2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Cooling System Stock (thousands) | 597.0 | 728.0 | 794.0 | 934.0 | 1002.0 | 1172.0 | 1326.7 | 1402.2 | 1506.6 | 1619.5 | 1741.7 | 1873.9 | 1920.9 | 1970.0 | |
System Stock by Type (thousands) | |||||||||||||||
Room | 362.0 | 439.0 | 481.0 | 637.0 | 633.0 | 746.0 | 797.3 | 935.9 | 1020.8 | 1113.3 | 1214.3 | 1324.4 | 1338.9 | 1353.6 | |
Central | 235.0 | 289.0 | 313.0 | 297.0 | 369.0 | 426.0 | 529.4 | 466.3 | 485.8 | 506.2 | 527.4 | 549.5 | 582.0 | 616.4 | |
Shares (%) | |||||||||||||||
Room | 60.6 | 60.3 | 60.6 | 68.2 | 63.2 | 63.7 | 60.1 | 66.7 | 67.8 | 68.7 | 69.7 | 70.7 | 69.7 | 68.7 | |
Central | 39.4 | 39.7 | 39.4 | 31.8 | 36.8 | 36.3 | 39.9 | 33.3 | 32.2 | 31.3 | 30.3 | 29.3 | 30.3 | 31.3 | |
New Unit Efficiencies | |||||||||||||||
Room (EER)1 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 10.9 | 10.9 | 10.9 | 10.9 | 11.0 | 11.0 | 11.1 | 11.1 | |
Central (SEER)2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.3 | 10.3 | 13.0 | 13.0 | 13.0 | 13.0 | 13.1 | 13.1 | 13.2 | 13.3 | |
Stock Efficiencies | |||||||||||||||
Room (EER)1 | 8.3 | 8.4 | 8.6 | 8.8 | 8.9 | 9.1 | 9.5 | 9.8 | 10.0 | 10.1 | 10.3 | 10.4 | 10.5 | 10.6 | |
Central (SEER)2 | 9.6 | 9.7 | 9.7 | 9.8 | 9.9 | 10.0 | 10.3 | 10.5 | 10.7 | 10.9 | 11.1 | 11.2 | 11.4 | 11.6 | |
Unit Capacity Ratio (Btu/hour) | |||||||||||||||
Room | 9,898 | 9,829 | 9,797 | 9,717 | 9,531 | 9,345 | 9,181 | 9,015 | 9,044 | 9,074 | 9,105 | 9,122 | 9,125 | 9,127 | |
Central | 33,466 | 33,624 | 33,768 | 33,919 | 33,389 | 32,873 | 32,372 | 31,873 | 31,879 | 31,885 | 31,891 | 33,257 | 33,265 | 33,274 |
Footnotes:
1) Energy Efficiency Ratio.2) Seasonal Energy Efficiency Ratio.