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Filters, that is. Ideally, you want a central air-conditioning system with a HEPA filter attached.

If you don’t have central air, try free-standing air cleaners in key rooms such as the bedroom.

Change the filters at least every three months and have your heating and air-conditioning units inspected (and cleaned, if necessary) every six.


The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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