A member asked:

Does airing the room for 20 minutes at night before closing all windows and doors help decrease indoor air pollution the same amount as having the windows open all night?

A doctor has provided 1 answer

Probably not. Adding a fan to increase airflow during the process could add its effectiveness. Either way it may be effective enough to accomplish your goal of decreasing indoor particulate pollution.

Answered 6/23/2022



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