2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Cooling System Stock (thousands) | 95.0 | 109.0 | 116.0 | 113.0 | 142.0 | 152.0 | 249.8 | 243.7 | 269.4 | 297.9 | 329.5 | 364.6 | 388.1 | 413.2 | |
System Stock by Type (thousands) | |||||||||||||||
Room | 37.0 | 31.0 | 40.0 | 30.0 | 41.0 | 52.0 | 85.8 | 73.8 | 83.8 | 95.2 | 108.2 | 123.0 | 130.3 | 138.0 | |
Central | 58.0 | 78.0 | 76.0 | 83.0 | 101.0 | 100.0 | 163.9 | 169.9 | 185.6 | 202.6 | 221.3 | 241.6 | 257.8 | 275.1 | |
Shares (%) | |||||||||||||||
Room | 38.9 | 28.4 | 34.5 | 26.5 | 28.9 | 34.2 | 34.4 | 30.3 | 31.1 | 32.0 | 32.8 | 33.7 | 33.6 | 33.4 | |
Central | 61.1 | 71.6 | 65.5 | 73.5 | 71.1 | 65.8 | 65.6 | 69.7 | 68.9 | 68.0 | 67.2 | 66.3 | 66.4 | 66.6 | |
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.