Cullen Heating and Air Conditioning Inc.
HVAC contractor in Oshawa, ON.
In the words of Cullen Heating and Air Conditioning Inc.
We're a family-owned HVAC company committed to keeping your home comfortable year-round. With hands-on experience, reliable service and straightforward pricing, we treat every home like it's our own. No corporate runaround - just dependable heating and cooling solutions from people who care.
- Trade
- HVAC contractor
- Business address
- 577 Ritson Rd S, Oshawa, ON L1H 5K6, Canada
- Telephone
- (905) 725-9731
- Website
- cullenheatingandair.com
- Hours
-
- Monday8:00 am - 4:00 pm
- Tuesday8:00 am - 4:00 pm
- Wednesday8:00 am - 4:00 pm
- Thursday8:00 am - 4:00 pm
- Friday8:00 am - 4:00 pm
- SaturdayOpen 24 Hours
- SundayOpen 24 Hours
From the business's Google listing, checked Oct 2026
- Register
- ON register
Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the provincial licensing body.
Google Reviews
-
Amazing price and professional installers. Replaced my AC for a very reasonable price and it works great.
Austin C.
-
Cullen came and installed our new hot water tank and AC unit in record time. Wonderful job. Love them
Jan K.
-
Very knowledgeable gentleman that came in an replaced our hot water on demand. Dana installed ours originally 18 years ago and was here to replace it with the owners son. Couldn’t be happier with the efficiency of the service.
Goldie K.
-
Great people thanks
Wayne S.
-
Amazing service again. AC not putting out cool air. Of course during our first heat wave of the summer. Was told they'd try to get here later afternoon. Any time was good by me, as I recently had surgery and not able to go anywhere yet. John arrived within the hour and identified the problem and fixed it right away. Thank you Cullen H & AC, great service again.
Laurie
-
Have been dealing with Cullen Heating and Air Conditioning Inc. Oshawa office since they installed our furnace and A/C unit 10 years ago. We get them serviced yearly, and from Maureen, the helpful voice who always answers the phone to John, the service technician we have dealt with the last few years, we couldn't be happier with their professionalism, and helpfullness. We had an A/C problem this morning (the hottest day this year). One phone call to Maureen at 8am, and John was there by 9 am, and solved the problem. We recommend Cullen to anyone looking for a helpful and reputable dealer.
Yolanda I.
-
Very good quality products. Would recommend to anyone looking for a family friendly business that cares about there employees
Devon S.
-
best customer service out there. they genuinely care about you and tsle care of you like family.
Rick J.
-
Amazing family owned business. Great office manager, techs and owners who treat all of their customers with genuine care and professionalism. This time, we had our hot water tank replaced in just a few hours and I don’t remember our water ever heating up so quickly as it does now. We have also had central air and furnace repaired and replaced by this team. They save you money whenever possible, too. Thanks again for helping us. You guys are the best!
Jackie S.
-
We are thrilled with the service we received from Cullen Heating. We had been waiting for another contractor to find a part for our gas fireplace for over 9 months with no luck. I called Cullen Heating and within a few weeks they were able to find the part, receive it and install it the very next morning. I know that it took a great deal of time and effort to find this part that apparently did not exist . Maureen did a great job and was so helpful and encouraging. John not only installed the part but took the time to go over everything and to troubleshoot, and cleaned everything so that it looks brand new. Thanks so much!
Bryston I.
About Cullen Heating and Air Conditioning Inc.
Cullen Heating and Air Conditioning's work since 1970
Cullen Heating and Air Conditioning Inc. says it has provided home-comfort work since 1970. Its work covers residential and small commercial heating and cooling, including furnace repair, heating repair, air conditioner repair, installation, replacement, and maintenance.
The company also names heat pumps, mini-splits, central ducted heat-pump installations, and air conditioning as part of its work. It says it handles both furnace and air conditioner installation, and offers a manufacturer 10-year parts warranty with registration.
Heating and cooling service in Oshawa
Cullen Heating and Air Conditioning Inc. is an authorized dealer for Carrier, Continental, Keeprite, Kingsman, GeneralAire, and Navien equipment. Financing is available subject to approval.
Reviewers commonly mention air conditioner, furnace, hot-water-tank, and fireplace-part work, along with annual maintenance, prompt visits, and staff communication.
Its regular weekday hours run from 8:00 am to 4:00 pm, with Saturday and Sunday open 24 hours. In Oshawa, Environment Canada normals for 1981-2010 show a mean temperature of 8.1 degrees Celsius, an average high of 12.1 degrees Celsius, and an average low of 4.1 degrees Celsius.
The company says its technicians are certified.
Cullen Heating and Air Conditioning equipment options
For homeowners comparing equipment paths, Cullen Heating and Air Conditioning Inc. names mini-splits alongside central ducted heat pumps rather than limiting its work to conventional furnace and air conditioner systems. It also describes service and maintenance as part of its offering, in addition to repair and installation work.
Services, brands and warranty details come from the company's own website. Ratings, hours and reviews come from Google. Town figures come from Statistics Canada and Environment Canada.
More HVAC contractors in Oshawa
About Oshawa
| Population | 175,383 (2021) |
|---|---|
| Average yearly snowfall | 105.7 centimetres |
Sources: Statistics Canada, 2021 Census. Environment and Climate Change Canada, Canadian Climate Normals 1981-2010.