If your Breville Bambino Plus is not building pressure during extraction, it can affect the quality of your espresso. This guide provides practical, step-by-step instructions to diagnose and resolve pressure issues safely and effectively.
Understanding common causes like blockages, worn seals, or mineral buildup is essential. Follow these detailed steps to restore your machine’s optimal performance and enjoy cafe-quality coffee at home.
Key Takeaways
| Identify common causes | Blockages, worn seals, and mineral buildup can cause pressure loss. |
| Step-by-step troubleshooting | Follow clear steps to inspect, clean, and replace parts as needed. |
| Safety first | Always unplug the machine before performing maintenance or repairs. |
| Use recommended products | Cleaning tablets and filters help maintain pressure and performance. |

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Check for Blockages in the Portafilter and Group Head
- Unplug your espresso machine to ensure safety.
- Remove the portafilter and inspect the filter basket for coffee grounds or clogs.
- Check the group head for any coffee residue or blockages that could impede water flow.
- Use a cleaning brush or pin to clear any obstructions gently.
- Reassemble and test the machine for pressure buildup.

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Inspect and Replace Worn Seals or Gaskets
Worn or damaged seals can cause pressure leaks. Carefully examine the group head gasket and portafilter seals for cracks or deterioration. If you notice any damage, replace the seals with genuine Breville parts to restore proper pressure and prevent leaks.
Clean the Machine with Proper Maintenance Products
- Use Breville BEC250 Espresso Machine Cleaning Tablets to remove coffee oils and residues that can hinder pressure.
- Follow the manufacturer’s instructions for cleaning cycles, typically involving dissolving tablets in water and running a cleaning brew.
- Replace water filters regularly using compatible charcoal filters to prevent mineral buildup that affects pressure.
Descale Your Espresso Machine
Mineral deposits can cause pressure issues. Use a descaling solution suitable for Breville machines, and follow the descaling instructions provided in your user manual. Regular descaling helps maintain consistent pressure and prolongs the life of your machine.
Test and Final Adjustments
After cleaning and replacing worn parts, run a test shot. Observe the pressure gauge and extraction process. If pressure still drops, repeat the inspection for blockages or leaks. Persistent issues may require professional repair or contacting Breville support.
The Products in This Guide

Breville Bambino Plus
- ✔ Weight: 9.8 kg
- ✔ Warranty: 1 Year
- ✔ Power: 1600W

Breville BEC250 Espresso Machine Cleaning Tablets
- ✔ Shelf Life: 2 Years
- ✔ Storage: Cool, dry place
- ✔ Safety: Non-toxic
Breville Bambino Plus

The Breville Bambino Plus is a compact, high-performance espresso machine that delivers professional results. Its robust build and advanced features make it a reliable choice, but timely maintenance is key to preventing pressure issues.
Pros:
- Fast heat-up with ThermoJet
- Precise dose control grinding
- Pre-infusion for balanced extraction
- Compact design fits small spaces
Cons:
- Requires regular descaling
- May need seal replacement over time
- Cleaning accessories not included
Best for: Home baristas seeking café-quality espresso with minimal fuss
Not ideal for: Users who prefer fully manual or commercial machines
Bottom line: The Bambino Plus is a reliable, high-quality espresso machine with proper maintenance essential for peak performance.
Breville BEC250 Espresso Machine Cleaning Tablets

Using Breville BEC250 Cleaning Tablets regularly helps keep the internal components clean, ensuring consistent pressure and flavor extraction. It’s a simple step that prolongs your machine’s lifespan.
Pros:
- Official Breville product
- Removes coffee oils and residues
- Easy to use
- Extends machine life
Cons:
- Requires regular use
- Only for cleaning, not descaling
- Packaging may vary
Best for: Maintaining optimal pressure and cleanliness
Not ideal for: For descaling mineral buildup
Bottom line: Regular cleaning with these tablets helps maintain pressure and flavor quality.
Frequently Asked Questions
Why does my Breville Bambino Plus lose pressure during extraction?
Common causes include blockages in the portafilter or group head, worn seals, mineral buildup, or faulty valves. Regular maintenance can prevent these issues.
How often should I descale my Breville espresso machine?
It is recommended to descale every 2-3 months, depending on your water hardness and usage frequency.
Can I use regular cleaning products instead of Breville-specific tablets?
It’s best to use products designed for espresso machines, like Breville BEC250 tablets, to ensure compatibility and effective cleaning.
What should I do if cleaning and maintenance don’t fix the pressure problem?
If issues persist after troubleshooting, contact Breville customer support or consider professional repair to diagnose potential internal component failures.
Restore Your Espresso Machine’s Performance
Proper maintenance and timely troubleshooting can keep your Breville Bambino Plus performing at its best. Regular cleaning, checking for blockages, and replacing worn seals are key steps. If pressure issues continue, professional support may be necessary. Enjoy consistently excellent espresso at home with a well-maintained machine.
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