4.5 - WINDOWS
  Number of households by region
Canada Atlantic Quebec Ontario
Type of windows that are the majority in the dwelling
Standard single pane with a storm window 583,862 A 63,208 M U U
Standard single pane 399,747 A 27,174 M U 123,046 M
Standard double pane 2,182,939 A 169,175 A 446,816 A 781,362 A
Standard double pane sealed unit 2,990,913 A 198,657 A 631,445 A 1,061,590 A
Standard triple pane sealed unit 259,943 M U U U
Low-Emissivity (Low-E) coating - gas filled double pane 1,092,295 A 100,076 A 148,569 M 603,952 A
Low-Emissivity (Low-E) coating - gas filled triple pane 192,398 A U U 57,540 M
Standard gas filled double pane 657,148 A 54,369 M 279,998 A 250,377 A
Standard gas filled triple pane 51,889 M U U U
Other 40,809 M U U U
Don't know 1,238,585 A 57,553 M 217,737 A 577,140 A
Not stated 418,347 A 36,955 M 128,750 M 132,771 M
Age of the majority of the windows
5 years or less 2,220,356 A 159,083 A 389,141 A 939,962 A
6 to 10 years 2,055,645 A 153,739 A 483,215 A 883,962 A
11 to 15 years 1,665,472 A 116,528 A 314,352 A 655,673 A
16 or more 3,256,890 A 236,359 A 750,371 A 1,092,607 A
Don't know 620,885 A 39,406 M U 245,470 A
Not stated 289,625 M U 99,006 M U
Condensation on inside surfaces of windows
Yes - on most 1,523,653 A 105,403 A 460,332 A 543,497 A
Yes - on some 4,931,751 A 375,620 A 1,191,396 A 1,753,324 A
No 6,939,803 A 485,811 A 1,681,871 A 2,687,248 A
Don't know 150,845 M U U U
Not stated U U U U
Air leaks or drafts around windows
Yes 4,553,952 A 377,685 A 1,082,285 A 1,738,235 A
No 8,577,517 A 583,353 A 2,214,140 A 3,183,282 A
Don't know 408,583 A U U 119,622 M
Not stated U U U U

Note:

Due to rounding, the numbers may not add up and may differ slightly among tables.

Legend:

The letter beside each estimate classifies its quality as follows: A–Acceptable, M–Use with caution, U–Too unreliable to be published.

Source:

2011 Survey of Household Energy Use