Rodman's Heating & Air Conditioning
“Their deep expertise was clear from the start, but what really sets them apart is their honesty and integrity.”
Best HVAC Contractors in Ajax, ON
15 companies listed · 9 in Ajax · 7 open 24/7 · 12 open weekends · 12 rated 4.5+
Data verified October 19, 2026
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Air Pro Heating and Air Conditioning Services
“Winston came out to help me with my Ecobee4 Instalation and discovered a wiring issue with the furnace.”
Expert Heating & Air Conditioning
“Really good people are really reliable and well respectful they cleaned up after themselves they took everything away and everything works perfect”
Cool Breath Hvac
“Zahoor was quick to diagnose the issue with my old furnace and he gave me options on moving ahead as well as recommendations keeping me in mind.”
Aeroseal Gta Inc
“They showed up exactly on time and the work was done efficiently, without any issues and the house was left as clean as they found it.”
Universal Air
“His staff are just as efficient, extremely nice people to have in your home.”
The 15 companies listed for Ajax, 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: Ajax, ON
9 of the 15 companies we list are based in Ajax; the other 6 serve Ajax from Whitby (8 km), Oshawa (16 km) and Scarborough (18 km). The companies on this page are rated from 2.3 to 5.0 across 8,575 reviews; 9 have 50 or more reviews and 12 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (89%), quality (79%) and responsiveness (74%). The topics that come up most in reviews of the companies on this page are "price" and "efficient". 7 are open around the clock; 11 are open on Saturdays and 11 on Sundays. The services the companies on this page list most often on their websites are air conditioners (2), backwater valves (2), duct cleaning (2), maintenance (2) and sewer backups (2). 3 show a licence on their websites. Domain records put 7 websites of the companies on this page at ten or more years old; the oldest dates from 2000. 9 offer emergency call-outs; 3 offer financing or payment plans; 7 give free estimates; 1 is family- or locally-owned and 3 list coupons or special offers. 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 Ajax work on Saturdays or Sundays?
Saturday or Sunday hours show up for 12 of the 15 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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Checkpoint Mechanical
“This place is super honest and efficient, Dianne is a gem who always takes care of us in a very warm, professional and efficient manner.”
Chamba Brothers Heating and Cooling
Mersey Heating and Air Conditioning
“Technician Sonny Hwang arrived within the service window and completed seasonal heating system maintenance in a timely professional manner”
Plumbing & Heating Heroes
“He made sure everthing was in good order and that we understood everything that needed to be done and gave us a cost upfront so there were no surprises.”
Infiniti Home Comfort
“He also helped with setting the thermostat reminders and offered some good HVAC related advices.”
Limcan Certified Heating and Air Conditioning
“He was friendly, professional and and did a great job Thank you Christopher”
Active Climate Mechanical
“Had a great experience with 2 seperate service calls and highly recommend their expertise and honesty both of which are not easy to come by.”
Taunton Trades Ltd
“The owner came out personally and was incredibly detailed, showing a genuine passion for proper airflow and the overall functioning of the home, rather than just looking to swap out units.”
Why these companies made our list
What customers say about companies in Ajax
- “When my furnace died he was on time, on budget, immaculate work, polite, time flexible, and noticed and fixed things on my water heater that I had not noticed!” — customer of Air Pro Heating and Air Conditioning Services
- “The technicians are friendly, responsive, and respectful of our home, and provide good insights about how the furnace is working.” — customer of Rodman's Heating & Air Conditioning
- “Joe went above and beyond to address not only the expected Aeroseal services but also demonstrated an exceptional level of knowledge in fixing electrical feeds to the furnace and addressing issues with existing ductwork.” — customer of Aeroseal Gta Inc
- “Russ was very knowledgeable and professional and he helped me understand the things I should do to ensure that my furnace and air conditioner function efficiently.” — customer of Rodman's Heating & Air Conditioning
- “Great service. Winston had us up and running with a new furnace within about 24 hours.” — customer of Air Pro Heating and Air Conditioning Services
Excerpts from public reviews of the companies listed on this page.
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