Daily rinse and empty the drip tray after each use

The fastest way to keep your Breville running well is to rinse the removable parts while the machine is still warm. After you brew, turn off the machine and let it cool for a few minutes. Remove the portafilter (the handle that holds the ground coffee), knock out the used grounds into the trash, and rinse it under running water. Wipe it dry with a cloth.

Empty the drip tray—the shallow pan that sits under the group head—and rinse it too. Coffee oils and water sit in that tray and can start to smell or grow mold if left for days. Put it back dry. This five-minute routine prevents buildup that would otherwise require deep cleaning later.

Key Takeaways

  • Rinse the portafilter and empty the drip tray after every use to prevent oil and mold buildup.
  • Backflush the group head once a week by running water through it without the portafilter in place, which clears coffee grounds from the shower screen.
  • Descale your Breville every one to three months depending on your water hardness, using Breville's descaling solution or white vinegar and water.
  • Soak the shower screen and dispersion plate in hot water and espresso cleaner monthly to dissolve dried coffee oils that daily rinsing misses.
  • If water flows slowly or tastes bitter, descaling is overdue; if the machine leaks, the group head gasket may need replacement.

Backflush the group head once a week

The group head is the part of the machine where water comes out and the portafilter locks in. Over time, fine coffee grounds and oils get stuck in the shower screen (the flat piece with small holes at the bottom of the group head). Backflushing pushes water backward through those holes to clear them out.

To backflush, turn off the machine and let it cool slightly. Remove the portafilter completely—do not leave it in the group head. Turn the machine back on and hold a cup underneath. Press the brew button for one second, then release. Water will spray out. Repeat this five or six times. You should see some grounds and brown water come out at first, then clearer water. Stop when the water runs clear. This takes about two minutes and keeps the shower screen from clogging.

Descale every one to three months

Descaling removes mineral buildup inside the machine that comes from your tap water. Hard water (water with high mineral content) builds up faster than soft water, so the timing depends on where you live. If you have very hard water, descale monthly. If you have soft water, every three months is enough. A straightforward test: if water flows more slowly than it used to, or if your espresso tastes bitter, descaling is overdue.

Breville sells a descaling solution made for their machines, which is the safest choice. You can also use white vinegar mixed half-and-half with water. Fill the water tank with your descaling liquid. Place a large cup or bowl under the group head. Turn on the machine and let it heat. Press the brew button and let water run for ten seconds, then stop. Wait thirty seconds. Repeat this cycle for about five minutes until the tank is empty. Let the machine sit for fifteen minutes with the descaling liquid inside.

Refill the tank with fresh water only—no vinegar or descaling solution. Run water through the group head again for another five minutes to rinse out all the descaling liquid. Empty and refill the tank one more time and run water through for two more minutes. This rinsing step is important: leftover vinegar or descaling solution will affect the taste of your coffee.

Soak the shower screen and dispersion plate monthly

The shower screen and the dispersion plate (a small flat piece above it) collect dried coffee oils that daily rinsing does not fully remove. Once a month, unscrew these parts from the group head—most Breville models have a small wrench or tool for this in the box, or you can use a small adjustable wrench.

Fill a cup with hot water and add a tablespoon of espresso machine cleaner powder (Cafiza is a common brand, sold online and at coffee shops). Drop the shower screen and dispersion plate into the cup and let them soak for fifteen to twenty minutes. Use an old toothbrush to gently scrub away any brown buildup, then rinse both parts under running water until the water runs clear. Dry them and screw them back into the group head. Hand-tighten only—do not use the wrench to tighten, or you may crack the screen.

Clean the steam wand after every milk drink

If you make lattes or cappuccinos, the steam wand needs attention right away. Milk proteins dry hard and fast on the wand, and once they harden they are difficult to remove. As soon as you finish steaming, wipe the outside of the wand with a damp cloth while it is still warm. Then hold the wand over a sink and press the steam button for two or three seconds to blow out any milk inside the tip.

Once a week, soak the wand tip (if it unscrews) in hot water with espresso cleaner for ten minutes, then use a thin pipe cleaner or a small brush to clear the inside hole. If the tip does not unscrew, use the pipe cleaner while the wand is soaking. Dry everything before the next use. Milk left on the wand will turn rancid and make your next drink taste sour.

Replace the group head gasket when water leaks

The group head gasket is a rubber ring that seals the portafilter to the group head. Over time—usually after one to two years of regular use—it wears out and stops sealing properly. When this happens, water leaks out around the portafilter instead of flowing through the coffee.

Replacing the gasket is a straightforward job. Turn off and unplug the machine. Unscrew the portafilter from the group head. Look inside the group head and you will see a rubber ring. Use a small flathead screwdriver to pry it out gently. Buy a replacement gasket made for your specific Breville model (search online for your model number plus "gasket"). Push the new gasket into the groove, making sure it sits evenly all the way around. Screw the portafilter back in and test. The leak should stop.

Frequently Asked Questions

Can I use vinegar instead of Breville descaling solution?

Yes. Mix white vinegar and water half-and-half and use it the same way you would use descaling solution. Vinegar works well but smells strong. After descaling with vinegar, run extra rinse cycles—at least three full tanks of fresh water—to remove the vinegar smell completely.

What if water comes out of the group head very slowly?

Slow flow usually means mineral buildup inside the machine or a clogged shower screen. Descale first. If the flow is still slow after descaling, backflush the group head several times. If it remains slow, the group head may need professional cleaning or the shower screen may need replacement.

How do I know if my water is hard or soft?

You can buy a water hardness test strip online or at a hardware store for a few dollars. You can also ask your local water utility—they publish water hardness data. Hard water usually means descaling every month; soft water means every two to three months.

Is it safe to backflush every day?

Yes, backflushing is safe and gentle. Many espresso shops backflush multiple times per day. Once a week is a good routine for home use, but daily backflushing will not harm the machine.

What happens if I do not descale?

Mineral buildup slows water flow, makes espresso taste bitter or weak, and can eventually damage the heating element or pump. Descaling every one to three months prevents this and keeps your Breville working well for years.