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Improving Energy Performance in Canada – Report to Parliament Under the Energy Efficiency Act For the Fiscal Year 2005-2006
| Average air change at 50 Pa | |||
|---|---|---|---|
| Year built | First EGH evaluation (A) |
Post-Retrofit evaluation (B) |
R-2000 |
| Pre-1945 | 11 | 8 | n.a. |
| 1945-1959 | 8 | 6 | n.a. |
| 1960-1969 | 6 | 5 | n.a. |
| 1970-1979 | 6 | 5 | n.a. |
| 1980-1989 | 5 | 4 | 0.9 |
| 1990-1999 | 4 | 4 | 1.1 |
| 2000-2006 | 4 | 3 | 1.1 |
| Average | 7 | 6 | 1.1 |
