Providing The Comfort You Deserve Since 1970!

As an annual award-winning air conditioning and heating company, Cullen Heating & Air Conditioning Inc. specializes in residential and some commercial heating and cooling replacement. 

We are dedicated to providing our customers with timely service and will always try and serve the needs of our clients through education, choice and savings. 

It is our mission to provide our customers with the best products and warranties available, explain how warranties work, provide ongoing service and support to ensure warranty and assist in arranging any possible rebates back to you. 

Our expert installers and certified technicians will help your home or business feel comfortable again. 

We enjoy our community that we live in and believe in great health care. We are big supporters of the Lakeridge Health and The Hearth Place Cancer Support Centre.

Why Choose Us?

  • Fully Licensed & Insured Gas Technicians
  • Refrigeration Mechanics
  • Custom Duct Work Installers (Complete Conversions From Electric Baseboard To Natural Gas)
  • Complete Conversions From Oil To Natural Gas
  • Registered With TSSA & HRAI
  • Authorized Dealer For Comfortmaker, Goodman, Keeprite, Kingsman, GeneralAire, Navien and Energy Rebates
  • Financing/Open Loans Available
  • FREE 10 Year Parts & Labour Warranty
  • Our Company Thrives On 100% Customer Satisfaction!
  • Rebates on heat pumps up to $5,800. Call for details.

Home Energy Conservation Program

Cullen Heating & Air Conditioning, hvac contractor, furnace repair, air conditioner repair, air conditioner installation, furnace installation, water heater rentals, free estimates, conversion from oil or electric, gas meter, heat pumps, humidifiers, ductless heat pump, air cleaners, ductwork, HVAC Oshawa, Heating and Air Conditioning, Oshawa, Durham Region, Oshawa, Whitby, Clarington, Courtice, Bowmanville, Newcastle, Port Perry, Ajax and PickeringYou may be eligible to receive $5,000 back from Enbridge Gas Distribution Inc. by participating in their Home Energy Conservation Program. 

For more information on current energy incentives from Enbridge Gas Distribution Inc., visit www.enbridgesmartsavings.com

*Subject to change without notice.
Dealer can confirm rebates at time of purchase.

No matter what your HVAC needs are, we have you covered. Contact us for your entire heating or air conditioning requirements today!