How Breville Coffee Machines Generate Steam

Breville espresso machines use a single or dual boiler system to generate steam. The water is heated inside the machine, and steam is pushed through the steam wand when you activate it. The efficiency of this process depends on several factors such as water temperature, the cleanliness of your machine, and boiler performance.

Signs of Weak Steam Pressure

Before diving into how to fix it, let’s identify signs that your steam power may be underperforming:

1. It takes a long time to steam milk: If your milk takes too long to reach the desired temperature, the steam pressure is likely too low.

2. Inconsistent froth: Large bubbles and an uneven texture indicate poor steam pressure. Your millk should have the texture of paint.

3. Hissing or sputtering sounds: Irregular sounds from the steam wand can mean the pressure isn't consistent.

Methods to Increase Steam Power on a Breville Coffee Machine

1. Descale Your Machine

One of the most common causes of reduced steam pressure is limescale build-up inside the boiler and steam wand. Limescale can clog your machine, preventing it from heating water efficiently. Here’s how to descale your Breville:

- Turn off the machine and let it cool.

- Mix a descaling solution (available in most kitchen stores or online) with water.

- Follow your machine’s manual for the descaling process, as different models have varying instructions.

- Run the solution through both the coffee and steam systems to clear any blockages.

- Rinse thoroughly with fresh water to remove any residual solution.

We recommend the Roobi Descaling Solution (View on Amazon), but make sure you check your machine is compatible before use

Tip: Regular descaling (every 1-3 months depending on usage and water hardness) can prevent future steam issues.

2. Purge the Steam Wand Before Use

A simple but often overlooked step is purging the steam wand. Before steaming milk, activate the steam wand for a few seconds to release any water trapped in the system. This prevents the machine from struggling with steam generation due to water buildup and ensures maximum steam pressure.

3. Preheat the Boiler

To maximize steam power, make sure your machine’s boiler is fully preheated. For models like the Breville Barista Express or Breville Bambino, you’ll notice the steam power is better when the machine has been warmed up for a few minutes. Waiting an additional minute or two after the machine says it’s ready can improve overall steam performance.

5. Avoid Overfilling the Jug

Always fill your milk jug about halfway—around ⅓ full to start. Overfilling limits how much air can circulate in the milk, making it harder for the steam to generate a proper vortex for micro foam. Less milk means the steam pressure will be more concentrated, resulting in better aeration.

6. Upgrade Your Steam Tip

Breville machines come with different steam tips, and upgrading to a more efficient tip can make a significant difference. Some models have a single-hole steam tip, which may not be as powerful for frothing milk. Consider switching to a **three-hole or four-hole steam tip**, which can distribute steam more evenly and at a higher rate.

There are many different steam tips available on Amazon with 3 or 4 holes which you can use to easily upgrade your machine.

7. Ensure Sufficient Water Level

Steam is generated from water in the boiler, so make sure your water tank is adequately filled. If the machine runs out of water while steaming, the pressure will drop, and you’ll experience poor performance. Keep the water reservoir full, and use filtered water to avoid mineral buildup.

8. Clean the Steam Wand Regularly

Milk residue can build up inside the steam wand, especially if you forget to wipe it after each use. Over time, this can clog the tip and reduce steam power. To clean the steam wand:

- After each use, purge the wand by turning on the steam for a few seconds.

- Wipe the exterior with a damp cloth to remove any milk residue.

- For a deep clean, remove the steam tip (if detachable) and soak it a coffee machine cleaning solution such as Puly Caff (view on Amazon) to clear any blockages. You can also use a pin to clean the holes in the steam tip.

9. Increase Boiler Temperature (Advanced)

Some advanced Breville models like the Dual Boiler or Barista Pro allow you to adjust the boiler temperature. Increasing the temperature can generate more steam, but it’s important to follow the manufacturer’s guidelines to avoid overheating the machine. Typically, a slight increase of a few degrees can boost steam pressure without affecting espresso extraction.

10. Let the Steam Build Between Uses

If you’re making multiple milk drinks in a row, allow the steam pressure to rebuild between steaming sessions. Give the machine about 20-30 seconds to regain full steam capacity before frothing your next jug of milk.

Final Thoughts

Increasing the steam power on your Breville coffee machine doesn’t require any drastic modifications—simple adjustments to your maintenance routine and usage techniques can go a long way in improving steam performance. Regular cleaning, proper purging, and ensuring optimal conditions for steam generation will help you achieve the perfect micro foam for your espresso drinks.

With these tips, you’ll be steaming milk like a pro in no time!