Residential Sector
Ontario
Table 21: Heating System Stock by Building Type and Heating System Type
  1990   2011 2012 2013 2014 2015
Total Heating System Stock (thousands) 3,789.9   5,238.3 5,293.4 5,411.4 5,464.6 5,532.2

Heating System Stock by Building Type (thousands)
Single Detached 2,142.0   2,904.0 2,927.4 2,970.1 2,990.5 3,014.1
Single Attached 482.7   773.4 785.4 810.3 822.9 834.5
Apartments 1,135.5   1,534.1 1,553.7 1,603.9 1,623.9 1,656.2
Mobile Homes 29.6   26.8 26.9 27.2 27.3 27.4

Shares (%)
Single Detached 56.5   55.4 55.3 54.9 54.7 54.5
Single Attached 12.7   14.8 14.8 15.0 15.1 15.1
Apartments 30.0   29.3 29.4 29.6 29.7 29.9
Mobile Homes 0.8   0.5 0.5 0.5 0.5 0.5

Heating System Stock by Heating System Type (thousands)
Heating Oil – Normal Efficiency 508.4   0.0 0.0 0.0 0.0 0.0
Heating Oil – Medium Efficiency 14.3   219.5 216.0 210.7 201.7 191.4
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 1,929.4   227.2 159.4 85.6 55.7 30.7
Natural Gas – Medium Efficiency 93.3   866.7 848.6 823.0 781.1 731.9
Natural Gas – High Efficiency 194.1   727.5 812.5 946.7 1,051.2 1,164.6
Electric 700.0   2,578.3 2,621.5 2,690.5 2,710.9 2,737.6
Heat Pump 104.9   297.2 308.2 321.7 329.0 338.0
Other1 23.2   31.4 31.8 32.6 32.7 33.0
Wood 37.1   27.3 27.7 28.7 29.2 29.7

Dual Systems
Wood/Electric 85.5   114.0 115.8 117.4 117.6 118.3
Wood/Heating Oil 77.1   104.2 105.8 107.4 107.6 108.3
Natural Gas/Electric 12.6   27.6 28.4 29.1 29.5 30.1
Heating Oil/Electric 9.9   17.4 17.8 18.2 18.5 18.8

Shares (%)
Heating Oil – Normal Efficiency 13.4   0.0 0.0 0.0 0.0 0.0
Heating Oil – Medium Efficiency 0.4   4.2 4.1 3.9 3.7 3.5
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 50.9   4.3 3.0 1.6 1.0 0.6
Natural Gas – Medium Efficiency 2.5   16.5 16.0 15.2 14.3 13.2
Natural Gas – High Efficiency 5.1   13.9 15.3 17.5 19.2 21.1
Electric 18.5   49.2 49.5 49.7 49.6 49.5
Heat Pump 2.8   5.7 5.8 5.9 6.0 6.1
Other1 0.6   0.6 0.6 0.6 0.6 0.6
Wood 1.0   0.5 0.5 0.5 0.5 0.5

Dual Systems
Wood/Electric 2.3   2.2 2.2 2.2 2.2 2.1
Wood/Heating Oil 2.0   2.0 2.0 2.0 2.0 2.0
Natural Gas/Electric 0.3   0.5 0.5 0.5 0.5 0.5
Heating Oil/Electric 0.3   0.3 0.3 0.3 0.3 0.3

Footnotes:

1) “Other” includes coal and propane.