7.2 - CENTRAL AIR CONDITIONING
  Number of households by region
Canada Atlantic Quebec Ontario
Age of the central air conditioner
5 years or less 1,435,280 A U 214,577 A 886,388 A
6 to 10 years 1,166,572 A U 160,586 M 765,235 A
11 to 15 years 886,925 A U 82,741 M 636,726 A
16 to 20 years 383,485 A U U 274,436 A
21 years or more 363,801 A U U 218,340 A
Don't know 451,591 A U U 357,189 A
Not stated 99,501 M U U U
Households with an ENERGY STAR® central air conditioner
Yes 1,703,145 A U 237,303 M 1,195,647 A
No 861,897 A U 105,626 M 520,906 A
Don't know 2,048,758 A U 175,927 A 1,358,546 A
Not stated 173,357 A U U 100,905 M

Footnotes:

1 Does not include the "Don't know/not stated" category.

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