2000 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Heating System Stock (thousands) | 3,147.2 | 3,669.1 | 3,706.8 | 3,743.9 | 3,775.1 | 3,810.0 | 3,847.1 | 3,886.4 | 3,926.8 | 3,969.9 | 4,020.3 | |
Heating System Stock by Building Type (thousands) | ||||||||||||
Single Detached | 1,443.8 | 1,670.5 | 1,682.0 | 1,691.5 | 1,699.3 | 1,706.9 | 1,714.4 | 1,721.5 | 1,728.0 | 1,734.6 | 1,745.4 | |
Single Attached | 236.6 | 297.2 | 301.7 | 305.9 | 309.8 | 314.0 | 318.8 | 323.5 | 328.2 | 333.1 | 339.0 | |
Apartments | 1,426.5 | 1,657.2 | 1,678.7 | 1,701.9 | 1,721.1 | 1,744.3 | 1,768.9 | 1,796.2 | 1,825.4 | 1,856.8 | 1,890.3 | |
Mobile Homes | 40.4 | 44.2 | 44.4 | 44.6 | 44.8 | 44.9 | 45.1 | 45.2 | 45.3 | 45.4 | 45.6 | |
Shares (%) | ||||||||||||
Single Detached | 45.9 | 45.5 | 45.4 | 45.2 | 45.0 | 44.8 | 44.6 | 44.3 | 44.0 | 43.7 | 43.4 | |
Single Attached | 7.5 | 8.1 | 8.1 | 8.2 | 8.2 | 8.2 | 8.3 | 8.3 | 8.4 | 8.4 | 8.4 | |
Apartments | 45.3 | 45.2 | 45.3 | 45.5 | 45.6 | 45.8 | 46.0 | 46.2 | 46.5 | 46.8 | 47.0 | |
Mobile Homes | 1.3 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.1 | 1.1 | |
Heating System Stock by Heating System Type (thousands) | ||||||||||||
Heating Oil – Normal Efficiency | 74.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 313.1 | 313.0 | 307.9 | 300.7 | 290.7 | 276.7 | 258.7 | 236.6 | 211.2 | 183.4 | 154.5 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 123.4 | 1.6 | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 17.2 | 26.1 | 24.9 | 23.8 | 22.5 | 21.4 | 20.2 | 19.2 | 18.5 | 17.9 | 17.5 | |
Natural Gas – High Efficiency | 22.9 | 136.3 | 144.7 | 152.1 | 156.8 | 163.8 | 168.0 | 172.4 | 176.2 | 180.3 | 184.5 | |
Electric | 1,762.3 | 2,263.5 | 2,293.0 | 2,322.8 | 2,350.9 | 2,383.1 | 2,422.0 | 2,465.7 | 2,509.0 | 2,556.1 | 2,610.0 | |
Heat Pump | 136.9 | 203.9 | 208.9 | 213.9 | 219.1 | 224.4 | 230.3 | 236.8 | 243.7 | 251.0 | 259.0 | |
Other1 | 4.2 | 7.8 | 8.7 | 9.7 | 10.8 | 12.0 | 13.2 | 14.5 | 15.3 | 16.2 | 17.1 | |
Wood | 131.5 | 79.6 | 75.3 | 71.3 | 67.2 | 63.4 | 59.8 | 56.2 | 55.2 | 54.2 | 53.3 | |
Dual Systems | ||||||||||||
Wood/Electric | 345.9 | 374.0 | 376.2 | 378.7 | 382.0 | 385.6 | 389.9 | 394.8 | 401.0 | 407.4 | 414.1 | |
Wood/Heating Oil | 91.9 | 99.6 | 100.1 | 100.9 | 101.7 | 102.7 | 103.9 | 105.2 | 106.8 | 108.6 | 110.4 | |
Natural Gas/Electric | 13.3 | 18.5 | 18.9 | 19.3 | 19.8 | 20.2 | 20.7 | 21.3 | 21.9 | 22.5 | 23.1 | |
Heating Oil/Electric | 110.5 | 145.2 | 147.8 | 150.6 | 153.5 | 156.7 | 160.1 | 163.8 | 168.0 | 172.3 | 176.7 | |
Shares (%) | ||||||||||||
Heating Oil – Normal Efficiency | 2.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 9.9 | 8.5 | 8.3 | 8.0 | 7.7 | 7.3 | 6.7 | 6.1 | 5.4 | 4.6 | 3.8 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 3.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 0.5 | 0.7 | 0.7 | 0.6 | 0.6 | 0.6 | 0.5 | 0.5 | 0.5 | 0.5 | 0.4 | |
Natural Gas – High Efficiency | 0.7 | 3.7 | 3.9 | 4.1 | 4.2 | 4.3 | 4.4 | 4.4 | 4.5 | 4.5 | 4.6 | |
Electric | 56.0 | 61.7 | 61.9 | 62.0 | 62.3 | 62.5 | 63.0 | 63.4 | 63.9 | 64.4 | 64.9 | |
Heat Pump | 4.3 | 5.6 | 5.6 | 5.7 | 5.8 | 5.9 | 6.0 | 6.1 | 6.2 | 6.3 | 6.4 | |
Other1 | 0.1 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 | |
Wood | 4.2 | 2.2 | 2.0 | 1.9 | 1.8 | 1.7 | 1.6 | 1.4 | 1.4 | 1.4 | 1.3 | |
Dual Systems | ||||||||||||
Wood/Electric | 11.0 | 10.2 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.2 | 10.2 | 10.3 | 10.3 | |
Wood/Heating Oil | 2.9 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | |
Natural Gas/Electric | 0.4 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | |
Heating Oil/Electric | 3.5 | 4.0 | 4.0 | 4.0 | 4.1 | 4.1 | 4.2 | 4.2 | 4.3 | 4.3 | 4.4 |