2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Single Detached Heating System Stock (thousands) | 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 | 8,018 | 8,080 | 8,135 | |
Heating System Stock by Heating System Type (thousands) | |||||||||||||||||
Heating Oil – Normal Efficiency | 189 | 151 | 111 | 77 | 58 | 47 | 37 | 28 | 19 | 9 | 4 | 2 | 2 | 2 | 2 | 2 | |
Heating Oil – Medium Efficiency | 418 | 449 | 475 | 490 | 506 | 517 | 522 | 523 | 523 | 521 | 516 | 509 | 499 | 488 | 471 | 451 | |
Heating Oil – High Efficiency | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Natural Gas – Normal Efficiency | 1,553 | 1,449 | 1,335 | 1,217 | 1,078 | 939 | 799 | 664 | 538 | 414 | 307 | 209 | 117 | 37 | 13 | 2 | |
Natural Gas – Medium Efficiency | 1,090 | 1,173 | 1,266 | 1,351 | 1,434 | 1,506 | 1,571 | 1,626 | 1,653 | 1,666 | 1,651 | 1,631 | 1,605 | 1,566 | 1,508 | 1,437 | |
Natural Gas – High Efficiency | 624 | 699 | 792 | 890 | 999 | 1,107 | 1,224 | 1,343 | 1,469 | 1,582 | 1,715 | 1,841 | 1,964 | 2,087 | 2,190 | 2,289 | |
Electric | 1,538 | 1,549 | 1,567 | 1,595 | 1,628 | 1,666 | 1,712 | 1,761 | 1,809 | 1,861 | 1,916 | 1,964 | 2,012 | 2,060 | 2,098 | 2,135 | |
Heat Pump | 350 | 367 | 386 | 406 | 425 | 443 | 460 | 478 | 496 | 512 | 528 | 544 | 559 | 575 | 587 | 599 | |
Other1 | 76 | 76 | 76 | 77 | 78 | 80 | 81 | 83 | 86 | 88 | 91 | 94 | 98 | 101 | 105 | 109 | |
Wood | 52 | 47 | 44 | 44 | 43 | 41 | 33 | 27 | 22 | 17 | 13 | 10 | 7 | 4 | 2 | 2 | |
Dual Systems | |||||||||||||||||
Wood/Electric | 557 | 564 | 571 | 577 | 583 | 588 | 592 | 596 | 601 | 606 | 610 | 613 | 616 | 620 | 622 | 625 | |
Wood/Heating Oil | 260 | 264 | 267 | 271 | 274 | 277 | 279 | 281 | 284 | 287 | 289 | 290 | 292 | 293 | 293 | 294 | |
Natural Gas/Electric | 39 | 41 | 42 | 44 | 45 | 46 | 47 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | |
Heating Oil/Electric | 96 | 99 | 102 | 105 | 108 | 110 | 113 | 115 | 118 | 120 | 123 | 125 | 127 | 129 | 131 | 133 | |
Shares (%) | |||||||||||||||||
Heating Oil – Normal Efficiency | 2.8 | 2.2 | 1.6 | 1.1 | 0.8 | 0.6 | 0.5 | 0.4 | 0.2 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 6.1 | 6.5 | 6.7 | 6.9 | 7.0 | 7.0 | 7.0 | 6.9 | 6.8 | 6.7 | 6.6 | 6.5 | 6.3 | 6.1 | 5.8 | 5.5 | |
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 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 22.7 | 20.9 | 19.0 | 17.0 | 14.9 | 12.7 | 10.7 | 8.8 | 7.0 | 5.4 | 3.9 | 2.6 | 1.5 | 0.5 | 0.2 | 0.0 | |
Natural Gas – Medium Efficiency | 15.9 | 16.9 | 18.0 | 18.9 | 19.8 | 20.4 | 21.0 | 21.5 | 21.6 | 21.5 | 21.1 | 20.7 | 20.2 | 19.5 | 18.7 | 17.7 | |
Natural Gas – High Efficiency | 9.1 | 10.1 | 11.3 | 12.5 | 13.8 | 15.0 | 16.4 | 17.7 | 19.2 | 20.5 | 22.0 | 23.4 | 24.7 | 26.0 | 27.1 | 28.1 | |
Electric | 22.5 | 22.4 | 22.3 | 22.3 | 22.4 | 22.6 | 22.9 | 23.2 | 23.6 | 24.1 | 24.5 | 24.9 | 25.3 | 25.7 | 26.0 | 26.2 | |
Heat Pump | 5.1 | 5.3 | 5.5 | 5.7 | 5.9 | 6.0 | 6.2 | 6.3 | 6.5 | 6.6 | 6.8 | 6.9 | 7.0 | 7.2 | 7.3 | 7.4 | |
Other1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.2 | 1.2 | 1.2 | 1.3 | 1.3 | 1.3 | |
Wood | 0.8 | 0.7 | 0.6 | 0.6 | 0.6 | 0.6 | 0.4 | 0.4 | 0.3 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | |
Dual Systems | |||||||||||||||||
Wood/Electric | 8.1 | 8.1 | 8.1 | 8.1 | 8.0 | 8.0 | 7.9 | 7.9 | 7.8 | 7.8 | 7.8 | 7.8 | 7.7 | 7.7 | 7.7 | 7.7 | |
Wood/Heating Oil | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.6 | 3.6 | |
Natural Gas/Electric | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | |
Heating Oil/Electric | 1.4 | 1.4 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 |