2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Heating System Stock (thousands) | 12,200 | 12,344 | 12,522 | 12,713 | 12,928 | 13,143 | 13,352 | 13,558 | 13,763 | 13,936 | 14,112 | 14,279 | 14,448 | |
Heating System Stock by Building Type (thousands) | ||||||||||||||
Single Detached | 6,843 | 6,930 | 7,034 | 7,145 | 7,260 | 7,366 | 7,470 | 7,574 | 7,667 | 7,735 | 7,814 | 7,883 | 7,952 | |
Single Attached | 1,285 | 1,314 | 1,344 | 1,375 | 1,410 | 1,446 | 1,483 | 1,520 | 1,555 | 1,588 | 1,619 | 1,650 | 1,682 | |
Apartments | 3,839 | 3,866 | 3,907 | 3,954 | 4,016 | 4,084 | 4,149 | 4,211 | 4,286 | 4,355 | 4,419 | 4,483 | 4,550 | |
Mobile Homes | 233 | 234 | 236 | 239 | 243 | 246 | 249 | 253 | 256 | 258 | 260 | 262 | 264 | |
Shares (%) | ||||||||||||||
Single Detached | 56.1 | 56.1 | 56.2 | 56.2 | 56.2 | 56.0 | 56.0 | 55.9 | 55.7 | 55.5 | 55.4 | 55.2 | 55.0 | |
Single Attached | 10.5 | 10.6 | 10.7 | 10.8 | 10.9 | 11.0 | 11.1 | 11.2 | 11.3 | 11.4 | 11.5 | 11.6 | 11.6 | |
Apartments | 31.5 | 31.3 | 31.2 | 31.1 | 31.1 | 31.1 | 31.1 | 31.1 | 31.1 | 31.2 | 31.3 | 31.4 | 31.5 | |
Mobile Homes | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.8 | 1.8 | 1.8 | 1.8 | |
Heating System Stock by Heating System Type (thousands) | ||||||||||||||
Heating Oil – Normal Efficiency | 458 | 383 | 297 | 230 | 177 | 140 | 111 | 81 | 59 | 39 | 24 | 18 | 16 | |
Heating Oil – Medium Efficiency | 769 | 825 | 871 | 897 | 926 | 944 | 952 | 955 | 954 | 952 | 946 | 938 | 924 | |
Heating Oil – High Efficiency | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Natural Gas – Normal Efficiency | 2,748 | 2,577 | 2,386 | 2,186 | 1,954 | 1,719 | 1,484 | 1,255 | 1,041 | 831 | 649 | 478 | 319 | |
Natural Gas – Medium Efficiency | 1,855 | 1,997 | 2,156 | 2,306 | 2,457 | 2,592 | 2,714 | 2,820 | 2,881 | 2,919 | 2,901 | 2,875 | 2,838 | |
Natural Gas – High Efficiency | 1,072 | 1,197 | 1,356 | 1,523 | 1,714 | 1,909 | 2,121 | 2,333 | 2,566 | 2,781 | 3,026 | 3,258 | 3,488 | |
Electric | 3,405 | 3,440 | 3,490 | 3,561 | 3,646 | 3,743 | 3,854 | 3,966 | 4,084 | 4,207 | 4,334 | 4,456 | 4,580 | |
Heat Pump | 414 | 435 | 457 | 480 | 503 | 526 | 547 | 569 | 591 | 612 | 632 | 651 | 671 | |
Other1 | 129 | 130 | 131 | 133 | 135 | 137 | 140 | 144 | 149 | 155 | 160 | 167 | 174 | |
Wood | 271 | 264 | 262 | 266 | 268 | 270 | 255 | 248 | 238 | 227 | 214 | 202 | 190 | |
Dual Systems | ||||||||||||||
Wood/Electric | 603 | 611 | 618 | 625 | 631 | 637 | 641 | 645 | 651 | 656 | 661 | 664 | 669 | |
Wood/Heating Oil | 286 | 290 | 294 | 298 | 302 | 305 | 307 | 310 | 313 | 316 | 318 | 320 | 322 | |
Natural Gas/Electric | 53 | 55 | 57 | 59 | 61 | 63 | 65 | 67 | 68 | 70 | 72 | 73 | 75 | |
Heating Oil/Electric | 136 | 141 | 145 | 150 | 154 | 157 | 161 | 164 | 168 | 171 | 175 | 178 | 181 | |
Shares (%) | ||||||||||||||
Heating Oil – Normal Efficiency | 3.8 | 3.1 | 2.4 | 1.8 | 1.4 | 1.1 | 0.8 | 0.6 | 0.4 | 0.3 | 0.2 | 0.1 | 0.1 | |
Heating Oil – Medium Efficiency | 6.3 | 6.7 | 7.0 | 7.1 | 7.2 | 7.2 | 7.1 | 7.0 | 6.9 | 6.8 | 6.7 | 6.6 | 6.4 | |
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 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 22.5 | 20.9 | 19.1 | 17.2 | 15.1 | 13.1 | 11.1 | 9.3 | 7.6 | 6.0 | 4.6 | 3.3 | 2.2 | |
Natural Gas – Medium Efficiency | 15.2 | 16.2 | 17.2 | 18.1 | 19.0 | 19.7 | 20.3 | 20.8 | 20.9 | 20.9 | 20.6 | 20.1 | 19.6 | |
Natural Gas – High Efficiency | 8.8 | 9.7 | 10.8 | 12.0 | 13.3 | 14.5 | 15.9 | 17.2 | 18.6 | 20.0 | 21.4 | 22.8 | 24.1 | |
Electric | 27.9 | 27.9 | 27.9 | 28.0 | 28.2 | 28.5 | 28.9 | 29.3 | 29.7 | 30.2 | 30.7 | 31.2 | 31.7 | |
Heat Pump | 3.4 | 3.5 | 3.7 | 3.8 | 3.9 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 | 4.6 | 4.6 | |
Other1 | 1.1 | 1.1 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.1 | 1.1 | 1.1 | 1.1 | 1.2 | 1.2 | |
Wood | 2.2 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 | 1.9 | 1.8 | 1.7 | 1.6 | 1.5 | 1.4 | 1.3 | |
Dual Systems | ||||||||||||||
Wood/Electric | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 | |
Wood/Heating Oil | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.2 | 2.2 | |
Natural Gas/Electric | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |
Heating Oil/Electric | 1.1 | 1.1 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.3 |