Limescale
Limescale is a mineral deposit that forms when hard water is heated, posing a direct threat to the performance of espresso machines. As the water heats up, these mineral residues accumulate in the boiler, heat exchanger, and internal piping. Over time, limescale buildup reduces machine efficiency and negatively impacts the taste of coffee—introducing bitterness, metallic notes, or losing the original flavors of specialty coffee.
Beyond affecting coffee quality, limescale buildup can also create an ideal environment for bacteria growth, potentially posing health risks if the machine is not cleaned regularly.
For specialty coffee, where precision and consistency are paramount, managing limescale is essential. Maintaining optimal water quality (around 50 ppm), performing regular machine maintenance, and descaling properly not only help preserve coffee quality but also ensure a safe and enjoyable experience for coffee lovers.
