2000 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|
Total Heating System Stock (thousands) | 31.6 | 44.1 | 45.1 | 46.1 | 47.1 | |
Heating System Stock by Building Type (thousands) | ||||||
Single Detached | 16.9 | 22.7 | 23.2 | 23.7 | 24.3 | |
Single Attached | 6.2 | 8.8 | 9.0 | 9.3 | 9.5 | |
Apartments | 5.8 | 9.5 | 9.7 | 9.9 | 10.1 | |
Mobile Homes | 2.8 | 3.2 | 3.2 | 3.2 | 3.2 | |
Shares (%) | ||||||
Single Detached | 53.5 | 51.3 | 51.4 | 51.4 | 51.5 | |
Single Attached | 19.5 | 19.9 | 20.0 | 20.1 | 20.1 | |
Apartments | 18.3 | 21.6 | 21.6 | 21.5 | 21.5 | |
Mobile Homes | 8.8 | 7.2 | 7.1 | 6.9 | 6.8 | |
Heating System Stock by Heating System Type (thousands) | ||||||
Heating Oil – Normal Efficiency | 11.7 | 1.9 | 1.4 | 2.0 | 0.9 | |
Heating Oil – Medium Efficiency | 9.1 | 26.4 | 27.5 | 27.5 | 29.1 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 1.8 | 0.1 | 0.1 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 2.2 | 3.4 | 3.2 | 3.1 | 3.0 | |
Natural Gas – High Efficiency | 1.1 | 5.0 | 5.3 | 5.7 | 6.2 | |
Electric | 1.1 | 1.1 | 1.2 | 1.2 | 1.2 | |
Heat Pump | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Other1 | 3.1 | 4.0 | 4.1 | 4.2 | 4.2 | |
Wood | 1.7 | 2.3 | 2.3 | 2.4 | 2.4 | |
Dual Systems | ||||||
Wood/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Wood/Heating Oil | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Shares (%) | ||||||
Heating Oil – Normal Efficiency | 36.9 | 4.2 | 3.2 | 4.4 | 2.0 | |
Heating Oil – Medium Efficiency | 28.7 | 59.9 | 61.0 | 59.7 | 61.8 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 5.6 | 0.2 | 0.1 | 0.1 | 0.1 | |
Natural Gas – Medium Efficiency | 6.9 | 7.7 | 7.2 | 6.7 | 6.3 | |
Natural Gas – High Efficiency | 3.6 | 11.2 | 11.8 | 12.3 | 13.2 | |
Electric | 3.3 | 2.6 | 2.6 | 2.6 | 2.6 | |
Heat Pump | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Other1 | 9.7 | 9.0 | 9.0 | 9.0 | 9.0 | |
Wood | 5.2 | 5.2 | 5.2 | 5.2 | 5.1 | |
Dual Systems | ||||||
Wood/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Wood/Heating Oil | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |