Contact Us

Cullen Heating & Air Conditioning Inc.

Our experienced team of HVAC specialists looks forward to helping you improve your home or business comfort with efficient heating and air conditioning!

577 Ritson Road South,
Oshawa, Ontario
L1H 5K6

Phone: 905-725-9731
Toll Free: 1-866-573-3116
Fax: 905.725.0886

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Office Hours

Monday – Friday • 8:00AM – 4:00PM

After-hours calls are received and returned as soon as possible. Please feel free to leave us a message on evenings and weekends.

Scheduling an appointment just got easier! Cullen Heating & Air Conditioning now offers ONLINE scheduling for your convenience. Quickly fill out our online form, and we will be diligent in confirming your appointment!