Heating & Cooling


Ottawa’s cold climate means that space heating accounts for up to 61% of the energy used in the average Ottawa home.

Boilers use gas or oil to provide space heating and hot water to your home. Boilers distribute heat using radiators or in-floor radiant heating, eliminating the need for pre-existing duct systems.

What to Look For

  • Gas and oil boilers are subject to Canada’s Energy Efficiency Regulations, which sets minimum performance standards for their energy efficiency. All boilers sold in Canada are energy efficient.
  • Check the Annual Fuel Utilization Efficiency (AFUE) rating, the minimum should be between 82 and 84 per cent.
  • Replacing your oil boiler? Consider switching to a natural gas boiler which tends to produce less waste and fewer harmful emissions.

Things to Consider

  • Insulate the hot water pipes.
  • Empty or “bleed” the air from the radiators once or twice a year so that they can fill fully with water.
  • Vacuum the radiators to prevent dirt and dust from building up.
  • Ensure that the level of water in the expansion tank is correct.
  • Before you replace your boiler, get a home energy evaluation, which can help you understand how your home currently uses energy.
  • Check with your municipality, utility or retailer to see if there are any rebates on boilers available.


$3,000 to $8,000

Source: Natural Resources Canada