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Exalted Services
- Efficient
- Insulation
- Management
“There was an issue with a venting up charge but I understand that they can't eat the cost when their prices are so competitive but they met me in the middle.”
Best HVAC Contractors in Markham, ON
24 companies listed · 23 in Markham · 11 open 24/7 · 19 open weekends · 21 rated 4.5+
Data verified October 18, 2026
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Hargrave Heating & Air Conditioning
- Humidifier
- Tech
- Responsive
“Tim extremely capably replaced my AC in March 2022 with a recently developed 2 ton cold climate air source heat pump on my gas furnace for a government grant, which almost covered the cost.”
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Icare Home Comfort
- Patience
- Water Softener
- Subsidy
“After we strongly requested and explained that when we signed the contract, it was stated that we could only use open wires, so we reluctantly did the open wires.”
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Eco Star Home Services Co.
- Products
- Patience
- Insulation
“There were some issues related to my existing setup during the furnace installation, and Joseph was there to resolve them completely without any additional cost to me.”
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Rosewood Heating and Cooling Ltd
- Air Filter
- Humidifier
- 30 Mins
“Jason is everything you want in a tradesperson: arrives on time, is friendly and courteous, is thorough and conscientious in his work and does not recommend any service or equipment that is not needed.”
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High Efficiency Cooling & Heating Inc.
- Work
- Educate
- Rebate
“He helped us better understand how our system needed to be set up in conjunction with our house's existing furnace and duct work and the how much output is needed for our space.”
The 24 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
23 of the 24 companies we list are based in Markham; the other one does not publish an address. The companies on this page are rated from 4.0 to 5.0 across 20,750 reviews; 20 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (94%), quality (80%) and responsiveness (79%). The topics that come up most in reviews of the companies on this page are "price", "efficient" and "cleanliness". 11 are open around the clock; 19 are open on Saturdays and 15 on Sundays. 11 show a licence on their websites and 1 lists staff certifications (NATE). Domain records put 12 websites of the companies on this page at ten or more years old; the oldest dates from 1997. 14 offer emergency call-outs; 2 offer financing or payment plans; 7 give free estimates; 2 are family- or locally-owned and 6 list coupons or special offers. We have a website on file for all 24 of the companies on this page; 22 publish a contact page; 21 list a public email and 5 take bookings online. We count these figures across the companies on this page; distances are straight-line, and 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 24 companies on this page. Saturday is mostly repair work; installations land on weekdays, because supply houses and municipal inspectors keep weekday hours.
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Royal Air Solutions
- Expertise
- Water Tank
- Needs
“Although we ended up deciding to go with a different vendor to install another brand that RAS does not deal with, I would not hesitate to reach out to Mr.”
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City Energy Heating & Air Conditioning Markham
- Gas
- Quality
- Unit
“I searched for heating repair in Markham and called city energy heating and cooling because I needed my furnace and air conditioner replaced they came with and hour they were very professional .”
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For Saving Home Service
- Work
- Lennox
- Sales Manager
“They are hardworking and cautious in their movements making sure that they will not damage anything on their path of work and left the area clean and orderly.”
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Superior Care Home Services Inc. 安省冷暖
- Patience
- Profession
- Rebate
“I finally decided to hire Superior Care Home Services after I compared my quotes among others & I'm thankful for the job well done they delivered & corrected the recently installed pipes we had with the other HVAC Co.”
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Pinewood Heating & Air Conditioning
- Questions
- Service
- Products
“Their integrity, quality, and professionalism starts with the owner, Joe, and can be found in everyone who works there, including reception, accounting, and every service technician.”
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Spring Home Heating & Cooling
- Boiler
- Solution
- Hot Water Tank
“They not only guided me through the differences in brands and models but also took the extra step of furnishing detailed documents, outlining the specific parameters of each option I considered.”
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Dima Plumbing
- Drain
- Clog
- Shut Off Valve
“First to replace the basket strainers with the kitchen sink, he also replaced the piping without charging extra when he saw the pipes not installed properly from before.”
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Air Leaders Inc.
- Home
- Information
- Humidifier
“They were responsive in providing a competitive estimate, but also took the time to explain the various options, pro and cons, provide advice and insight.”
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Stott Hvac Systems
- Phone Call
- Confidence
- The Future
“I would highly recommend Stott HVAC for their expertise, workmanship, reliability, professionalism and being respectful to me and my home in keeping it clean.”
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Super Green Energy Saving Inc
- Quote
- Quality
- Products
“Anthony provided reasonable quote up front and the technician Jackie came on time and replaced my tank meanwhile he cleaned all the debris once the tank was installed.”
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Enercare
- Rental Agreement
- Management Consultant
- Energy Management
“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”
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Faster Mechanical Inc.
- Efficiency
- Punctual
- Customer Satisfaction
“We started to fire up the furnace a few weeks ago (October) and hear motor/mechanical noise from the furnace as well as water leaking from the air filter.”
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Imperial Energy
- Project
- Summer
- Well
“If you want to be confident in your choice of company and make the best choice in energy, without over spending, you should give Imperial Energy a call.”
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Tri-Air Systems
- People
“I called Tri Air and not only were they there within the hour, they were brainstorming options to get us up and running as quickly as possible - they were able to find the parts on a weekend (which is usually impossible) and had us working before the...”
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Markham Heating & Air Cond
- Price
“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!”
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Smith and Long (Head Office)
- Quality
- Driver
- Company
“Talented People, Great work place”
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Climanetics Inc
- Management
- Clean
- Maintenance
“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.”
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Tropic Air Heating & Cooling
- Diagnosed
- Competitive
- Home
“As a single mom, I found Loren to be professional, honest and caring of my situation - in my experience, he went above and beyond the call of duty to ensure that my daughter and I did not go without.”
HVAC, Heating & AC Services in Markham, ON Cost Estimates
Minimum cost
$2492
Maximum cost
$14932
National Average
$7774
Avg Per Hour Rates
$207
$5336
$10304
Average price range is based on 426 cost profiles
Why these companies made our list
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