2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Cooling System Stock (thousands) | 81.0 | 69.3 | 77.5 | 97.5 | 108.5 | 123.3 | 138.4 | 163.6 | 185.8 | 211.2 | 240.2 | 273.3 | 288.4 | 304.7 | |
System Stock by Type (thousands) | |||||||||||||||
Room | 55.9 | 47.2 | 55.5 | 73.4 | 81.4 | 94.3 | 103.6 | 124.6 | 142.8 | 163.8 | 187.9 | 215.6 | 225.3 | 235.6 | |
Central | 25.1 | 22.1 | 22.0 | 24.1 | 27.2 | 29.0 | 34.8 | 39.0 | 43.0 | 47.4 | 52.3 | 57.7 | 63.1 | 69.2 | |
Shares (%) | |||||||||||||||
Room | 69.0 | 68.2 | 71.6 | 75.3 | 75.0 | 76.5 | 74.8 | 76.2 | 76.9 | 77.6 | 78.2 | 78.9 | 78.1 | 77.3 | |
Central | 31.0 | 31.8 | 28.4 | 24.7 | 25.0 | 23.5 | 25.2 | 23.8 | 23.1 | 22.4 | 21.8 | 21.1 | 21.9 | 22.7 | |
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.