Residential Sector
Canada
Table 12: Space Heating GHG Emissions by System Type – Excluding Electricity-Related Emissions
  2000   2018 2019 2020 2021
Total Space Heating GHG Emissions Excluding Electricity (Mt of CO2e) 35.1   32.8 31.9 28.9 27.5

GHG Emissions by System Type (Mt of CO2e)
Heating Oil – Normal Efficiency 2.4   0.0 0.0 0.0 0.0
Heating Oil – Medium Efficiency 3.9   2.4 2.2 1.8 1.5
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 13.3   0.0 0.0 0.0 0.0
Natural Gas – Medium Efficiency 7.2   8.7 8.0 6.8 6.0
Natural Gas – High Efficiency 3.4   16.8 17.1 16.1 15.9
Electric 0.0   0.0 0.0 0.0 0.0
Heat Pump 0.0   0.0 0.0 0.0 0.0
Other1 0.7   0.9 0.9 0.8 0.9
Wood 0.4   0.2 0.2 0.2 0.1

Dual Systems
Wood/Electric 1.5   1.8 1.7 1.5 1.4
Wood/Heating Oil 1.6   1.2 1.1 1.0 1.0
Natural Gas/Electric 0.2   0.3 0.3 0.3 0.3
Heating Oil/Electric 0.7   0.4 0.5 0.4 0.4

Shares (%)
Heating Oil – Normal Efficiency 6.8   0.0 0.0 0.0 0.0
Heating Oil – Medium Efficiency 11.0   7.2 6.8 6.3 5.6
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 37.7   0.0 0.0 0.0 0.0
Natural Gas – Medium Efficiency 20.4   26.6 25.0 23.6 21.7
Natural Gas – High Efficiency 9.6   51.3 53.6 55.6 57.6
Electric 0.0   0.0 0.0 0.0 0.0
Heat Pump 0.0   0.0 0.0 0.0 0.0
Other1 2.0   2.7 2.8 2.8 3.2
Wood 1.2   0.6 0.5 0.5 0.5

Dual Systems
Wood/Electric 4.3   5.6 5.2 5.2 5.3
Wood/Heating Oil 4.5   3.7 3.6 3.6 3.5
Natural Gas/Electric 0.5   1.0 1.0 1.0 1.1
Heating Oil/Electric 2.0   1.4 1.4 1.3 1.4
GHG Intensity (tonne/TJ) 39.8   34.1 33.5 33.1 32.8
Heat Gains (PJ) 96.0   103.0 107.8 101.3 98.9
Heating Degree-Day Index 0.96   0.95 0.98 0.88 0.85

Footnotes:

1) “Other” includes coal and propane.