certifications (NATE). Domain records put 10 websites of the companies on this page at ten or more years old; the oldest dates from 2005. 11 offer emergency call-outs; 1 offers financing or payment plans; 5 give free estimates; 2 are family- or locally-owned and 6 list coupons or special offers. 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 Markham work on Saturdays or Sundays?
Saturday or Sunday hours show up for 19 of the 23 companies on this page. Saturday is mostly repair work; installations land on weekdays, because supply houses and municipal inspectors keep weekday hours.
Hargrave Heating & Air Conditioning
“Stephen is one of the people who comes to our house and saves the day with the furnace and air conditioning.”
Eco Star Home Services Co.
“Have to thank the service rep and the technician Jason who help me resolved the issue”
Royal Air Solutions
“The technician was very kind and did a wonderful job servicing our air conditioning”
Superior Care Home Services Inc.
“Morgan from Superior care home service did a great job installing our new air conditioner.”
Dima Plumbing
“Andrei arrived exactly when he said he would and did an amazing job installing drain baskets and piping for a new kitchen sink and copper water line to our new fridge.”
Spring Home Heating & Cooling
“He explained the various pros and cons of different installation options and set-ups in my specific situation as well as the short-term and longer-term up-front and/or operational cost savings gained with each option.”
For Saving Home Service
“Nice and friendly staffs , they are patient answer any questions and install equipments, clean well after working, the price is reasonable, honestly recommend.”
Confirmed Attics & Insulation
“Moe and his team were so delightful to work with throughout the process of getting our carpets removed and then replaced with vinyl flooring.”
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Enercare
“The technician who came to my place has a good understanding of the system, he provided good informative answers to my questions and resolved my issues in good time”
Exalted Services
“Miss Giselle was a very knowledgeable, friendly and made me feel at ease and comfortable with my purchase and decision”
Air Leaders Inc.
“Dan is a great guy , professional and pleasant to work with..”
Stott Hvac Systems
“Their reminder notice for my appointment included the names and photos of their techs that would be doing my service.”
Rosewood Heating and Cooling Ltd.
“Jason was very careful, patient and meticulous in diagnosing my air conditioner's problem, even in the rain.”
Blue Leaf Home Services
“I could not have been happier with the professionalism with Ali, the service technician,pricing, and customer service.”
Imperial Energy
“Bruce and his team know their stuff, and were a huge help in upgrading our HVAC system.”
Toronto Home Comfort
“Needed some help recently, and they sent over the best technicians ever!”
Climanetics Inc
“I definitely recommend Climanetics They also do all of the maintenance for our very large condo building and are always quick and efficient with the maintenance.”
Why these companies made our list
What customers say about companies in Markham
- “The process with Spring Home was very smooth: quick and reasonable quote, flexible schedule for job, timely completion and no extra costs identified.” — customer of Spring Home Heating & Cooling
- “The guys (Saif, and Anil) who came to install the furnace were on time and very professional and explained everything nicely.” — customer of For Saving Home Service
- “Jason was professional, patient and reasonably priced. Thank you for coming in short notice and fixing our furnace so quickly!” — customer of Rosewood Heating and Cooling Ltd.
- “Very professional, excellent workmanship, cleaned up after themselves as well as taking away the old furnace and all the garbage.” — customer of Exalted Services
- “I'd highly recommend Imperial Energy. They came in with a great quote on an air handler unit, were quick to order parts and get the installation scheduled and completed, and had excellent communication throughout the process.” — customer of Imperial Energy
Excerpts from public reviews of the companies listed on this page.
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