Residential Sector
British Columbia
Table 27: Cooling System Stock by Type, New Unit Efficiencies, Stock Efficiencies and Unit Capacity Ratio
  2000   2013 2014 2015 2016 2017 2018
Total Cooling System Stock (thousands) 171.0   472.8 496.6 518.5 543.4 566.2 589.6

System Stock by Type (thousands)
Room 88.0   265.9 285.1 302.5 319.6 337.9 355.2
Central 83.0   206.9 211.5 215.9 223.8 228.3 234.4

Shares (%)
Room 51.5   56.2 57.4 58.3 58.8 59.7 60.2
Central 48.5   43.8 42.6 41.7 41.2 40.3 39.8

New Unit Efficiencies
Room (EER)1 9.4   12.0 12.0 12.0 12.0 12.0 12.0
Central (SEER)2 10.3   13.0 13.0 13.0 13.0 13.0 13.0

Stock Efficiencies
Room (EER)1 8.3   11.0 11.2 11.3 11.4 11.5 11.6
Central (SEER)2 9.6   11.6 11.7 11.9 12.1 12.3 12.5

Unit Capacity Ratio (Btu/hour)
Room 9,898   9,101 9,111 9,121 9,132 9,142 9,152
Central 33,466   33,225 33,220 33,215 33,213 33,208 33,205

Footnotes:

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