Ajax, ON

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Ajax, ON
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Professional HVAC Contractors in Ajax, ON

Handpicked from 51 vetted & reviewed Heating & Air Conditioning companies in the Ajax area, explore the top 5 leaders in their field among the selected group of 24 finalists.

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Cool Breath Hvac

Cool Breath Hvac

(12)
Tankless Water Heater, Maintenance, Water Heater
“Completely satisfied. Installed 2 ton 16 seer AC. Done professionally and ensured leaving the place clean as it was before. I can feel a clear difference in cooling. Working very well. Amazing job done!! Highly recommended.”
Emergency Services
Free Initial Consultation
In Business Since 2022
Garrardview St, Ajax, ON L1Z 0N6
Featured

CoolBreath, the premier HVAC contractor in Ontario, Canada, is your go-to solution for unparalleled heating, ventilation, and air conditioning services. Specializing in both residential and commercial projects, CoolBreath's expert technicians deliver top-notch installation, repair, and maintenance services. Known for their professionalism and commitment to customer satisfaction, CoolBreath ensures optimal indoor comfort year-round. With transparent pricing and a personalized approach to service, CoolBreath stands out as the trusted choice for all HVAC needs in Ontario, making sure you can breathe easy in your perfectly climate-controlled space.

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Above & Beyond Mechanical Ltd.

Above & Beyond Mechanical Ltd.

(49)
  • Heat Pump
  • Patient
  • Pricing
“Fast professional service. Helped me out Friday night right before Christmas. Positive Responsiveness, Punctuality, Professionalism Services Repair HVAC”
Emergency Services
Offers Financing Options
Coupons & Offers
In Business Since 2023
2, 157C Harwood Ave N Suite #389, Ajax, ON L1Z 0B6
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Rodman's Heating & Air Conditioning

Rodman's Heating & Air Conditioning

(48)
Heat Pumps, Furnace Repair Replacement Cleaning, Duct Cleaning
“Office responded to our request promptly and set up our AC new installation within days! Installers that came were on time and professional. New unit is good quality and all works well! Positive Responsiveness, Punctuality, Quality, Professionalism...”
Licensed
Offers Financing Options
Family Business
Free Initial Consultation
539 Westney Rd S, Ajax, ON L1S 4N7
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HH Renovation & General Contracting Inc

HH Renovation & General Contracting Inc

(50)
Painting, Flooring, Electricity
“Me and my fiancee just had our 3-piece bathroom renovated by HH / Hamid/ and his team, and their work has been very satisfactory. I've been impressed with their work and efficiency. Our renovation had to be quick, Hamid and his team were very accommo...”
Emergency Services
44 Cragg Crescent, Ajax, ON L1T
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Buildingbybri Handyman & Tree Services

Buildingbybri Handyman & Tree Services

(49)
  • Backyard
  • Team
  • Trimmed
“Brian came to change a ceiling lightbulb that my father and I simply could not reach. He was in and out in five minutes, super knowledgeable and friendly. I will definitely use him again and recommend. 🙂 …”
Family Business
Free Initial Consultation
47 Gates Crescent, Ajax, ON L1S
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Best of 2025

Qualification Criteria for best of Winners

Minimum Overall Score
98 (100)
Minimum Reputation Rank
99.6 Percentile
All of our award winners are based on identifiable facts - reviews, performance, and experience - collected by scientific means. We use this data to assess each business’s essential features, weighting them according to their importance to customers.
Read our methodology
Prominent finalists
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Air Pro Heating and Air Conditioning Services

Air Pro Heating and Air Conditioning Services

(49)
Repairs, Installations, Payment
“Excellent service, punctual and professional. 10/10 would recommend over any other company Positive Responsiveness, Punctuality, Quality, Professionalism Services Heating system installation, Install AC, Thermostat installation”
Coupons & Offers
In Business Since 2008
19 Beadle Dr, Ajax, ON L1S 7P1
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Expert Heating & Air Conditioning

Expert Heating & Air Conditioning

(48)
Scarborough, Etobicoke, Pickering
“Ankit is an excellent guy who knows the work and is well knowledgeable for what he does Good work 👍 Positive Responsiveness, Punctuality, Quality, Professionalism, Value Services HVAC system maintenance, A/C system maintenance, HVAC duct & vent inst...”
Licensed
Emergency Services
In Business Since 2020
12 Stott Ave, Ajax, ON L1T 0M5
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Norris Roofing

Norris Roofing

(48)
  • Eaves
  • Flat Roof
  • Soffits
“Really happy with Norris Roofing. Rob and his crew were great - diligent, reliable, professional and the work was high-quality. Highly recommend! Positive Responsiveness, Punctuality, Quality, Professionalism Services Roof installation”
146 Taunton Rd E, Ajax, ON L1T 4V9
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Eastern Eavestroughing

Eastern Eavestroughing

(21)
  • Downspouts
  • Team
  • Quote
“This is to thank Issac at Eastern Eavestroughing for his exceptional customer service over the years. We had used Eastern a few years ago to replace our eavestrough/ downspouts and since then Issac has been my go to guy for any concerns over eavestro...”
Emergency Services
Free Initial Consultation
Family Business
In Business Since 2016
855 Westney Rd S #1, Ajax, ON L1S 3M4
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PC Mechanical Services

PC Mechanical Services

(12)
Residential Hvac, Institutional Hvac, Environmental Chamber Service
“Nick and Ross installed a gas line to our new stove in Scarborough and did a wonderful job. They were on-time, friendly and efficient and even offered to deliver the stove from a few blocks away. Great job!”
Emergency Services
2 Westney Rd N, Ajax, ON L1T 3H3
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Mr General Contractors & Renovations Durham

Mr General Contractors & Renovations Durham

(6)
Interior Design, Roofing Contractor, Basement Renovation
“We recently had the pleasure of working with Mr General Contractor on a kitchen project. Their team demonstrated exceptional skill and professionalism. They were efficient, attentive to details, and made the entire process smooth and stress-free. Hig...”
Free Initial Consultation
48 Tulloch Dr, Ajax, ON L1S 2S5
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Petevi Foam Insulation

Petevi Foam Insulation

(1)
“Hey there, I hired this guys, and they showed up on time, they did their work properly Positive Responsiveness, Punctuality, Quality, Professionalism, Value”
Family Business
In Business Since 2021
34 Bignell Crescent, Ajax, ON L1Z 0P7
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Aeroseal Gta Inc

Aeroseal Gta Inc

(5)
  • Professional
  • House
  • Hvac
“Various rooms in our house were either too hot or too cold and as luck would have it we discovered Aeroseal. I called and explained the situation to Joe and he walked me through the process and we booked an appointment for them to come out to get our...”
In Business Since 2013
230 MacKenzie Ave, Ajax, ON L1S 2E8
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Chamba Brothers Heating and Cooling

Chamba Brothers Heating and Cooling

“Chamba Brothers Heating and Cooling is a reputable service provider specializing in a wide range of HVAC services. Known for their expertise and commitment to customer satisfaction, Chamba Brothers offers comprehensive solutions to meet residential a...”
Free Initial Consultation
In Business Since 2016
33 Falby Ct #1510, Ajax, ON L1S 3R3
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Universal Air

Universal Air

(5)
“Extremely honest, reliable and professional. Universal Air took the time to explain the issue and provide cost efficient recommendations for my home without overselling or price gauging. Would definitely use them again! Positive Responsiveness, Punct...”
Offers Financing Options
Free Initial Consultation
In Business Since 2011
103 McMaster Ave, Ajax, ON L1S
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Iecs

Iecs

In Business Since 2006
55 Mills Rd #9, Ajax, ON L1S 2H2
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Citizen Plumbing & Heating Inc.

Citizen Plumbing & Heating Inc.

(38)
Hvac Installation & Repair, Backwater Valve Installation, Home Renovation Plumbing
“He was very quick and professional at his job. Fixed the leak under my bathroom sink. Positive Responsiveness, Quality, Professionalism Services Plumbing leak repair”
Emergency Services
Coupons & Offers
Family Business
Free Initial Consultation
20 Nugget Ave #9a, Scarborough, ON M1S 3A7
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High Efficiency Cooling & Heating Inc.

High Efficiency Cooling & Heating Inc.

(45)
  • Fee
  • Work
  • Rebate
“Great service from High Efficiency Cooling and Heating, replaced faulty inducer motor on Carrier Infinity furnace. My only complaint is with Carrier itself, ridiculously overpriced parts and forced to purchase whole motor assembly rather than just th...”
Emergency Services
Free Initial Consultation
In Business Since 2008
570 Alden Rd Unit 3, Markham, ON L3R 8N5
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Scarborough Heating & Air Conditioning

Scarborough Heating & Air Conditioning

(47)
Air Conditioning, Natural Gas Fitting, Heating
“I had a furnace breakdown today on one of the worst snow days we've had in a while and they responded same day, servicing problem quickly and exceeding expectations. I highly recommend Scarborough Heating & Air Conditioning.”
Free Initial Consultation
Family Business
Licensed
134 Sedgemount Dr, Scarborough, ON M1H 1X9
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Taunton Trades Ltd

Taunton Trades Ltd

(50)
  • Maintenance
  • Job
  • Hot Water
“Mother in Law had a flood in her basement on a Saturday night and destroyed the furnace and hot water tank. Taunton Trades had the furnace and hot water tank replaced and running by 4 PM on Tuesday. Fantastic service and great workmanship from the i...”
Coupons & Offers
Licensed
1621 McEwen Dr Unit 17, Whitby, ON L1N 9A5
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Berkhof's Roofing

Berkhof's Roofing

(16)
  • Price
  • Warranty
  • Crew
“Amazing work with fantastic results! They did a great job, the crew was professional and fast, they did a thorough clean and nail sweep. I highly recommend Berkhof's Roofing for all your roofing needs!”
In Business Since 2005
160 Wentworth St E, Oshawa, ON L1H 3V5
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Waza Home Comfort

Waza Home Comfort

(49)
  • Well
  • Heat Pump
  • Patient
“Frank did the service on our Furnace, Humidifier,A/C and water heater. We were very impressed with the way he explained every step along the way. I would highly recommend Waza Home Comfort.”
Emergency Services
Coupons & Offers
In Business Since 2023
Serving Ajax Area
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Wilson's Roofing

Wilson's Roofing

(50)
Skylights & Sun Tunnels, Drip Trays, Attic Insulation
“Great experience working with Jeff and his team. They were communicative, punctual and respectful - showed up on time, cleaned up after themselves and did such a good job on our roof. Would highly recommend!”
Emergency Services
Free Initial Consultation
Licensed, BBB Accredited
47 Fernhill Blvd, Oshawa, ON L1J 5J1
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City Home Comfort

City Home Comfort

(45)
Cooling, Heat Pumps, Water Heaters
“It was such a pleasure working with City Home Comfort. Shawn really took the time to explain all of my options for purchasing a new furnace. He is very knowledgeable and explained everything from the warranty to the performance of several units. Ken ...”
Family Business
Emergency Services
Offers Financing Options
Free Initial Consultation
710 Kingston Rd, Toronto, ON M4E 1R7
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HVAC, Heating & AC Services in Ajax, ON Cost Estimates

Minimum cost
$2479
Maximum cost
$14854
National Average
$7733
Avg Per Hour Rates
$206
$5308
$10250
Average price range is based on 494 cost profiles
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Average Cost $7733
Minimum cost $2479
Maximum cost $14854
Avg Per Hour Rates $206

Average range $5308 to $10250 is based on 494 cost profiles.

Why these companies made our list

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Heating & Air Conditioning, HVAC near Ajax

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