2000 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Heating System Stock (thousands) | 4,467.4 | 5,269.4 | 5,324.8 | 5,377.9 | 5,447.1 | 5,507.3 | 5,572.8 | 5,659.8 | 5,743.2 | 5,841.5 | 5,947.1 | |
Heating System Stock by Building Type (thousands) | ||||||||||||
Single Detached | 2,521.4 | 2,930.1 | 2,950.3 | 2,970.2 | 2,987.5 | 3,008.1 | 3,033.5 | 3,073.6 | 3,121.4 | 3,172.9 | 3,224.4 | |
Single Attached | 628.1 | 811.0 | 824.3 | 836.7 | 847.2 | 859.1 | 873.5 | 890.6 | 903.9 | 919.1 | 934.3 | |
Apartments | 1,293.0 | 1,502.3 | 1,524.1 | 1,544.8 | 1,586.1 | 1,613.7 | 1,639.3 | 1,668.9 | 1,691.2 | 1,722.8 | 1,761.5 | |
Mobile Homes | 24.9 | 26.0 | 26.1 | 26.2 | 26.3 | 26.4 | 26.5 | 26.6 | 26.7 | 26.8 | 26.9 | |
Shares (%) | ||||||||||||
Single Detached | 56.4 | 55.6 | 55.4 | 55.2 | 54.8 | 54.6 | 54.4 | 54.3 | 54.3 | 54.3 | 54.2 | |
Single Attached | 14.1 | 15.4 | 15.5 | 15.6 | 15.6 | 15.6 | 15.7 | 15.7 | 15.7 | 15.7 | 15.7 | |
Apartments | 28.9 | 28.5 | 28.6 | 28.7 | 29.1 | 29.3 | 29.4 | 29.5 | 29.4 | 29.5 | 29.6 | |
Mobile Homes | 0.6 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |
Heating System Stock by Heating System Type (thousands) | ||||||||||||
Heating Oil – Normal Efficiency | 153.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 210.0 | 237.1 | 230.8 | 221.2 | 209.9 | 196.9 | 182.2 | 166.3 | 149.4 | 131.9 | 114.7 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 1,355.8 | 163.3 | 86.3 | 56.5 | 31.2 | 15.0 | 4.7 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 869.0 | 1,200.6 | 1,168.7 | 1,120.3 | 1,063.9 | 999.3 | 928.7 | 855.2 | 783.2 | 713.6 | 647.3 | |
Natural Gas – High Efficiency | 694.1 | 2,114.5 | 2,244.2 | 2,355.1 | 2,479.5 | 2,594.6 | 2,713.7 | 2,844.6 | 2,974.6 | 3,112.0 | 3,249.8 | |
Electric | 673.2 | 827.7 | 848.9 | 865.0 | 886.0 | 905.4 | 923.9 | 943.8 | 960.3 | 979.8 | 1,000.3 | |
Heat Pump | 187.5 | 313.8 | 323.3 | 329.8 | 336.6 | 344.7 | 353.8 | 366.0 | 379.5 | 394.0 | 409.5 | |
Other1 | 56.5 | 99.6 | 109.0 | 118.5 | 129.6 | 141.5 | 155.6 | 172.7 | 181.9 | 192.4 | 204.2 | |
Wood | 42.0 | 40.5 | 38.1 | 35.7 | 33.7 | 31.6 | 29.5 | 27.5 | 26.6 | 25.9 | 25.2 | |
Dual Systems | ||||||||||||
Wood/Electric | 100.3 | 117.7 | 118.9 | 118.8 | 118.9 | 119.4 | 120.1 | 121.2 | 122.7 | 124.3 | 125.9 | |
Wood/Heating Oil | 91.4 | 107.6 | 108.7 | 108.6 | 108.8 | 109.3 | 110.0 | 111.0 | 112.4 | 113.9 | 115.4 | |
Natural Gas/Electric | 20.5 | 28.8 | 29.4 | 29.8 | 30.2 | 30.7 | 31.2 | 31.8 | 32.4 | 33.1 | 33.9 | |
Heating Oil/Electric | 13.3 | 18.1 | 18.4 | 18.6 | 18.8 | 19.1 | 19.4 | 19.7 | 20.1 | 20.5 | 20.9 | |
Shares (%) | ||||||||||||
Heating Oil – Normal Efficiency | 3.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 4.7 | 4.5 | 4.3 | 4.1 | 3.9 | 3.6 | 3.3 | 2.9 | 2.6 | 2.3 | 1.9 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 30.3 | 3.1 | 1.6 | 1.0 | 0.6 | 0.3 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 19.5 | 22.8 | 21.9 | 20.8 | 19.5 | 18.1 | 16.7 | 15.1 | 13.6 | 12.2 | 10.9 | |
Natural Gas – High Efficiency | 15.5 | 40.1 | 42.1 | 43.8 | 45.5 | 47.1 | 48.7 | 50.3 | 51.8 | 53.3 | 54.6 | |
Electric | 15.1 | 15.7 | 15.9 | 16.1 | 16.3 | 16.4 | 16.6 | 16.7 | 16.7 | 16.8 | 16.8 | |
Heat Pump | 4.2 | 6.0 | 6.1 | 6.1 | 6.2 | 6.3 | 6.3 | 6.5 | 6.6 | 6.7 | 6.9 | |
Other1 | 1.3 | 1.9 | 2.0 | 2.2 | 2.4 | 2.6 | 2.8 | 3.1 | 3.2 | 3.3 | 3.4 | |
Wood | 0.9 | 0.8 | 0.7 | 0.7 | 0.6 | 0.6 | 0.5 | 0.5 | 0.5 | 0.4 | 0.4 | |
Dual Systems | ||||||||||||
Wood/Electric | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.1 | 2.1 | 2.1 | 2.1 | |
Wood/Heating Oil | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 1.9 | 1.9 | |
Natural Gas/Electric | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | |
Heating Oil/Electric | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 |