Popular Cities
24 companies listed · 10 in Ajax · 15 open 24/7 · 21 open weekends · 22 rated 4.5+
Data verified October 19, 2026
The 24 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.
10 of the 24 companies we list are based in Ajax; the other 14 serve Ajax from towns including Scarborough (18 km), Whitby (8 km) and Markham (18 km). The companies on this page are rated from 4.0 to 5.0 across 5,624 reviews; 15 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 (79%). 15 are open around the clock; 20 are open on Saturdays and 19 on Sundays. The services the companies on this page list most often on their websites are heat pumps (4), water heaters (4), air conditioner (3), duct cleaning (3) and furnace (3). 8 show a licence on their websites. Domain records put 11 websites of the companies on this page at ten or more years old; the oldest dates from 2000. 17 offer emergency call-outs; 8 offer financing or payment plans; 12 give free estimates; 4 are family- or locally-owned and 11 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.
Saturday or Sunday hours show up for 21 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.
- “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
- “The overall service and workmanship was excellent. They were on time, fairly priced, and finished the job within the given timeframe.” — customer of Expert Heating & Air Conditioning
- “Always professional and friendly. I use Rodman's for all my furnace and air conditioning issues, plus I have them do the yearly maintenance on the units as well.” — customer of Rodman's Heating & Air Conditioning
- “True professionals & incredibly helpful. They were able to arrange for a same-day appointment when our furnace experienced issues, which was a true life saver.” — customer of Air Pro Heating and Air Conditioning Services
Excerpts from public reviews of the companies listed on this page.
Ontario CO Alarm Rules 2026: How Many You Need and Where
Central AC Replacement Cost in Canada: What You'll Pay
Furnace Replacement Cost in Canada: What You'll Pay
Furnace Smells Like Burning? What's Normal, What Isn't
How to Get Out of a Water Heater Rental in Canada
Is Duct Cleaning Worth It in Canada? Evidence, Cost, Rights
