As an Amazon Associate I earn from qualifying purchases.Updated: March 18, 2026
The Water Filter in your Breville Barista Express is crucial for removing impurities from the water used to brew your coffee. Over time, these filters become less effective, leading to reduced performance and potentially affecting the taste of your drinks. Regularly replacing the filter ensures optimal brewing quality and prolongs the lifespan of your machine.
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Function: Reduces chlorine, sediment, and other impurities from water used for brewing
Signs it needs replacing: Reduced coffee flow rate, bitter or off-tasting coffee, increased noise during brewing
OEM vs aftermarket: OEM filters (BWF100) guarantee compatibility but are often pricier. Aftermarket options are available at lower costs but research brands and reviews carefully for quality and fit.
Installation: Typically involves twisting out the old filter and inserting the new one into the designated compartment. Refer to your device manual for specific instructions.
Replacement schedule: every 2 months
Compatibility warning: always verify part number matches your exact model before ordering
Pros & Cons
Pros
✓ Restores device to original performance without buying a new unit
✓ Significantly cheaper than a full device replacement
✓ Multiple options available from OEM and aftermarket sellers
Cons
✗ OEM parts cost more than third-party alternatives
✗ Wrong part number will not fit — model verification is essential
Common Use Cases
Scheduled maintenance: replacing on the every 2 months schedule
Performance restoration after noticing reduced output or efficiency
Preventive replacement before a worn part causes secondary damage
Who Should Buy This
This replacement is for owners of a Breville Barista Express BES870XL whose machine's performance has declined and want to restore it to its original brewing quality.
Not ideal for: If your Breville Barista Express is experiencing multiple malfunctions or nearing the end of its lifespan, full device replacement may be more cost-effective.
Good to Know Before Buying
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Always confirm your exact model number (BES870XL) before ordering. Part numbers vary between model variants and production years. Check the label on your device or original documentation to be sure.
Frequently Asked Questions
What is the part number for the Breville Barista Express Water Filter?
The part number is BWF100. Always verify this matches your exact model (BES870XL) before ordering, as similar models may use different parts.
How often should I replace the Water Filter on my Breville Barista Express?
every 2 months
Will aftermarket Water Filter replacements work in my Breville Barista Express?
Third-party parts are widely available and often cheaper than OEM. Look for listings that specifically mention compatibility with model BES870XL and check buyer reviews for fit confirmation before purchasing.
Prices change frequently. See the latest deal on Amazon.