If you live in certain parts of the UK, you will know what a problem limescale can be, turning a brand new kettle into white fury mess in a matter of weeks.
Limescale is a particular problem with the older style electric kettles, which have an exposed element. A great number of modern electric kettles have a concealed element; this takes the form of a solid internal base in the kettle that is the heating element. As this is a polished flat surface it is more difficult for the limescale to stick to and as a consequence although limescale does build up, it very quickly detaches from the kettle.
In Norfolk where the water is particularly hard, an old style element would need to be de-scaled every couple of months, whereas with a concealed element its just a case of giving the kettle a good rinse out every month or so.
The difference is significant; you don’t tend to notice as your kettle takes longer and longer to boil due to the limescale build up. Thankfully the concealed element all but removes this issue.
The concealed element is becoming the cordless kettle of yesteryear. Concealed element kettles are becoming the norm, rather than the exception. That being said, if you live in a hard water area and you’re looking for an electric kettle, I would definitely recommend you go for one with a concealed element.
