Cullen Heating and Air Conditioning Inc.

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

4.4 ★★★★★ (25)

• 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.★★★★★

• Amazing

  M P.★★★★★

• John completed annual maintenance on our furnace. He resolved a humidifer issue as well. He was extremely professional and helped answer questions we had. Very satisfied with the service.

  Alexander D.★★★★★

• Involved rights under consumer protection act

  Bob H.★★★★★

• Very quick response. Technician was very thorough and Helpful.

  Phill H.★★★★★

• Great service, really friendly and knowledgeable, great communication, got a quote, 3 days later, gas heater was installed in my garage. Would strongly recommend

  MigP1020★★★★★

• Amazing staff. Wayne was superb, left the installing to his stellar staff, Scott & Tyler. Professional, courteous, polite, tidy. Cannot say enough good things about them.

  Jim U.★★★★★

• Wouldn't go anywhere else, clean down to earth, heating and Air conditioning company. Work within our budget, just what we needed. Cheers!

  Urban T.★★★★★

• My experience with this company started out good, but turned into an overall very negative experience due to a combination of rudeness, billed time spent on what seemed like personal phone calls, and high pressure sales tactics. I think the technician I dealt with is sufficiently knowledgeable to do the technical work, but arrogant and overconfident in his knowledge beyond the technical details (perhaps this was a sales tactic?). The staff answering the phone were polite and were able to set me up with a same day appointment. The gentlemen who came to service my broken A/C was essentially downright rude. Initially I chalked it up to him wanting to do his work efficiently, but over the course of the visit, he talked down to me (I got the impression it was because I was a woman, but I could be wrong), tried to convince me that running a temperature schedule was not economical (I've since read several studies proving it is economic), and guilted me for not having a regular maintenance schedule for the A/C (most people I know in the industry have told me this is not necessary). He then went to do some work outside... from inside I could hear he was on the phone having what seemed like a very casual conversation. After 5 minutes I went out to do some yard work, and it was apparent that he was not doing work and was billing me for time spent on what seemed to be a personal conversation. It took me heading in and out a few times before he hung up and continued working. I think he ended up replacing a contactor, which at least got my A/C Unit running. He then showed me how it wasn't cooling and and told me he suspected a leak. Do to the age of my A/C and type of coolant, I would need a new one. I believe all this was true, and he arrived at this conclusion quickly which is why I say he was technically competent. However, he followed this up with some scummy sales tactics. The price he offered me for a new Unit was $4k for a 1.5btu. Having looked up prices before he arrived, I knew this was quite high - he tried to convince me that the difference was 10 years of free maintenance and that the cost of A/Cs had entirely to do with maintenance... I explained to him that the Unit had run for about 10 years without any maintenance and that other quotations I had were about $2k less. To ensure fair comparison, I asked if I could call another company for a second quotation. He told me that he was going to bill me fully for the current visit if I picked up the phone, whereas if I just accepted his price then the visit might be covered. Keep in mind, that at this point I had slept only 3 hours following a night shift, and it was about 35 degC outside and I had no A/C - he knew all this. I asked him what the bill for the his visit was - it was only at $200 so I called his bluff. Sure enough, first quote I got was $2.2k-$2.4k for a 2 btu unit with 2 years of maintenance included, or I could pay $160/yr for maintenance for as long as I wanted (would take more than 10 years to make up the difference in price). At the end of the day I bought a new A/C from a different company whose technician treated me with respect and dignity, and whose prices were aligned with other companies, and who provided reasonably quick service without sales tactics.

  Krista H.★★★★★

• Great service! Very quick! Came the very next day and early! Such a nice man! Didn’t try to rip us off. VERY fair prices.

  Aj J.★★★★★

• Great customer service

  Karen D.★★★★★

• Cullen Heating and Air is my go to Heating and air company. I have used them multiple times and I have been satisfied every time. The owner is active on Facebook and easy to communicate with to set up an appointment. I messaged him on Facebook at 9 pm with an issue and he responded within 15 minutes and I had an appointment the next morning. I would highly recommend Cullen Heating and Air for all your heating and cooling need.

  Josh R.★★★★★

• At Cullen Heating and Air Conditioning Inc they treat each customer with extra care. From the quality products and services to great reasonable rates. Highly recommended. Joe Ingino Professional product reviewer Central newspaper.

  Joe I.★★★★★

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About Oshawa

Sources: Statistics Canada, 2021 Census. Environment and Climate Change Canada, Canadian Climate Normals 1981-2010.