577 Ritson Rd. S., Oshawa
Durham Region
GTA: 1-866-573-3116

See What Some Of Our Clients Have To Say!

At Cullen Heating & Air Conditioning Inc. we are extremely proud of the work we have done over the years. Take a look at what some of our customers have to say. If you’re a previous Cullen’s customer, tell us how we did!


“The staff were the best trades people we have ever had in our home, a pleasure to work with!”
- Bill & Kathy P

“Prompt and professional!”
- Mike H.

“The whole experience was fabulous. I/we would highly recommend you to all! Thank you for taking such care!!!”
- David P.


“Very pleased with explanation of work done.”
- Leroy C.

“Thanks for providing the right solution and hookup to a/c & furnace in the best configuration possible with limited space & access.”
- George R.

“The install went very well. The technicians were very friendly and left our home in a very clean state.”
- Anthony R.