How To Fix Breville Barista Express Low Pressure

The Breville Barista Express is the best espresso machine, and it is affordable as well. Although the machine is really admirable, sometimes you might feel problems with the pressure.

There could be many reasons why your machine is not achieving the proper amount of pressure. In this article, we will give you solutions to this issue and also tell you why this happens.

Why Is There Low Pressure on My Breville Barista Express? 

The obvious reason why your Breville Barista Express is low pressure could be because the grid size is not adjusted, it needs to be changed, and you should also use the right amount of coffee beans, approximately 18 grams.

Deeply pressing the coffee in the machine and regularly descaling the machine are recommended. Always try to use fresh coffee beans, and if necessary, change the top burr grind setting to finer coffee grounds.

Your Breville Barista Express Isn’t Working Properly

To know that your machine is in good condition, the first thing you can do is check if the pressure gauge is working properly while you haven’t even placed any ground beans in the basket.

Ensure that the pressurized basket has been put on the handle and press the start button. The pressure indicator should be moved to a minimum of half its dial.

If this does not happen in this case, then there could be something broken in your machine and the best thing to do is to contact Breville customer service.

If your device is under warranty, they can replace it or repair it for free.

You’re Not Using the Right Grind Size

The most common reason your machine isn’t producing proper pressure is due to the coffee grind size.

Water is easy to get through if the coffee grind size is too coarse. That’s why your machine does not have to use a lot of pressure, and you will not be able to get a proper cup of espresso.

Still, you will get the espresso with a lot of cream on it, but it will not be that tasty, and it will probably be sour. This usually happens when you are using a grind size of 10 or above. For espresso, many people choose a grind size of 9.

But this really could be different for you. It depends on the taste you like and the beans you use. You can try more grind sizes to find the one you prefer.

You can understand this by considering it like sand or rocks. Suppose you have a bucket full of rocks and fill it with water. Water will flow freely through it.

But if you have a bucket full of sand, you fill it with water. The water will just settle on top of the sand. It would require a lot of pressure to get the water through.

You’re Not Using The Right Dose of Ground Beans

While pressing the coffee beans in the portafilter with the tamper. When you fully press the tamper, the silver ring on the tamper should be visible. If you are not able to see the silver edge of the tamper, then it’s a clear sign that you are not using enough ground coffee beans.

Always use a two-cup basket for good espresso and the recommended amount of coffee.

A  “razor tool” comes with your machine when you first brought it. This tool helps you to measure the amount of ground beans you need to put in the portafilter. This equates to around 18 grams of coffee.

Consider using a scale to properly measure out 18 grams of coffee for your espresso for a professional barista-style brew.

You’re Not Tamping The Coffee

Tamping the coffee grounds slows the flow of water through it, which forces your machine to put more pressure on the brewing process.

You’ll find the tamper on the left side of your Breville Barista Express, and it is attached to it by a magnet.

Simply take the tamper and try to press down on the coffee in the portafilter. Properly press the coffee to compress it and ensure it is thickly packed.

Your Breville Barista Express Needs to Be Descaled

Descaling is an essential part of maintaining your Breville Barista Express. Descaling regularly can improve the Breville Barista Express low pressure and make it work smoothly.

If you use your Breville regularly, after a period of time, you will find that mineral deposits build up within your coffee maker. You can also call this build-up a “scale”.  This scale can affect the pressure of your machine by preventing the flow of water.

Your machine’s hottest parts, such as boilers and the pipelines that connect to the group head, are especially affected by scale build-up. So it is very important for your machine to be descaled very often.

It would be sufficient for your machine to be descaled every 2 or 3 months, but still, it depends on how frequently you use your machine and the quality of water you use. It is always recommended to use filtered water

Coffee Beans Are Too Old

The taste of your coffee depends on the quality of the coffee beans you use. Try to use fresh coffee beans for the best taste; it also improves the pressure of your Breville Barista Express and maintains proper water flow.

 Recently roasted beans may contain an excessive amount of carbon dioxide. It helps to make the water flow too slowly and the pressure too high, which makes the best cup of coffee. It is often advised that after roasting the beans, wait a few days before brewing espresso.

Although the off-gassing process implies that the beans are gradually losing their freshness, the gases that are driven away from coffee beans are essential for preserving the flavour of the coffee.

When the gases are mostly driven away, the beans are more prone to oxidation. which might cause them to turn stale. As a result, it fastens the water flow and lowers the pressure.

Coffee beans in light and medium roasts have less CO2 than those in darker roasts. The darker roast beans cannot hold CO2 for a long time, but the light and medium roasts can. As a result, they remain fresher for longer.

It is recommended to use the darker roast beans as soon as you can, within a month. And for the lighter ones, you can store them for a long time.

Always store your coffee in a cold and dark place.

Final Words

It could be challenging to maintain the normal pressure of your Breville Barista Express, but reading this article and following all the steps that we have mentioned in the above article will help you fix this issue.

Although regular maintenance is important for your coffee maker, always try to descale your breville barista express every 3 to 4 months.

Meet Vishu Yadav, the coffee connoisseur behind With a barista background and a love for coffee, he explores diverse coffee cultures and brewing techniques. Join him for the latest trends, specialty roast reviews, and brewing insights on

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