Quote:
Originally Posted by jimmy o
All your responders have given valid reasons. But one thing to remember; if you leave your windows or lanai open your filter becomes meaningless.
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True, but, the EPA has done hundreds of studies and spent millions of dollars researching indoor air purification systems. And, they say that:
"The most effective ways to improve your indoor air are to reduce or remove the sources of pollutants and to ventilate with clean outdoor air."