If your Breville Bambino Plus is not building pressure during extraction, it can lead to weak or under-extracted espresso. This issue is often caused by clogs, scale buildup, or worn-out parts. Fortunately, with some basic troubleshooting, you can resolve the problem and get your machine back to optimal performance.
Below are clear, step-by-step instructions to identify and fix common causes of pressure loss, along with tips for maintenance and safety.
Key Takeaways
| Identify common causes | Clogs, scale buildup, worn-out seals or valves |
| Regular cleaning is key | Use appropriate cleaning tablets and descaling to prevent pressure issues |
| Check the portafilter and basket | Ensure they are clean and properly seated |
| Inspect the water system | Replace charcoal filters if clogged or expired |
| Perform step-by-step troubleshooting | Systematically eliminate possible causes for pressure loss |

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Step 1: Turn Off and Unplug the Machine
Always ensure the espresso machine is turned off and unplugged before beginning any troubleshooting to avoid electrical hazards or injury.

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Step 2: Clean the Portafilter and Basket
- Remove the portafilter from the machine.
- Disassemble and wash the filter basket and portafilter thoroughly with warm water and a brush.
- Check for any coffee grounds or oils blocking the holes.
Step 3: Descale the Machine
Scale buildup can restrict water flow and cause pressure issues. Use descaling tablets designed for Breville machines, such as the Breville BEC250 or the replacement tablets B0FCBPBBL4, following the product instructions. Run a descaling cycle to remove mineral deposits from internal components.
Step 4: Check and Replace Water Filters
If your machine uses charcoal filters (like the Breville Charcoal Filters B000VX44OO), replace them regularly—every 2 months is recommended. Dirty filters can reduce water flow and pressure. Remove the old filter and insert a new one, following the user manual guidelines.
Step 5: Inspect and Replace Seals or Valves
If pressure issues persist, check the seals and valves for wear or damage. Worn-out seals can cause pressure leaks. Consult your user manual for specific parts to inspect or replace, or contact a professional if needed.
The Products in This Guide

Breville Bambino Plus
- ✔ Dimensions: 12.6 x 7.7 x 12 inches
- ✔ Weight: 10.4 pounds
- ✔ Warranty: 1 year

Breville BEC250 Espresso Machine Cleaning Tablets
- ✔ Size: 8 tablets per pack
- ✔ Use Frequency: Every 1-2 months
- ✔ Shelf Life: 2 years
Breville Bambino Plus

The Breville Bambino Plus is a compact, high-performance espresso machine designed for home baristas. Its water pressure system, combined with precise temperature control, makes it resilient against common pressure issues when maintained properly.
Pros:
- Fast heat-up with ThermoJet system
- Consistent pressure pre-infusion
- Easy to clean and maintain
- Sleek black stainless steel design
Cons:
- Requires regular descaling
- Seals may wear over time
- Limited espresso capacity
Best for: Home users seeking cafe-quality espresso with minimal hassle
Not ideal for: Heavy use in commercial environments or for high-volume brewing
Bottom line: Regular maintenance and cleaning are essential to prevent pressure issues with the Bambino Plus.
Breville BEC250 Espresso Machine Cleaning Tablets

Using Breville’s official cleaning tablets helps remove oils and residues that can cause pressure drops. Regular cleaning ensures your espresso machine functions smoothly and produces rich, flavorful coffee.
Pros:
- Effective cleaning of coffee oils
- Prolongs machine lifespan
- Safe and easy to use
- Compatible with all Breville models
Cons:
- Requires regular use for best results
- Single-use packets may add up in cost
- Not a substitute for descaling
Best for: Keeping your Breville espresso machine in top condition
Not ideal for: For deep-scale removal, use descaling agents separately
Bottom line: Regular cleaning with official tablets helps prevent pressure issues and maintains flavor quality.
Frequently Asked Questions
Why does my Breville Bambino Plus have no pressure during extraction?
Common causes include clogs in the portafilter or shower screen, scale buildup inside the machine, worn-out seals or valves, or a dirty water filter.
How often should I descale my Breville Bambino Plus?
Descaling should be done every 2-3 months or when you notice a decrease in water flow or pressure, especially if you have hard water.
Can I use regular cleaning tablets on my Breville Bambino Plus?
It is best to use official Breville cleaning tablets designed for espresso machines. They are formulated to dissolve properly and clean oils without damaging components.
What should I do if cleaning and descaling don’t fix the pressure issue?
If the problem persists, inspect seals and valves for damage or wear. Consider contacting a professional repair service or Breville customer support for further assistance.
Keep Your Breville Bambino Plus in Top Shape
With regular cleaning, descaling, and routine maintenance, you can prevent pressure issues and enjoy consistently excellent espresso. Addressing clogs, replacing filters, and checking seals will extend your machine’s lifespan and ensure optimal performance. A little preventive care goes a long way in maintaining your coffee experience.
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