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Difference Between Pressurised and Non-Pressurised Filter Baskets


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Choose a filter basket based on the internal diameter of your portafilter!

  1. 51mm Non-Pressurised

  2. 51mm Pressurised

  3. 54mm Non-Pressurised

  4. 58mm Non-Pressurised


How to tell which is which?

You should be able to identify both types of filter baskets just by looking at them as they have distinct characteristics.

Pressurised filter baskets will have only a single small hole in the bottom which the coffee will flow through, whereas a non-pressurised basket has lots of tiny holes.

But why is this important and how does it affect your coffee?


What Is The Difference Between Pressurised and Non-Pressurised Filter Baskets?

When using a pressurised basket, the single hole creates a build up of pressure below the coffee which forces the espresso through.

With a non-pressurised basket, there are multiple holes so the pressure is dependant on your grind size and tamp pressure.

By using a non-pressurised basket, you will extract more from the coffee rather than relying on the pressure build up from the single hole on the bottom of your basket. This gives you a more impressive crema and better tasting espresso.

That being said, there are different benefits to using both types of filter baskets:

Disadvantages of Pressurised:

  • Doesn’t rely on coffee for resistance

  • Poorer espresso quality

  • Weaker crema

  • Limited control of extraction

Benefits of Pressurised:

  • Less dependant on grind size (so you can have a coarser grind)

  • No expensive grinder required

  • Added convenience for beginners

  • Don’t have to spend time dialling in your grind

  • More leniency with tamp pressure

  • Most baskets are compatible with ESE pods


Disadvantages of Non-Pressurised:

  • Requires an expensive grinder

  • Learning the right technique is time consuming

  • Not as convenient as pressurised

  • Easier to over/under extract your coffee

Benefits of Non-Pressurised:

  • Greater extraction control

  • Better espresso quality (full-bodied)

  • Thicker crema

  • Great for learning proper technique


Summary

Whether you have a pressurised or non-pressurised basket, you will be able to make good tasting coffee. Pressurised baskets are great for beginners but if you really want to take your espresso making to the next level then a non-pressurised basket is the way to go. You will get a full bodied espresso shot with greater flavour and depth, similar to what you would expect from your local coffee shop.