How to descale a coffee machine

Descaling coffee machines is a process that users tend to forget, but it is more important than it seems. Water contains, as we all know, various elements that are essential for human life, including calcium and magnesium. But… when water is heated (which happens in coffee machines and many other household appliances), calcium and magnesium decompose and form solid lime.

Over time and with use, coffee machines accumulate this scale in their coffee production system and water filtration, especially in boilers and internal pipes, where the water spends most of its time.

This limescale can affect the taste of our preparations, so it is advisable to descale our coffee machine from time to time to ensure that it is kept in perfect condition.

Due to the paramount importance of this process, we have decided to treat it with the importance it deserves. For this reason, we have prepared several guides with detailed descaling processes for the main brands of coffee machines and some additional tips on the solution you should use to descale your coffee machine. Here you have them all:

How to decalcify a coffee machine (step by step):

Without prejudice to the fact that you go to any of the articles we have just linked to you before, we are going to explain in this section the generic process to decalcify any coffee maker, whatever type and brand it is.

  • Fill the tank with water, and pour in your decalcifier (it can be a chemical solution, the manufacturer’s decalcifier, or some natural mild acid such as vinegar or lemon).
  • Place a large pitcher or container under the coffee maker’s outlet spout.
  • Once you have the solution in the tank, start the section. Wait for the water to warm up and begin a preparation cycle. As if you were going to make a coffee, but without coffee, of course.
  • Be careful to collect the hot water with the decalcifier that goes out. The idea is that during the process, the hot water mixed with the decalcifying liquid will descale the sediments and remains of lime that may be in the internal pipes.
  • If possible, repeat this process a couple of times to make sure if the coffee maker allows it, cycle with cold water and another with hot water.
  • Once the decalcification process is finished, rinse and wash the water tank thoroughly. As a precautionary measure, making an additional water cycle (without coffee) is advisable before making our first cup after cleaning.