2000 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|
Total Heating System Stock (thousands) | 401.8 | 488.5 | 491.4 | 493.6 | 496.8 | |
Heating System Stock by Building Type (thousands) | ||||||
Single Detached | 293.9 | 342.3 | 343.4 | 344.4 | 345.8 | |
Single Attached | 22.0 | 36.9 | 37.3 | 37.7 | 38.3 | |
Apartments | 74.2 | 96.1 | 97.4 | 98.2 | 99.3 | |
Mobile Homes | 11.6 | 13.2 | 13.3 | 13.3 | 13.4 | |
Shares (%) | ||||||
Single Detached | 73.2 | 70.1 | 69.9 | 69.8 | 69.6 | |
Single Attached | 5.5 | 7.5 | 7.6 | 7.6 | 7.7 | |
Apartments | 18.5 | 19.7 | 19.8 | 19.9 | 20.0 | |
Mobile Homes | 2.9 | 2.7 | 2.7 | 2.7 | 2.7 | |
Heating System Stock by Heating System Type (thousands) | ||||||
Heating Oil – Normal Efficiency | 7.3 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 8.2 | 9.1 | 8.3 | 7.4 | 6.3 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 193.7 | 1.7 | 1.0 | 0.5 | 0.1 | |
Natural Gas – Medium Efficiency | 86.9 | 111.7 | 104.8 | 98.0 | 91.1 | |
Natural Gas – High Efficiency | 65.2 | 282.4 | 290.8 | 298.5 | 307.0 | |
Electric | 11.6 | 53.4 | 56.0 | 58.6 | 61.2 | |
Heat Pump | 6.7 | 13.1 | 13.5 | 13.8 | 14.1 | |
Other1 | 6.8 | 6.2 | 6.1 | 6.1 | 6.2 | |
Wood | 6.1 | 1.0 | 0.9 | 0.8 | 0.7 | |
Dual Systems | ||||||
Wood/Electric | 2.5 | 2.3 | 2.3 | 2.3 | 2.3 | |
Wood/Heating Oil | 4.1 | 3.7 | 3.7 | 3.7 | 3.7 | |
Natural Gas/Electric | 1.5 | 2.2 | 2.3 | 2.3 | 2.4 | |
Heating Oil/Electric | 1.1 | 1.7 | 1.7 | 1.7 | 1.8 | |
Shares (%) | ||||||
Heating Oil – Normal Efficiency | 1.8 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 2.1 | 1.9 | 1.7 | 1.5 | 1.3 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 48.2 | 0.3 | 0.2 | 0.1 | 0.0 | |
Natural Gas – Medium Efficiency | 21.6 | 22.9 | 21.3 | 19.8 | 18.3 | |
Natural Gas – High Efficiency | 16.2 | 57.8 | 59.2 | 60.5 | 61.8 | |
Electric | 2.9 | 10.9 | 11.4 | 11.9 | 12.3 | |
Heat Pump | 1.7 | 2.7 | 2.7 | 2.8 | 2.8 | |
Other1 | 1.7 | 1.3 | 1.2 | 1.2 | 1.2 | |
Wood | 1.5 | 0.2 | 0.2 | 0.2 | 0.1 | |
Dual Systems | ||||||
Wood/Electric | 0.6 | 0.5 | 0.5 | 0.5 | 0.5 | |
Wood/Heating Oil | 1.0 | 0.8 | 0.8 | 0.7 | 0.7 | |
Natural Gas/Electric | 0.4 | 0.5 | 0.5 | 0.5 | 0.5 | |
Heating Oil/Electric | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 |