| 2000 | 2018 | 2019 | 2020 | 2021 | ||
|---|---|---|---|---|---|---|
| Total Mobile Homes Heating System Stock (thousands) | 233 | 276 | 278 | 280 | 282 | |
Heating System Stock by Heating System Type (thousands) | ||||||
| Heating Oil – Normal Efficiency | 9 | 0 | 0 | 0 | 0 | |
| Heating Oil – Medium Efficiency | 15 | 17 | 16 | 15 | 14 | |
| Heating Oil – High Efficiency | 0 | 0 | 0 | 0 | 0 | |
| Natural Gas – Normal Efficiency | 66 | 0 | 0 | 0 | 0 | |
| Natural Gas – Medium Efficiency | 43 | 116 | 117 | 117 | 118 | |
| Natural Gas – High Efficiency | 0 | 0 | 0 | 0 | 0 | |
| Electric | 61 | 94 | 95 | 97 | 99 | |
| Heat Pump | 6 | 11 | 11 | 11 | 12 | |
| Other1 | 3 | 3 | 3 | 3 | 3 | |
| Wood | 4 | 2 | 2 | 2 | 2 | |
Dual Systems | ||||||
| Wood/Electric | 14 | 16 | 16 | 17 | 17 | |
| Wood/Heating Oil | 12 | 15 | 15 | 15 | 16 | |
| Natural Gas/Electric | 0 | 0 | 0 | 0 | 0 | |
| Heating Oil/Electric | 1 | 1 | 1 | 1 | 1 | |
Shares (%) | ||||||
| Heating Oil – Normal Efficiency | 3.9 | 0.1 | 0.0 | 0.1 | 0.0 | |
| Heating Oil – Medium Efficiency | 6.3 | 6.2 | 5.8 | 5.5 | 5.1 | |
| Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Natural Gas – Normal Efficiency | 28.4 | 0.1 | 0.1 | 0.1 | 0.0 | |
| Natural Gas – Medium Efficiency | 18.4 | 42.1 | 42.0 | 41.9 | 41.8 | |
| Natural Gas – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Electric | 26.1 | 34.0 | 34.4 | 34.7 | 35.0 | |
| Heat Pump | 2.5 | 3.9 | 3.9 | 4.0 | 4.1 | |
| Other1 | 1.3 | 1.1 | 1.1 | 1.1 | 1.1 | |
| Wood | 1.7 | 0.8 | 0.8 | 0.7 | 0.7 | |
Dual Systems | ||||||
| Wood/Electric | 5.8 | 5.9 | 5.9 | 6.0 | 6.0 | |
| Wood/Heating Oil | 5.1 | 5.5 | 5.5 | 5.5 | 5.6 | |
| Natural Gas/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Heating Oil/Electric | 0.4 | 0.5 | 0.5 | 0.5 | 0.5 | |