Each Filter should be changed every 2-8 weeks depending on usage. These Premium BWF100 Charcoal Water Filters are compatible with the following Breville Espresso Machines: The Oracle Touch (BES990 – Batch 1746 & earlier) The Oracle (BES980 – Batch 1751 & earlier)The Barista Pro (BES878)The Barista Express (BES870)The Infuser (BES840)The Duo-Temp Pro (BES810)The Dual Boiler (BES920 – Batch 1800 & earlier)The Dynamic Duo (BEP920 – Batch 1800 & earlier)Reduces 99% of chlorine and odour