Having tried to save some $$$--in the past I have purchased those store brand filters which do NOT even last the 90 days as they advertise--These filters are great they last and definitely do the job
I HAVE NEVER HAD A BETTER FILTER TO USE SINCE THE PAST 55 YEARS,IT MAKES THE HOUSE AND AIR SO MUCH CLEANER PLUS A LOT OF LESS HOUSE DUSTING!!!!!!!! AND MUCH BETTER AIR TO BREATHE.
THE ELECTRIC AIR PURFIERS CAN GO HIDE THEM SELVES, I USE TO OWN SEVERAL DIFFERENT KINDS,NOW I'M HAPPY TO BE ABLE TO PURCHASE WONDERFUL FILTRETE FILTERS.
Filter captures alot of dust, candle smoke,and other polutants. The filters always come out really dirty after the 90 day use. I have no way to test what other airborne polutants the filters capture, it is all from what Filtrete says the filters do. However, I do notice less dust, and the family seems to stay healthy. I would change the filter every 30 days, but the cost usually prevents me from changing more than every 90 days.