If your Breville Bambino Plus is not building pressure during extraction, it can lead to weak or under-extracted espresso. This guide provides simple, safe troubleshooting steps to restore proper pressure, ensuring you get the best espresso experience at home.
Before starting, gather basic cleaning supplies and consider replacing water filters or cleaning tablets if needed, as these are common causes of pressure issues.
Key Takeaways
| Check for clogs | Clogged filters or shower screens can cause pressure loss. |
| Inspect water filters | Old or clogged filters reduce water flow and pressure. |
| Clean the machine | Build-up of coffee oils and residues impairs pressure. |
| Ensure proper grind size | Too coarse grind prevents proper pressure buildup. |
| Verify machine components | Worn or damaged seals and valves can cause pressure issues. |

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Step 1: Turn Off and Unplug the Machine
Safety first—ensure the machine is turned off and unplugged before performing any troubleshooting or cleaning to prevent injury or damage.

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Step 2: Check and Clean the Shower Screen and Filter Basket
- Remove the portafilter from the machine and detach the filter basket.
- Inspect the shower screen for coffee grounds or blockages. Clean thoroughly with warm water and a soft brush.
- Replace the filter basket and reattach the portafilter.
Step 3: Inspect and Replace Water Filter
If your machine uses a water filter, remove it and check for clogs or buildup. Replace with a new filter if old or clogged to ensure proper water flow and pressure.
Step 4: Descale the Machine
Mineral buildup can impair pressure. Use a descaling solution or cleaning tablets recommended for your model. Follow the manufacturer’s instructions carefully to descale the internal components.
Step 5: Check and Adjust Grind Size
Use a slightly finer grind to increase resistance during extraction. Ensure the coffee is tamped evenly and firmly in the portafilter for optimal pressure buildup.
The Products in This Guide

Breville Bambino Plus
- ✔ Weight: 9.9 kg
- ✔ Power: 1600W
- ✔ Water Tank: 1.9L

Breville BEC250 Espresso Machine Cleaning Tablets
- ✔ Weight: 150g
- ✔ Usage: One tablet per cleaning cycle
- ✔ Shelf Life: 2 years
Breville Bambino Plus

The Breville Bambino Plus is a compact, high-performance espresso machine designed for home use. Proper maintenance and troubleshooting can resolve pressure issues, ensuring you enjoy cafe-quality coffee at home.
Pros:
- Fast heat-up with ThermoJet
- Precise dose control
- Consistent extraction
- Compact and stylish
Cons:
- Requires regular cleaning
- Filters need frequent replacement
- No built-in grinder
Best for: Home baristas seeking quick, quality espresso
Not ideal for: Heavy users needing commercial-grade durability
Bottom line: A reliable, quality espresso machine that benefits from regular cleaning and maintenance.
Breville BEC250 Espresso Machine Cleaning Tablets

Using Breville’s official cleaning tablets helps remove oils and residues that can cause pressure issues, prolonging your machine’s lifespan and ensuring optimal extraction.
Pros:
- Effective cleaning of coffee oils
- Safe and food-grade ingredients
- Easy to use
- Prolongs machine life
Cons:
- Requires regular use
- Additional cost for tablets
- Must follow cleaning schedule
Best for: Maintaining machine cleanliness and performance
Not ideal for: Users seeking an all-in-one cleaning and descaling solution
Bottom line: A trusted cleaning aid to keep your Breville espresso machine running smoothly.
Frequently Asked Questions
Why is my espresso machine not building pressure?
Common causes include clogged filters, dirty shower screens, mineral buildup, or incorrect grind size. Regular cleaning and maintenance usually resolve these issues.
How often should I descale my Breville Bambino Plus?
It is recommended to descale every 2-3 months, or more frequently if you have hard water, to prevent mineral buildup that can affect pressure.
Can I use regular cleaning products on my espresso machine?
It is best to use products designed for espresso machines, like Breville cleaning tablets, to ensure safety and effective cleaning without damaging internal components.
What grind size is best for maintaining pressure?
A slightly finer grind than usual helps build proper resistance and pressure during extraction. Experiment gradually to find the optimal setting for your beans.
Keep Your Breville Bambino Plus in Top Shape
By following these troubleshooting steps and maintaining regular cleaning, you can fix pressure issues and enjoy consistently excellent espresso. Remember, proper care extends the life of your machine and enhances your coffee experience.
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