2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Cooling System Stock (thousands) | 147.0 | 150.0 | 159.0 | 180.0 | 182.0 | 184.0 | 191.4 | 207.0 | 224.1 | 242.6 | 262.7 | 284.6 | 295.5 | 307.1 | |
System Stock by Type (thousands) | |||||||||||||||
Room | 50.0 | 57.0 | 55.0 | 65.0 | 56.0 | 53.0 | 60.9 | 64.3 | 71.1 | 78.6 | 86.9 | 96.1 | 95.7 | 95.3 | |
Central | 97.0 | 93.0 | 104.0 | 115.0 | 126.0 | 131.0 | 130.5 | 142.8 | 153.0 | 164.0 | 175.8 | 188.5 | 199.8 | 211.8 | |
Shares (%) | |||||||||||||||
Room | 34.0 | 38.0 | 34.6 | 36.1 | 30.8 | 28.8 | 31.8 | 31.0 | 31.7 | 32.4 | 33.1 | 33.8 | 32.4 | 31.0 | |
Central | 66.0 | 62.0 | 65.4 | 63.9 | 69.2 | 71.2 | 68.2 | 69.0 | 68.3 | 67.6 | 66.9 | 66.2 | 67.6 | 69.0 | |
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.