Entkalkt

Entkalkt describes the state or act of removing limescale from a device or surface. In English, the equivalent is descaled. Limescale consists mainly of calcium and magnesium carbonates that accumulate in areas with hard water, such as kettles, coffee machines, boilers, and plumbing. Descaling restores heat transfer efficiency, restores flow, and extends appliance life.

Descaling is typically performed with acids that dissolve mineral deposits. Common agents include citric acid, vinegar (acetic acid), sulfamic acid, or commercial descalers. The process can be simple soaking, repeated rinsing, or circulating the descaler through the appliance. In larger systems, professional methods use controlled circulation and monitoring to avoid damage.

Safety and environmental notes: follow the product instructions, wear protective gloves and eye protection, and thoroughly rinse after treatment. Do not mix acidic descalants with chlorine-containing cleaners. Some materials may be sensitive to acids; test a small area first. Dispose of used solutions according to local regulations and rinse away residues to prevent corrosion.

Prevention: reducing future buildup can involve using softened water, installing a water-softening device, or using filtered water. Regular descaling based on water hardness and appliance usage helps maintain efficiency. Indicators of the need to descale include longer heating times, slower flow, and audible scale deposition.