13.1 - AIR QUALITY IMPROVEMENT IN THE DWELLING
  Number of households by type of dwelling1
High-rise apartments Mobile homes
Improvement made to the air quality by …
 
openning windows more often to increase air circulation
Yes 874,569 A 145,460 M
No U U
Don't know
Not stated U U
turning on a floor or ceiling fan to increase air circulation
Yes 447,815 A 91,733 M
No 494,011 A U
Don't know
Not stated U U
using an air conditioner more frequently
Yes 168,833 M U
No 772,993 A 133,270 M
Don't know
Not stated U U
using a dehumidifier
Yes U U
No 807,960 A 146,846 M
Don't know
Not stated U U
using a humidifier
Yes 225,930 M U
No 715,897 A 125,534 M
Don't know
Not stated U U
using an air cleaning system (excluding ionizing systems)
Yes 149,606 M U
No 792,221 A 151,970 M
Don't know
Not stated U U
using higher quality filters in the furnace
Yes U U
No 912,493 A 126,153 M
Don't know
Not stated U U
using the furnace or a heat recovery ventilation (HRV) system to increase air circulation
Yes U U
No 883,937 A 132,098 M
Don't know
Not stated U U
During the winter season, how often do you open a window to allow fresh air into your dwelling?
Every day 499,056 A U
At least once a week 200,498 M U
A few times during the season 122,636 M U
Never U U
Don't know U
Not stated U U
During the summer season, how often do you open a window to allow fresh air into your dwelling?
Every day 744,120 A 114,566 M
At least once a week U U
A few times during the season U U
Never U U
Don't know U
Not stated U U

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