2000 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|
Total Single Attached Heating System Stock (thousands) | 6.2 | 8.8 | 9.0 | 9.3 | 9.5 | |
Heating System Stock by Heating System Type (thousands) | ||||||
Heating Oil – Normal Efficiency | 2.3 | 0.4 | 0.3 | 0.4 | 0.2 | |
Heating Oil – Medium Efficiency | 1.8 | 5.3 | 5.6 | 5.5 | 5.9 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 0.4 | 0.6 | 0.5 | 0.5 | 0.5 | |
Natural Gas – High Efficiency | 0.2 | 1.1 | 1.1 | 1.2 | 1.3 | |
Electric | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | |
Heat Pump | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Other1 | 0.6 | 0.8 | 0.8 | 0.8 | 0.9 | |
Wood | 0.3 | 0.5 | 0.5 | 0.5 | 0.5 | |
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 | 36.6 | 4.4 | 2.8 | 4.6 | 1.6 | |
Heating Oil – Medium Efficiency | 29.9 | 60.1 | 61.7 | 59.9 | 62.5 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 4.7 | 0.2 | 0.1 | 0.1 | 0.1 | |
Natural Gas – Medium Efficiency | 6.4 | 6.5 | 6.0 | 5.5 | 5.0 | |
Natural Gas – High Efficiency | 3.8 | 12.0 | 12.6 | 13.1 | 14.0 | |
Electric | 3.4 | 2.6 | 2.6 | 2.6 | 2.6 | |
Heat Pump | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Other1 | 9.9 | 9.1 | 9.1 | 9.1 | 9.0 | |
Wood | 5.3 | 5.2 | 5.2 | 5.2 | 5.2 | |
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 |