Descaling removes mineral buildup that slows water flow and weakens your brew

Descaling is running a cleaning solution through your Breville coffee maker to dissolve calcium and mineral deposits that accumulate inside the machine. Hard water leaves these deposits on heating elements and in internal tubes, which makes your coffee maker heat more slowly, produce weaker coffee, and eventually stop working. Breville recommends descaling every three to six months, depending on your water hardness.

The process takes about 15 minutes and uses either Breville's own descaling solution or white vinegar. You'll run the solution through the machine empty, let it sit, then flush it out with fresh water. No disassembly required.

Key Takeaways

  • Descale your Breville every three to six months by running a cleaning solution through an empty machine, then flushing with water.
  • Use either Breville Descaling Solution or white vinegar mixed with water in a 1:1 ratio.
  • The entire process takes about 15 minutes and requires no tools or parts removal.
  • If your machine has a descaling light or indicator, it will tell you when descaling is due.

What you'll need before you start

Gather these items before you begin: your Breville coffee maker, a large empty cup or container that fits under the group head or portafilter, and either Breville Descaling Solution or white vinegar. If using vinegar, mix equal parts white vinegar and water—a 1:1 ratio. You'll also need fresh water for rinsing afterward.

Check your Breville's manual to confirm which descaling solution your specific model accepts. Most Breville machines work with both Breville's branded solution and white vinegar, but some espresso models have specific requirements. The manual will also tell you whether your machine has a descaling mode or if you straightforward run water through normally.

Step-by-step descaling process

Step 1: Empty the water tank and fill it with descaling solution. Remove the water tank from your Breville and empty any remaining water. Fill it with your chosen descaling solution—either straight Breville Descaling Solution or your vinegar-and-water mixture. Reattach the tank to the machine.

Step 2: Place a container under the group head or spout. Position a large cup or container under wherever water normally comes out—the group head on an espresso machine, the drip spout on a filter machine, or the steam wand if you're descaling that. The container needs to hold at least 16 ounces because you'll be running solution through.

Step 3: Run the solution through without a filter or portafilter. Turn on your Breville as if you were making coffee, but do not insert a filter basket or portafilter. Let the solution run into your container for about 5 seconds, then turn it off. Repeat this on-off cycle—5 seconds on, 10 seconds off—for about 5 minutes. This allows the solution to soak inside the machine and break down mineral deposits.

Step 4: Let the machine sit for 15 to 20 minutes. After you've cycled the solution through, turn off the machine and let it rest. The descaling solution needs time to work on buildup inside the heating element and tubes. Do not use the machine during this time.

Step 5: Flush the machine with fresh water. Empty your container, then refill the water tank with fresh water only—no more solution. Run fresh water through the machine using the same on-off cycle for another 5 minutes. This removes all traces of descaling solution. Repeat the flushing step a second time to be certain. Your machine is now ready to brew.

Signs your Breville needs descaling

Many Breville models have a descaling light or indicator on the display that turns on when minerals have built up enough to warrant cleaning. If your machine has this feature, descale as soon as the light appears. Even if your model lacks an indicator, watch for these physical signs: water flows more slowly than usual, the machine takes longer to heat up, or your espresso shots pull more slowly despite using the same grind and tamping.

If you live in an area with very hard water—water that leaves white residue on faucets or in kettles—descale every three months. If your water is soft, every six months is usually sufficient. When in doubt, descale every four months as a middle ground.

Breville Descaling Solution versus white vinegar

Breville Descaling Solution is formulated specifically for the machine and leaves no aftertaste or odor. It costs between $8 and $12 per bottle and typically lasts for one or two descaling cycles depending on your machine's size. White vinegar is cheaper—usually under $3 per bottle—and works just as well at removing mineral deposits, but the vinegar smell can linger in the machine for a day or two after descaling.

If you choose vinegar, use only white vinegar, not apple cider or other types. Mix it 1:1 with water before adding to the tank. Some people prefer vinegar because it's already in their kitchen; others prefer Breville's solution because there's no smell afterward. Either choice will descale your machine effectively.

What to do if descaling doesn't fix slow water flow

If you've descaled your Breville and water still flows slowly, the blockage may be in the shower screen (the part water sprays through) or the group head itself. Remove the shower screen—consult your manual for the exact method, as it varies by model—and soak it in descaling solution for 15 minutes, then scrub gently with a soft brush and rinse. Reattach and test.

If water flow is still slow after cleaning the shower screen, the blockage is likely deeper in the group head or heating element and requires professional service. Contact Breville support or take the machine to an authorized repair center. Attempting to disassemble the group head yourself can damage seals and void your warranty.

Frequently Asked Questions

Can I use CLR or other commercial descalers in my Breville?

No. CLR and similar products are too harsh for Breville's internal components and can damage seals and gaskets. Stick to Breville Descaling Solution or white vinegar mixed 1:1 with water. Your manual will specify which products are safe for your model.

How often should I descale if I use filtered water?

Filtered water reduces mineral buildup, so you can descale less frequently—every six to nine months instead of every three to six. However, even filtered water contains some minerals, so descaling is still necessary. If your machine has a descaling indicator, follow that instead of a set schedule.

Will descaling affect the taste of my coffee?

No, as long as you flush the machine thoroughly with fresh water afterward. Run fresh water through for a full 5 minutes after descaling to remove all solution residue. If you taste vinegar or cleaning solution in your first cup, run more water through and try again.

What if my Breville has a descaling mode?

Some newer Breville models have a dedicated descaling mode you set up from the menu. If yours does, consult your manual for the exact steps—the process is similar but the machine may automate the on-off cycling for you. Follow your manual's instructions rather than the general steps above.

Can I descale the steam wand separately?

Yes. Soak the removable steam wand tip in descaling solution for 15 minutes, then use a small brush or pipe cleaner to clear any mineral buildup inside the nozzle. Rinse thoroughly with fresh water. If the wand is not removable, run descaling solution through it using the same on-off cycle as the group head, then flush with fresh water.