Residential Sector
Ontario
Table 23: Single Attached Heating System Stock by Heating System Type
  1990   2012 2013 2014 2015
Total Single Attached Heating System Stock (thousands) 482.7   785.4 810.3 822.9 834.5

Heating System Stock by Heating System Type (thousands)
Heating Oil – Normal Efficiency 71.9   1.1 0.1 0.0 0.0
Heating Oil – Medium Efficiency 1.6   46.0 48.5 50.5 52.1
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 246.3   30.7 20.5 10.4 1.8
Natural Gas – Medium Efficiency 13.0   183.9 180.3 174.9 168.1
Natural Gas – High Efficiency 27.1   338.1 369.2 392.2 414.6
Electric 96.7   124.1 127.7 129.2 130.5
Heat Pump 9.3   29.0 30.7 32.0 33.1
Other1 3.0   8.9 9.2 9.3 9.4
Wood 10.6   17.2 17.7 18.0 18.2

Dual Systems
Wood/Electric 1.0   1.5 1.6 1.6 1.6
Wood/Heating Oil 1.1   1.5 1.6 1.6 1.6
Natural Gas/Electric 0.8   2.5 2.5 2.6 2.7
Heating Oil/Electric 0.3   0.8 0.8 0.8 0.8

Shares (%)
Heating Oil – Normal Efficiency 14.9   0.1 0.0 0.0 0.0
Heating Oil – Medium Efficiency 0.3   5.9 6.0 6.1 6.2
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 51.0   3.9 2.5 1.3 0.2
Natural Gas – Medium Efficiency 2.7   23.4 22.3 21.3 20.1
Natural Gas – High Efficiency 5.6   43.1 45.6 47.7 49.7
Electric 20.0   15.8 15.8 15.7 15.6
Heat Pump 1.9   3.7 3.8 3.9 4.0
Other1 0.6   1.1 1.1 1.1 1.1
Wood 2.2   2.2 2.2 2.2 2.2

Dual Systems
Wood/Electric 0.2   0.2 0.2 0.2 0.2
Wood/Heating Oil 0.2   0.2 0.2 0.2 0.2
Natural Gas/Electric 0.2   0.3 0.3 0.3 0.3
Heating Oil/Electric 0.1   0.1 0.1 0.1 0.1

Footnotes:

1) “Other” includes coal and propane.