Canada's Energy Efficiency Regulations Gas Furnaces

Annualized Fuel Utilization Efficiency (AFUE) is a measure of your furnace's heating efficiency. The higher the AFUE percentage, the more efficient the furnace.

Residential gas furnaces are prescribed as regulated products under Canada's Energy Efficiency Regulations (the Regulations). Natural Resources Canada (NRCan) has amended the Regulations to require dealers to comply with more stringent minimum energy performance standards for residential gas furnaces.

This amendment is included in Canada's Clean Air Regulatory Agenda:

For the purposes of the Regulations, a gas-fired furnace means an automatic operating gas-fired central forced-air furnace that uses propane or natural gas and has an input rate not exceeding 65.92 kW (225 000 Btu/h).

A through-the-wall gas furnace is a gas-fired furnace that is designed and marketed to be installed in an opening in an exterior wall that is fitted with a weatherized sleeve.

Furnaces for use in a mobile home or a recreational vehicle are not included in the Regulations.

The minimum performance level AFUE for gas-fired furnaces with an input rate not exceeding 65.92 kW (225,000 Btu/h) shall be 90%. There is no change to the minimum performance level for furnaces intended to be installed outdoors. It will remain at 78% AFUE.

This amended energy efficiency regulation for gas-fired furnaces will come into effect on December 31, 2009.

For through-the-wall gas-fired furnaces only, the regulation will come into effect on December 31, 2012.

All gas-fired furnaces that have their manufacturing process completed on or after the effective date, and that are subject to the Regulation, will be required to meet the stated efficiency level.