Consumer Reports says there are things you can do that can be more effective than an air purifier. First, ban indoor smoking."If you've got a smoker in your family, you should not let them smoke in your house because that's an incredibly large source of pollution in the home," .It seems like everywhere I go, people have an air purifier running. No one wants to breathe dirty air. Just remember a machine alone, won't clean the air or relieve asthma or allergy symptoms.
Schultzy @ http://unitedfilter.com/