Residential Sector
British Columbia
Table 27: Cooling System Stock by Type, New Unit Efficiencies, Stock Efficiencies and Unit Capacity Ratio
  2000   2001 2002 2003 2004 2005 2006
Total Cooling System Stock (thousands) 171.0   177.0 180.0 191.0 232.0 292.0 319.3

System Stock by Type (thousands)
Room 88.0   102.0 97.0 99.0 97.0 115.0 150.3
Central 83.0   75.0 83.0 92.0 135.0 177.0 169.1

Shares (%)
Room 51.5   57.6 53.9 51.8 41.8 39.4 47.1
Central 48.5   42.4 46.1 48.2 58.2 60.6 52.9

New Unit Efficiencies
Room (EER)1 9.4   9.4 9.4 9.4 9.4 9.4 10.9
Central (SEER)2 10.3   10.3 10.3 10.3 10.3 10.3 13.0

Stock Efficiencies
Room (EER)1 8.3   8.4 8.6 8.8 8.9 9.1 9.5
Central (SEER)2 9.6   9.7 9.7 9.8 9.9 10.0 10.3

Unit Capacity Ratio (Btu/hour)
Room 9,898   9,829 9,797 9,717 9,531 9,345 9,181
Central 33,466   33,624 33,768 33,919 33,389 32,873 32,372

Footnotes:

1) Energy Efficiency Ratio.
2) Seasonal Energy Efficiency Ratio.