2000 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|
Total Heating System Stock (thousands) | 377.9 | 446.0 | 449.8 | 453.6 | 458.0 | |
Heating System Stock by Building Type (thousands) | ||||||
Single Detached | 255.9 | 290.7 | 292.1 | 293.6 | 295.3 | |
Single Attached | 23.8 | 32.6 | 33.1 | 33.7 | 34.3 | |
Apartments | 82.8 | 105.2 | 107.0 | 108.7 | 110.6 | |
Mobile Homes | 15.5 | 17.5 | 17.6 | 17.7 | 17.8 | |
Shares (%) | ||||||
Single Detached | 67.7 | 65.2 | 64.9 | 64.7 | 64.5 | |
Single Attached | 6.3 | 7.3 | 7.4 | 7.4 | 7.5 | |
Apartments | 21.9 | 23.6 | 23.8 | 24.0 | 24.1 | |
Mobile Homes | 4.1 | 3.9 | 3.9 | 3.9 | 3.9 | |
Heating System Stock by Heating System Type (thousands) | ||||||
Heating Oil – Normal Efficiency | 91.4 | 0.6 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 105.0 | 134.3 | 134.3 | 131.1 | 130.8 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 0.6 | 0.1 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 2.1 | 2.0 | 1.9 | 1.7 | 1.5 | |
Natural Gas – High Efficiency | 2.2 | 9.2 | 9.9 | 10.7 | 11.2 | |
Electric | 86.2 | 195.2 | 198.7 | 203.6 | 207.0 | |
Heat Pump | 11.5 | 21.3 | 21.7 | 22.3 | 22.8 | |
Other1 | 7.6 | 9.4 | 9.5 | 9.9 | 10.3 | |
Wood | 15.4 | 11.3 | 11.1 | 11.1 | 10.9 | |
Dual Systems | ||||||
Wood/Electric | 23.2 | 25.9 | 25.9 | 26.1 | 26.2 | |
Wood/Heating Oil | 31.6 | 35.0 | 35.0 | 35.3 | 35.4 | |
Natural Gas/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil/Electric | 1.1 | 1.7 | 1.7 | 1.8 | 1.8 | |
Shares (%) | ||||||
Heating Oil – Normal Efficiency | 24.2 | 0.1 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 27.8 | 30.1 | 29.9 | 28.9 | 28.5 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 0.6 | 0.5 | 0.4 | 0.4 | 0.3 | |
Natural Gas – High Efficiency | 0.6 | 2.1 | 2.2 | 2.4 | 2.5 | |
Electric | 22.8 | 43.8 | 44.2 | 44.9 | 45.2 | |
Heat Pump | 3.0 | 4.8 | 4.8 | 4.9 | 5.0 | |
Other1 | 2.0 | 2.1 | 2.1 | 2.2 | 2.2 | |
Wood | 4.1 | 2.5 | 2.5 | 2.4 | 2.4 | |
Dual Systems | ||||||
Wood/Electric | 6.1 | 5.8 | 5.8 | 5.8 | 5.7 | |
Wood/Heating Oil | 8.4 | 7.9 | 7.8 | 7.8 | 7.7 | |
Natural Gas/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil/Electric | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 |