Residential Sector
Nova Scotia
Table 27: Cooling System Stock by Type, New Unit Efficiencies, Stock Efficiencies and Unit Capacity Ratio
  1990   2003 2004 2005 2006 2007 2008
Total Cooling System Stock (thousands) 14.6   34.0 38.0 43.0 49.7 65.5 64.0

System Stock by Type (thousands)
Room 10.7   27.0 32.0 35.0 40.2 50.9 51.0
Central 3.9   7.0 6.0 8.0 9.5 14.6 13.0

Shares (%)
Room 73.3   79.4 84.2 81.4 80.9 77.8 79.7
Central 26.7   20.6 15.8 18.6 19.1 22.2 20.3

New Unit Efficiencies
Room (EER)1 7.1   9.4 9.4 9.4 10.9 10.9 10.9
Central (SEER)2 9.1   10.3 10.3 10.3 13.0 13.0 13.0

Stock Efficiencies
Room (EER)1 6.8   8.8 8.9 9.1 9.5 9.8 10.0
Central (SEER)2 8.6   9.8 9.9 10.0 10.3 10.5 10.7

Unit Capacity Ratio (Btu/hour)
Room 10,114   9,717 9,531 9,345 9,181 9,015 9,048
Central 32,356   33,919 33,389 32,873 32,372 31,873 31,872

Footnotes:

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