Cleaning the coffee machine: How to do it with ultrasound
For many, the aroma of freshly brewed coffee is the perfect way to start the day. To ensure the coffee doesn't taste bitter and the machine functions reliably, regular cleaning is essential. Residues from coffee oils, limescale, or ground coffee not only impair the aroma but can also shorten the lifespan of the machine. Ultrasonic cleaning is a particularly thorough and gentle method.
Why is cleaning coffee machines so important?
With every cup of coffee, grease, oil, and limescale build up in the machine. These residues lead to:
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bitter taste,
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reduced flow,
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higher energy consumption,
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shortened lifespan of the coffee machine.
Filters, sieves, and ceramic elements are particularly difficult to clean in portafilter machines, coffee grinders, and pod machines. This is where the ultrasonic cleaner comes into its own.
How does ultrasonic cleaning work?
Ultrasonic devices generate high-frequency sound waves that create tiny bubbles in the cleaning fluid. These bubbles implode and dissolve dirt particles, coffee oils, and limescale deposits, even in hard-to-reach areas. The result: thorough cleaning without harsh chemicals or mechanical scrubbing .
Which parts can be cleaned with ultrasound?
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Portafilters and filter inserts
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Coffee filters and spouts
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Parts of coffee grinders (e.g. ceramic grinder)
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Water tank inserts and lids
Electrical components such as heating elements or the machine itself must of course not be placed in the ultrasonic bath.
Don't forget to descale
Limescale is one of the biggest enemies of a coffee machine. It builds up on heating elements and water tanks, leading to longer brewing times and higher energy consumption. Regular descaling , at least every three months, is recommended, especially for hard tap water. In addition to ultrasound, a solution containing baking powder or baking soda can help.
The best ultrasonic cleaners for coffee machines
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Emmi-D21 (1.5 L): Ideal for private households, reliably cleans filters and small components.
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Schalltec S3 0 (2.8 L): Compact and effective, suitable for smaller coffee machines and accessories.
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Emmi-60 HC Plus (6.0 L): With heating function, perfect for catering or large quantities of individual items.
For best results, use in combination with a cleaning concentrate such as EM-090 and distilled water.
Conclusion: Ultrasound for full coffee enjoyment
Cleaning your coffee machine with an ultrasonic cleaner is an efficient way to maintain its taste and performance over time. Whether in a home or a café, clean components ensure aromatic coffee and a long service life for the machine. Regular maintenance is therefore worthwhile in any case.
