Coffee makers with water hardness control

Water hardness

— the coffee maker offers the feature of adjusting the water hardness setting to accommodate the type of water used. This setting is important because the heating element of the coffee maker tends to accumulate scale over time, which requires regular cleaning or decalcification. The rate at which scale builds up depends on the hardness of the water, with harder water resulting in faster scale accumulation and more frequent cleaning. The coffee maker assesses the condition of the heating element based on the water hardness setting entered in the settings menu and the operating time since the last cleaning. Therefore, it is crucial to correctly set the water hardness to ensure timely notifications for decalcification. Typically, coffee makers equipped with this function provide a water hardness indicator with four settings: very soft, soft, hard, and very hard.