Use Breville's cleaning tablets in the group head and water tank to dissolve built-up oils and residue

Breville espresso machines come with a cleaning tablet system designed to flush out the oils and coffee residue that accumulate inside the group head, shower screen, and internal water lines. The tablets dissolve in hot water and create a cleaning solution that reaches places you cannot scrub by hand. This process takes about 10 to 15 minutes and should happen roughly every 200 shots, or whenever your machine starts pulling shots more slowly than usual.

The tablets work best when you follow Breville's sequence exactly: soak the group head parts, run the cleaning solution through the group head, then flush the whole system with fresh water. Skipping steps or rushing the rinse leaves residue behind, which defeats the purpose and can affect the taste of your next shot.

Key Takeaways

  • Breville cleaning tablets dissolve in hot water to remove oils and residue from the group head, shower screen, and internal lines.
  • The cleaning cycle takes about 10 to 15 minutes and should be done roughly every 200 shots or when shots pull slower than normal.
  • You must soak the removable parts, run the solution through the group head, and then flush thoroughly with fresh water in that order.
  • Always remove the basket and portafilter before starting, and never run the cleaning solution through the steam wand.

What you need before you start

Gather a Breville cleaning tablet (usually sold in packs of 8 or 10), a small bowl or cup, your portafilter, and the basket that sits inside it. You will also need access to fresh water and a sink. Most Breville machines come with at least one cleaning tablet in the box, but if you have used yours, you can order replacements from Breville's website or through kitchen retailers that stock Breville parts.

Check that your machine is turned on and has reached operating temperature — the group head should be hot to the touch. If your machine has a water tank, make sure it is filled with fresh water before you begin. Some Breville models have a dedicated cleaning cycle button; others require you to manually control the water flow. Check your machine's manual to see which type you have, because the steps differ slightly.

Soaking the group head parts in cleaning solution

Fill a small bowl with about 1 cup of hot water from your machine's hot water dispenser or from the group head itself. Drop one cleaning tablet into the bowl and let it sit for 30 seconds to a minute until it dissolves completely. The water will turn brown or tan as the tablet breaks down.

Remove the portafilter and basket from the group head and place them directly into the bowl of cleaning solution. Let them soak for 10 minutes. While they soak, you can wipe down the outside of the machine and prepare your workspace. Do not soak the rubber gasket (the ring inside the group head) in the cleaning solution — it can degrade over time. The gasket stays in place during this step.

Running the cleaning solution through the group head

After the portafilter and basket have soaked, remove them from the bowl and reattach the portafilter to the group head without the basket inside. This is called running the machine "blind" — without coffee grounds. Position a cup or small bowl under the group head to catch the cleaning solution.

Press the brew button or switch (depending on your model) and let the cleaning solution flow through for about 5 seconds, then release. Wait 5 seconds, then repeat. Do this cycle 5 to 6 times. You should see brown liquid coming out; this is the dissolved oils and residue leaving the group head. If your machine has a dedicated cleaning cycle button, press it instead and let it run automatically — it will pulse the water on and off for you.

Flushing the system with fresh water

This step is critical and often rushed. After the cleaning solution has run through, remove the portafilter and run fresh water through the group head using the same pulsing method: 5 seconds on, 5 seconds off, repeated 8 to 10 times. The water coming out should be clear, not brown. If it is still brown after 8 cycles, continue until it runs clear.

Reattach the portafilter with the basket inside and run fresh water through it the same way — 5 seconds on, 5 seconds off, about 5 times. This rinses out any cleaning solution that may have pooled inside the basket or portafilter. Once the water runs clear from both the group head and the portafilter, the cleaning cycle is complete.

Cleaning the shower screen and dispersion plate

If your Breville model has a removable shower screen (the flat piece with small holes that sits at the top of the group head), unscrew it now and soak it in the remaining cleaning solution for 5 minutes. Use an old toothbrush or soft brush to gently scrub away any visible residue on the underside, then rinse it thoroughly under fresh running water until no brown liquid remains.

Some models also have a dispersion plate underneath the shower screen. If yours does, remove and clean it the same way. Screw the shower screen back in place — it should be snug but not forced. If your machine does not have a removable shower screen, you can skip this step; the cleaning solution has already flushed the internal passages.

When to clean and what to watch for

Run a cleaning cycle roughly every 200 shots, or sooner if you notice shots pulling more slowly than usual. Slow flow is the first sign that oils are building up inside the group head. You can also clean more frequently if you use darker roasts or oily beans — they leave more residue than light roasts.

If you notice that water is leaking from around the group head during the cleaning cycle, the rubber gasket may be worn and need replacement. Breville sells replacement gaskets separately, and they take about 2 minutes to swap out. If water leaks from the portafilter connection itself, make sure you have screwed the portafilter in firmly — it should be hand-tight, not loose.

Frequently Asked Questions

Can I use regular descaling tablets instead of Breville cleaning tablets?

No. Descaling tablets remove mineral buildup from water lines and are meant for the water tank, not the group head. Breville cleaning tablets are formulated to dissolve oils and coffee residue specifically. Using the wrong product can damage internal seals or leave a chemical taste in your shots. Always use Breville's tablets for group head cleaning.

What if I run out of cleaning tablets?

You can order replacement tablets from Breville's website or from retailers that stock Breville parts. They are inexpensive and usually ship within a few days. In the meantime, you can do a partial clean by running hot water through the group head using the pulsing method, but this will not remove oils as effectively as the tablets do.

Do I need to clean the steam wand during this cycle?

No. Never run the cleaning solution through the steam wand — it can damage the internal valve. Clean the steam wand separately by wiping it with a damp cloth when ready after steaming milk, and soak the tip in hot water once a week to clear any milk buildup.

How long does the whole cleaning cycle take?

From start to finish, about 10 to 15 minutes. The soaking takes 10 minutes, running the solution through takes 2 to 3 minutes, and flushing takes another 3 to 5 minutes depending on how many cycles you need to run before the water runs clear.

Can I use the machine right after cleaning?

Yes, once the water runs clear. Run one or two test shots without coffee to make sure no cleaning solution remains, then discard those shots. Your next regular shot will taste normal.