What does a descaler do?
A descaling is a metal cleaning process that removes the buildup of limescale i.e. hard chalky deposit (off-white color) that can damage pipes and appliances. A descaler is used to remove limescale from metal surfaces in contact with hot water, such as in boilers, water heaters, and kettles as well. Limescale is either white or brown in color due to the presence of iron compounds.