Product review (5 stars): Essick Maf 1 humidifier replacement filter
Quite satisfied with the filters,shipping time and cost. These filters get stopped up and will not allow the humidifier to work even at 50 percent,so it makes sense to replace them every winter. The filters can look as good as new when used for one or two seasons but drastically better humidification results by installing a new one each heating season. Installation is very simple . a plus on this whole deal.