Maintenance
Descaling Your Espresso Machine: A Complete Guide
Descaling removes mineral buildup from your machine's internal water path — a maintenance step that matters more the harder your local water is, and one that is easy to postpone until it becomes a bigger problem.
Why scale builds up
Minerals naturally present in water, especially in harder water, deposit as scale inside the boiler and water lines as water is heated repeatedly — the same basic process that causes limescale buildup in a kettle, just inside a more complex and less visible system.
Signs it is time
Slower heating, reduced steam pressure, or unusual noises during heating are common signs of scale buildup, though the underlying cause is not always visible from outside the machine until it is fairly advanced.
Use the process for your specific machine
Follow your manufacturer's documented descaling procedure and recommended descaling solution rather than generic instructions — some machines have a specific descaling program or cycle built in, and using the wrong solution or process can damage seals not designed for it.
How descaling frequency relates to your water
If your water is documented as hard and you are not using a filter (see our water requirements guide), expect to descale on a shorter interval than the manufacturer's default recommendation, which is often written assuming moderate water hardness. In a genuinely hard-water area without filtration, descaling every one to two months rather than every three to six is a more realistic expectation.