Changes to Efficiency Standards for Gas Furnaces
A national minimum energy performance standard for residential gas furnaces went into effect on December 31, 2009. This standard applies to virtually all gas furnaces sold in Canada and will require a minimum fuel efficiency level of 90%. This level of efficiency is achieved by using well-established “condensing technology” where the products of combustion are vented through a plastic pipe, most commonly routed through a side wall.
The implementation of this standard is part of Canada’s ongoing efforts to address climate change and improve the environment. Energy efficient furnaces are also cost-effective for consumers. The installation of a condensing gas furnace (minimum 90% efficiency) will result in a fuel consumption and cost reduction of about 12% when compared to furnaces at the older standard. The dollar amount will depend on the house size and heat loss.
The first-time installation of a high efficiency gas furnace typically requires changes to the venting system. In some cases, hot water heater venting alterations may be necessary as well. Depending on the home, the additional costs will be offset by future efficiency gains and operating cost savings.
There may be some situations, however, such as narrow, attached houses with front and rear obstructions, closely spaced doorways and large windows or full-width porches and/or decks where the installation is more complex. Please consult with a qualified professional for questions concerning the installation process.
For further information about Canada's Energy Efficiency Regulations about gas furnaces, please visit Natural Resources Canada's website.