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Furnace Filter

Try it if: You want to minimize allergens preventively.

How it works: Installing a particle-catching furnace filter from 3M Filtrete in homes with forced-air systems reduces exposure to a range of triggers, including dust, pollen, and mold. (Filters cost less than $20 at James Sublett, an allergist in Louisville, Kentucky, suggests getting one with a residential MERV rating of 12. (MERV ratings indicate how effective a filter is at catching allergens; 12 is the highest rating.)

Good to know: Change it every three months. Leave the system’s fan on to keep clean air circulating.

(Photo: Jens Mortensen/Text:Dimity McDowell)

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

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