2000 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|
Total Single Attached Heating System Stock (thousands) | 174.1 | 264.7 | 269.9 | 275.3 | 281.9 | |
Heating System Stock by Heating System Type (thousands) | ||||||
Heating Oil – Normal Efficiency | 8.9 | 0.4 | 0.3 | 0.4 | 0.2 | |
Heating Oil – Medium Efficiency | 4.7 | 11.1 | 11.1 | 10.9 | 11.0 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 41.8 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 34.4 | 47.8 | 44.8 | 41.8 | 38.8 | |
Natural Gas – High Efficiency | 19.7 | 74.8 | 79.3 | 83.9 | 89.2 | |
Electric | 50.5 | 111.1 | 114.5 | 118.1 | 122.1 | |
Heat Pump | 3.1 | 7.7 | 8.0 | 8.3 | 8.7 | |
Other1 | 3.5 | 2.7 | 2.7 | 2.7 | 2.7 | |
Wood | 5.9 | 6.6 | 6.6 | 6.7 | 6.7 | |
Dual Systems | ||||||
Wood/Electric | 1.1 | 1.5 | 1.6 | 1.6 | 1.6 | |
Wood/Heating Oil | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | |
Natural Gas/Electric | 0.4 | 0.7 | 0.7 | 0.8 | 0.8 | |
Heating Oil/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Shares (%) | ||||||
Heating Oil – Normal Efficiency | 5.1 | 0.1 | 0.1 | 0.2 | 0.1 | |
Heating Oil – Medium Efficiency | 2.7 | 4.2 | 4.1 | 3.9 | 3.9 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 24.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 19.8 | 18.1 | 16.6 | 15.2 | 13.8 | |
Natural Gas – High Efficiency | 11.3 | 28.2 | 29.4 | 30.5 | 31.6 | |
Electric | 29.0 | 42.0 | 42.4 | 42.9 | 43.3 | |
Heat Pump | 1.8 | 2.9 | 3.0 | 3.0 | 3.1 | |
Other1 | 2.0 | 1.0 | 1.0 | 1.0 | 1.0 | |
Wood | 3.4 | 2.5 | 2.5 | 2.4 | 2.4 | |
Dual Systems | ||||||
Wood/Electric | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | |
Wood/Heating Oil | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
Natural Gas/Electric | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | |
Heating Oil/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |