Descale the coffee maker with vinegar

Especially with hard water, a coffee maker calcifies quickly. In order to prevent the hoses from becoming clogged or the coffee machine consuming more power, it must be descaled from time to time. We explain how to dispense with chemical descaler and instead descale your coffee maker with vinegar.

What should you look for when decalcifying with vinegar?

Vinegar is acidic. Therefore, it comes to the decalcification to smell and the device can accept the biting taste. You should also make sure that your skin does not come into contact with the vinegar essence. Therefore use gloves when decalcifying!


Heating the vinegar produces a pungent odor that causes the eyes to tear and irritate the mucous membranes. Therefore, when decalcifying with vinegar, you should ensure good ventilation and never keep your nose over the device! It is best to keep a sufficient distance to the device during decalcification.


Fine palates may u.U. after decalcifying, instead of a positive change in taste, it may taste a light vinegar note in the coffee. To prevent this from happening, it is absolutely necessary to do one or more idling after descaling: Fill the water tank with water, place the coffee pot on the hot plate and let the water run through without filter and coffee. Repeat the process if necessary.

The right mixing ratio

The normal household vinegar, which is also used for cooking or for salads, has a very low acid content of about 5%. Therefore, it is advisable to use more acidic vinegar essence: this has an acid content of 25%. Dilute the vinegar essence with two thirds water. Thus, you get an acidity of about 9%, which is still higher than the content of household vinegar.
So if you still want to descale with household vinegar, just use it pure.

Descale step by step

1. Mix

Mix one-third of vinegar essence with two-thirds of cold water in a glass or metal jar. Put the mixture in the water container of your coffee machine. Not enough? Add a little more water and a few drops of vinegar essence.

2. Turn on briefly

Turn on the coffee machine briefly so that the hoses suck in the mixture. Turn off the machine as soon as the first drop drips into the pot. Let the solution work for one hour.

3. Run through water

After one hour, turn the coffee machine back on and let the solution run through completely. Then refill the water tank with water (without vinegar) and idle.

4. Not clean?

If you still see limescale, you can increase the acidity slightly (for example, one-half water, one-half vinegar essence) and try again.

Tips & Tricks

If you can not stand the smell of vinegar, there are other alternatives to descale your coffee maker. Use baking powder or denture cleaner. Learn more about it here.

Video Board: Clean Coffee Maker Vinegar - How to Clean Coffee Maker