Residential Sector
Nova Scotia
Table 27: Cooling System Stock by Type, New Unit Efficiencies, Stock Efficiencies and Unit Capacity Ratio
  1990   2009 2010 2011 2012 2013 2014
Total Cooling System Stock (thousands) 14.6   70.2 77.4 79.8 86.5 91.2 95.8

System Stock by Type (thousands)
Room 10.7   54.6 59.9 61.7 66.2 69.8 72.9
Central 3.9   15.7 17.5 18.0 20.3 21.4 22.8

Shares (%)
Room 73.3   77.7 77.4 77.4 76.6 76.5 76.2
Central 26.7   22.3 22.6 22.6 23.4 23.5 23.8

New Unit Efficiencies
Room (EER)1 7.1   10.9 12.0 12.0 12.0 12.0 12.0
Central (SEER)2 9.1   13.0 13.0 13.0 13.0 13.0 13.0

Stock Efficiencies
Room (EER)1 6.8   10.1 10.4 10.6 10.8 11.0 11.2
Central (SEER)2 8.6   10.9 11.1 11.2 11.4 11.6 11.7

Unit Capacity Ratio (Btu/hour)
Room 10,114   9,064 9,086 9,080 9,090 9,101 9,111
Central 32,356   31,884 31,886 33,236 33,225 33,225 33,220

Footnotes:

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