
How to Remove Limescale from a Kettle
Before you reach for the vinegar, check your kettle's manual, because a number of manufacturers specifically advise against it. Acetic acid attacks the rubber seals and any exposed aluminum, and in a plastic kettle the smell can linger through five rinses. Citric acid dissolves the same calcium carbonate without either problem, which is why it is what most manuals recommend. Limescale is a chemical deposit rather than dirt, so the whole job is choosing the right acid and giving it time. Here is each method with exact quantities, how long to actually leave it, and the part of the kettle that re-deposits scale into the water the day after you clean it.



