| 2000 | 2017 | 2018 | ||
|---|---|---|---|---|
| Total Single Detached Water Heater Stock (thousands) | 733.7 | 1,038.1 | 1,054.4 | |
Water Heater Stock by Energy Source (thousands) | ||||
| Electricity | 44.8 | 80.1 | 81.9 | |
| Natural Gas | 679.6 | 929.1 | 942.6 | |
| Heating Oil | 3.4 | 12.8 | 13.2 | |
| Steam | 0.0 | 0.0 | 0.0 | |
| Other1 | 5.2 | 13.9 | 14.4 | |
| Wood | 0.8 | 2.2 | 2.3 | |
Shares (%) | ||||
| Electricity | 6.1 | 7.7 | 7.8 | |
| Natural Gas | 92.6 | 89.5 | 89.4 | |
| Heating Oil | 0.5 | 1.2 | 1.3 | |
| Steam | 0.0 | 0.0 | 0.0 | |
| Other1 | 0.7 | 1.3 | 1.4 | |
| Wood | 0.1 | 0.2 | 0.2 | |
| Total Single Attached Water Heater Stock (thousands) | 133.7 | 241.8 | 249.1 | |
Water Heater Stock by Energy Source (thousands) | ||||
| Electricity | 8.2 | 18.7 | 19.4 | |
| Natural Gas | 123.8 | 216.4 | 222.7 | |
| Heating Oil | 0.6 | 3.0 | 3.1 | |
| Steam | 0.0 | 0.0 | 0.0 | |
| Other1 | 0.9 | 3.2 | 3.4 | |
| Wood | 0.1 | 0.5 | 0.5 | |
Shares (%) | ||||
| Electricity | 6.1 | 7.7 | 7.8 | |
| Natural Gas | 92.6 | 89.5 | 89.4 | |
| Heating Oil | 0.5 | 1.2 | 1.3 | |
| Steam | 0.0 | 0.0 | 0.0 | |
| Other1 | 0.7 | 1.3 | 1.4 | |
| Wood | 0.1 | 0.2 | 0.2 | |