Cullen Heating & Air

Comfort with Confidence



From start to finish, Cullen Heating and Air Conditioning were very professional and pleasant to deal with.  Frank Cullen properly assessed our needs and provided honest information based on our existing system and appropriate options.  Our installation appointment was promptly scheduled for the next day, the technicians arrived on time.  The installation technicians explained what [...]


Water Heaters

SPECIALS ON  WATER HEATERS;  We Supply and Install all your Water Heater needs.  All types and sizes…..Call today for a  free estimate to supply and install. Rent-to-own or purchase outright. CALL today for competitive rates…..

Generalaire 1042 Humidifiers on Special

Is your home dry? Call today to have your new humidifier installed to help maintain the humidity in your home. From;  $495.00 and up. Installed

Power Outages: Always have heat with natural gas fireplaces and inserts

Cullen Heating offers a variety of gas fireplaces and inserts to help keep your home warm when hydro is not available. Gas fireplaces will still run regardless of the power issues we all face today. Call for more information on how you can benefit from natural gas. We also do conversions of wood fireplace to [...]


WE OFFER FURNACE CLEANING AND INSPECTION, as well as air conditioner inspection, water heaters etc…

Our qualified technicians will come to your home and do an inspection on your equipment to ensure you are safe and comfortable in your home.  We office competitive rates…

CALL today to learn about our SPECIAL pricing…





HURRY and have Cullen Heating book your natural gas meter and have it installed. Allow 6 to 8 weeks for installation of your meter.
Did you know that oil is almost three times the price of natural gas?
Contact Cullen Heating and Air now to have your meter installation booked before switching to Natural Gas.

FREE in home estimates.

Not sure where to start? Call Cullen we can help!



The Ontario Power Authority rebates hi-efficiency gas furnaces with a $250.00 rebate.

The Enbridge Gas Home Energy Conservation Program offers rebates to upgrade your home and meet 15% energy savings;

This qualifies you for rebates of a minimum  of $1450.00 and a maximum $6,355.00.

CALL FOR DETAILS or visit to see if you qualify.



Cullen Heating and Air Conditioning has been providing quality service for homes and businesses since 1970. As your Durham Region heating and air conditioning specialists, we offer a number of services to keep you and your family comfortable all year round. Whether it be heating, cooling, or taking care of the air you breathe, we can do it all!

Our customers have voted us a winner of the Reader’s Choice award for Best Heating and Air Conditioning Contractor for 2007, 2008, 2009, 2010, 2011 and 2012 and now in 2013 and we have been nominated for 2015, 2016 and 2017. We’re also part of the Better Business Bureau.

Peace and quiet – with premium comfort

We are a company that thrives on 100% customer satisfaction.

  • Fully licensed and insured Gas Technicians
  • Refrigeration mechanics
  • Custom duct work installers, doing complete conversions from electric baseboard to natural gas
  • Registered with TSSA and HRAI
  • Authorized dealer for Comfortmaker, Goodman, Keeprite and American Standard.
  • Offering eco energy rebates and OPA

Cullen Heating and Air conditioning is committed to respecting the privacy of individuals and recognizes a need for the appropriate management and protection of any personal information that you agree to provide to us. We will not share your information with any third party outside of our organization, other than necessary to fulfill your request.


If you are considering switching from propane, oil or electric call now to have your natural gas meter booked as there is a six to eight weeks eta on installation of your meter.

Financing is available;  OPEN loan, equal payments for five or ten years at competitive rates.  CALL now for details on how you can qualify so you too can begin to enjoy your energy savings……vista hvac loan



CALL FOR PRICING; On your air conditioner needs today and SAVE…

FREE; Ten year parts and ten years labour warranty.

FREE:  Air Conditioner Cover

FREE:  ESA, electrical safety permit