BREVILLE Charcoal Water Filters (12 Pack) - BWF100-12Product Description For best results replace Filter every 60 days or after 60 uses Reduces water hardness to improve the appearance and flavor of water for your espresso and coffee. Filter should be changed every 2 months, as indicated by the date dial on the Filter Holder Handle. Brew the best cup of coffee, tea or hot chocolate by replacing the charcoal filter on your Breville Gourmet Single Cup Brewer or Barista Express machine every two months.