Daily cleaning keeps your Breville running smoothly and tasting fresh

A clean Breville coffee maker brews better coffee and lasts longer. Daily rinsing takes five minutes; a deep clean happens monthly and takes about 20 minutes. The machine has removable parts that trap old grounds and mineral buildup, and both will affect flavor and performance if left alone.

This guide walks you through what to clean every day, what to clean weekly, and how to descale—the monthly step that removes mineral deposits from inside the machine. You will need hot water, a damp cloth, and a commercial descaling solution made for coffee makers (citric acid or a branded product like Cafiza).

Key Takeaways

  • Rinse the portafilter, basket, and shower screen with hot water when ready after brewing, before grounds dry and stick.
  • Soak removable parts in hot water with a small amount of descaling solution once a week to dissolve oils and residue.
  • Descale the internal boiler monthly by running the solution through the group head, which removes mineral buildup that slows heating.
  • Never soak the machine body itself or pour water into the electrical base—only the removable metal parts go in water.
  • A blocked shower screen or group head is the most common reason a Breville stops dispensing water evenly, and cleaning fixes it in minutes.

What to rinse right after each use

As soon as you finish brewing, remove the portafilter (the handle that holds the basket) and tap out the used grounds into the trash. Rinse the portafilter and basket under hot running water, rubbing with your thumb to clear any grounds stuck to the sides or bottom. The basket should feel smooth and look shiny when you are done.

Next, run water through the group head—the part on the machine where the portafilter locks in. Lock the empty portafilter in place, position a cup underneath, and press the brew button for two to three seconds. This flushes out loose grounds. Unlock the portafilter and repeat once more with just water, no portafilter attached, to clear the shower screen (the flat metal disc inside the group head).

Wipe the outside of the group head and the shower screen with a damp cloth. If you see a ring of dried grounds around the shower screen, use a soft brush or an old toothbrush to gently scrub it away. This takes 30 seconds and prevents buildup that blocks water flow.

Weekly soaking for removable parts

Once a week, soak the portafilter, basket, and shower screen in hot water mixed with a small pinch of descaling solution—about one-quarter teaspoon per cup of water. Let them sit for 15 to 20 minutes. The solution dissolves oils and mineral deposits that rinsing alone cannot remove.

After soaking, scrub each part gently with a soft brush or cloth, then rinse thoroughly under hot running water until the water runs clear and you smell no chemical odor. Dry with a clean cloth and set aside. If your Breville came with a cleaning basket (a small metal cylinder), soak that too.

Do not soak the machine body, the steam wand, or any electrical parts. Only the removable metal pieces go in water.

Cleaning the steam wand after milk drinks

If you make lattes or cappuccinos, clean the steam wand when ready after steaming milk. Milk proteins dry fast and become very hard to remove. Wipe the outside of the wand with a damp cloth while it is still warm, then purge steam by pressing the steam button for one second over a sink or cup.

Once a week, soak the wand tip (if it is removable on your model) in hot water with a tiny amount of descaling solution for five minutes, then use a thin brush or pipe cleaner to clear the small holes where steam comes out. Rinse and dry. If milk buildup blocks the holes, the wand will sputter instead of producing smooth steam.

Monthly descaling of the boiler and group head

Descaling removes mineral deposits from inside the machine—the parts you cannot see. Hard water leaves calcium and magnesium behind, which slows heating and reduces water pressure. You will notice the machine takes longer to heat or water dribbles instead of flowing steadily. Descaling fixes this.

Fill the water tank with a solution made from one part commercial descaling solution to three parts water. Follow the ratio on your descaling product's label, as concentrations vary. Lock an empty portafilter in place and position a large cup or bowl underneath to catch liquid—you will need at least 500 milliliters of space.

Press the brew button and let the solution run for 10 seconds, then stop. Wait 10 seconds. Repeat this cycle—10 seconds on, 10 seconds off—for five to seven minutes until the tank is empty. The solution will be dark brown or black as it dissolves mineral buildup.

Refill the tank with fresh water only (no solution). Run water through the group head using the same 10-on, 10-off cycle until the water runs completely clear with no smell—this usually takes two full tanks. This rinse step is critical; leftover descaling solution will taste bitter and damage the machine if not fully flushed.

Clearing a blocked shower screen or group head

If water comes out unevenly or stops flowing, the shower screen or group head is likely blocked by old grounds or mineral buildup. First, try the weekly soak described above. If that does not work, use a cleaning tablet made for espresso machines (Cafiza tablets are common).

Fill a small cup with hot water and drop in one cleaning tablet. Let it dissolve for a minute. Lock an empty portafilter in place and slowly pour the solution through the group head, letting it soak for 30 seconds. Press the brew button for two seconds to push solution through, then stop and wait 30 seconds. Repeat this soak-and-push cycle three times.

Run fresh water through the group head for one full minute to rinse away all tablet residue. If water still does not flow evenly, the blockage is deeper inside; contact Breville support or a local espresso machine repair shop.

Cleaning the water tank and filter basket

Empty and rinse the water tank once a week, especially if your water is hard. Mineral deposits can build up on the tank walls and clog the intake tube. Remove the tank, empty any remaining water, and rinse the inside under hot running water. Use a soft brush to scrub the walls if you see white or tan deposits.

If your Breville has a removable water filter basket inside the tank, rinse that too. Some models include a charcoal filter that needs replacing every two to three months—check your manual for the replacement schedule and part number. A clogged filter reduces water flow and makes the machine work harder.

Common mistakes that damage the machine

Never use vinegar to descale a Breville. Vinegar is acidic enough to damage the internal seals and gaskets over time, even though it works on some other machines. Use only a descaling solution made for espresso machines, which is formulated to be gentler on the components.

Do not soak the machine body, the electrical base, or the steam wand connector in water. Water inside the electrical housing causes short circuits. Only the removable metal parts—portafilter, basket, shower screen, and cleaning basket—are meant to be submerged.

Do not skip the rinse step after descaling. Leftover solution corrodes internal parts and tastes terrible. Run at least two full tanks of fresh water through the group head, even if it seems like overkill.

Do not use abrasive scrubbers or steel wool on the shower screen or group head. These scratch the metal and create tiny crevices where grounds and mineral deposits hide. Use soft brushes, cloth, or plastic scrubbers only.

Frequently Asked Questions

How often should I descale my Breville?

Once a month if you have hard water, or every two months if your water is soft. If you notice the machine heating slowly or water trickling instead of flowing, descale when ready. Hard water varies by location—if you are unsure, descale monthly to be safe.

Can I use tap water or do I need filtered water?

Tap water works, but filtered or distilled water reduces mineral buildup and descaling frequency. If you use tap water, descale monthly. If you use filtered water, you may descale every two months. Never use only distilled water long-term, as the machine needs some minerals to function properly.

What if water leaks from the group head during cleaning?

A small amount of dripping is normal. If water streams out, the shower screen gasket may be worn or the screen may be installed backward. Remove the shower screen, check that the rubber gasket is intact and not cracked, and reinstall it with the flat side facing down into the group head. If leaking continues, the gasket needs replacement.

Is it safe to clean the machine while it is plugged in?

Unplug the machine before soaking any parts or doing deep cleaning. For daily rinsing of the portafilter and group head, the machine can stay plugged in and warm, but always turn off the power switch first. Never pour water directly into the electrical base or over the cord.

Why does my coffee taste bitter even after cleaning?

Bitter taste usually means old oils are still trapped in the group head or shower screen. Soak these parts in descaling solution for 20 minutes, scrub with a soft brush, and rinse very thoroughly. If the taste persists, descale the boiler as described above. It may take two cleaning cycles to fully remove old buildup.