The exterior of two homes side-by-side, each with a central air conditioner.


  • A properly set programmable thermostat can reduce heating and cooling costs by up to 10%. 
  • In the summer, it is recommended to set your thermostat to 25°C when you are home, and 28°C when away
  • Keep your house cool by making sure drapes or window coverings are closed on hot, sunny days.
  • Weather stripping around windows and doors will help keep cool air in, easing the load on your air conditioner.
  • Consider a retractable awning if you have big windows exposed to direct sunlight for much of the day.
  • Try giving your air conditioner a rest overnight by opening windows with screens.
  • Use ceilings fans to help keep rooms cool so you can turn the air conditioning down or off.  Ceiling fans use less electricity than your central air conditioner.  Set your ceiling fan in a counterclockwise direction.  This will create a cool breeze.
  • Service your central air conditioning system annually.
  • Clean or replace your window air conditioning filter monthly. Dirty filters may restrict air flow and reduce efficiency.
  • When shopping for a new central or window air conditioning, consider the newer ENERGY STAR qualified models, which are up to 70% more efficient than older models.
  • When shopping for a new central air conditioning system, look for the SEER and EER ratings, which measure the efficiency of the system.  The higher the number, the better. Consult our Heating & Cooling Checklist
  • Rebates are available for energy efficient central air conditioning systems