Breville BES870 how to replace the water filter
Every 2 months, more often in hard-water areas. Remove the filter if you use filtered or bottled water.
You need
- New water filter
- Cup of water
Steps
- Soak the new filter in a cup of water for 5 minutes, then rinse it under cold running water.
- Wash the filter holder in cold water, rinsing its stainless steel mesh carefully.
- Fit the filter between the two parts of the holder.
- Set the date dial 2 months ahead.
- Align the holder base with the adapter inside the tank and push down until it locks.
- Slide the tank back in and push it down until it locks.
Source: Care & Cleaning: Replacing the water filter Source: Care & Cleaning: Replacing the water filter, p. 23
Other BES870 procedures
- How to run the cleaning cycleWhen the CLEAN/DESCALE light flashes. This back-flush cycle is separate from descaling.
- How to descaleWhen the CLEAN/DESCALE light stays on (not flashing).
- How to clean the steam wandAfter every use, and when steam is weak or the tip is blocked.
- How to clean the burr grinderWhen oil build-up on the burrs affects grinding, or the grinder is noisy or delivers no coffee. A blockage between the burrs and the outlet needs the advanced cleaning on page 25 of the instruction book.
- How to replace the group-head sealWhen espresso or water leaks around the portafilter because the silicone seal no longer seals.
Sources
- the Barista Express Instruction Book, BES870 (English, Canadian French and Mexican Spanish edition). Breville Pty Ltd. Document BES870 USCM, revision X20, 2020, 112 pages, en-US. assets.breville.com (PDF). Retrieved 12 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.