Cleaning your Breville with tablets takes about 15 minutes and uses the machine's built-in backflush cycle
Breville espresso machines come with a cleaning cycle designed to run cleaning solution through the group head and internal lines. Cleaning tablets dissolve in water to create that solution. You insert a blank basket (no coffee) into the group head, add the tablet solution, and run the backflush cycle several times until the water runs clear. This removes coffee oils and residue that build up inside the machine and affect taste.
The process is the same whether you own a Breville Barista Express, Barista Pro, or other Breville espresso model — the group head and backflush function work the same way across the line. You will need Breville-brand cleaning tablets or a compatible espresso machine cleaning tablet, a blank basket (usually included with your machine), and about 10 minutes.
Key Takeaways
- Fill the group head with cleaning tablet solution, insert a blank basket, and run the backflush cycle five to eight times until water runs clear.
- Backflush means pressing the group head button for two seconds, releasing for one second, and repeating — this pushes water backward through the group head to dislodge buildup.
- Run a full water-only backflush cycle after the cleaning tablets to rinse out all residue before you make espresso again.
- Clean your Breville with tablets once a week if you use it daily, or every two weeks if you use it a few times per week.
What cleaning tablets do inside your Breville
Espresso machines accumulate coffee oils and fine particles inside the group head and the internal lines that carry water. Over time, these deposits narrow the water channels and change how water flows through the coffee puck, which makes your shots taste flat or bitter. Cleaning tablets dissolve in hot water to create a solution that breaks down those oils without damaging the machine's internal seals.
Breville cleaning tablets are formulated specifically for espresso machines and are safe for the rubber gaskets and metal components inside your group head. Other cleaning products — vinegar, baking soda, or general descaling solutions — can damage seals or leave residue that affects taste. Stick to tablets made for espresso machines.
Step-by-step backflush cleaning with tablets
Step 1: Prepare the machine and tablet solution. Turn on your Breville and let it heat for 30 seconds. Fill a small cup or bowl with hot water from the group head (just run the water for a few seconds). Drop one cleaning tablet into the water and stir until it dissolves completely. The water should turn slightly cloudy or brown.
Step 2: Insert the blank basket. Remove the portafilter from the group head. Insert the blank basket (a solid metal disc with no holes) into the portafilter. Reattach the portafilter to the group head and lock it in place.
Step 3: Run the backflush cycle. Position a cup or sink under the group head to catch water. Press and hold the group head button for two seconds, then release for one second. Repeat this press-release pattern five to eight times. You will see water and cleaning solution spray out. This is the backflush cycle — it forces water backward through the group head to dislodge buildup.
Step 4: Refill and repeat. After five to eight cycles, the cup of cleaning solution will be empty. Refill it with hot water and another tablet, stir, and repeat the backflush cycle. Do this two to three times total until the water coming out runs clear with no brown or cloudy color.
Step 5: Rinse with water only. Remove the cleaning tablet solution. Fill your cup with plain hot water from the group head. Run the backflush cycle five to eight more times with water only to rinse out all cleaning residue. This step is important — any leftover tablet solution will affect the taste of your next shot.
How often to clean your Breville with tablets
If you use your Breville daily, run a tablet cleaning cycle once a week. If you use it three to four times a week, clean it every two weeks. If you use it less often, once a month is enough. These intervals assume you are also doing daily maintenance — purging the group head (running water through it without the portafilter) and wiping the shower screen after each shot.
You will know your machine needs cleaning sooner if your shots start to taste flat, sour, or if the water flow slows down noticeably. These are signs that oil buildup is restricting water flow. A cleaning cycle will restore the taste and flow.
Cleaning the portafilter and basket separately
While you are cleaning the group head with tablets, also soak your portafilter and regular espresso basket in hot water with a cleaning tablet for five to ten minutes. This removes coffee oils from the outside of the basket and the inside of the portafilter handle. After soaking, rinse thoroughly under hot running water and dry with a clean cloth.
Do not soak the blank basket — it does not need it. Just rinse it under hot water after you finish the backflush cycles.
What to do if your Breville has a clogged group head
If water barely drips out during backflush, or if you have not cleaned the machine in several months, you may have heavy buildup. Run the tablet cleaning cycle as described, but do it three to four times instead of two to three. Use two tablets per cycle instead of one. Be patient — let the cleaning solution sit in the group head for 30 seconds between backflush cycles to give it time to dissolve stubborn deposits.
If water still will not flow after multiple cleaning cycles, the group head may have a blockage that requires disassembly. At that point, contact Breville support or a local espresso machine repair shop. Do not force the portafilter or try to take the group head apart yourself — you can damage the seals.
Descaling versus cleaning tablets — which one do you need?
Cleaning tablets remove coffee oils and buildup from the group head and internal lines. Descaling removes mineral deposits (limescale) that build up from hard water. They are two different processes. If you have hard water, you need to descale your Breville every one to three months, depending on your water hardness. Descaling uses a different solution and a different cycle — check your Breville manual for the descaling steps.
You should do both: clean with tablets weekly or biweekly, and descale every one to three months. If you use filtered water or a water softener, you may only need to descale every six months.
Frequently Asked Questions
Can I use any espresso machine cleaning tablet, or do I need Breville brand?
Breville-brand tablets are formulated for Breville machines, but other espresso machine cleaning tablets (like Cafiza or Cafetto) work the same way. The key is that the tablet must be made for espresso machines, not for drip coffee makers or general cleaning. Check the label to confirm it is safe for group heads and rubber gaskets.
What if cleaning solution comes out of the shower screen instead of the group head spout?
That means water is flowing backward through the shower screen instead of through the group head. Remove the portafilter and check that the blank basket is seated flat and fully inserted. If it is loose or tilted, water will escape around it. Reinsert it firmly and try again.
How long does a box of Breville cleaning tablets last?
A standard box contains 10 tablets. If you clean once a week and use one tablet per cleaning cycle, a box lasts about 10 weeks. If you clean every two weeks, it lasts about 20 weeks. Tablets are inexpensive and widely available online and at kitchen supply stores.
Will cleaning tablets damage the rubber gasket in my group head?
No. Espresso machine cleaning tablets are formulated to be safe for rubber gaskets and seals. Breville tablets and other espresso-specific brands will not damage them. Avoid vinegar, baking soda, or general descaling solutions — those can degrade gaskets over time.
Do I need to clean the water tank after using cleaning tablets?
No. The cleaning solution stays in the group head and portafilter — it does not go into the water tank. You do not need to empty or rinse the tank. Just refill it with fresh water after you finish the cleaning cycle.