As someone who lives in a pretty hard water area, I'm used to to the weekly cleaning of descaling the kettle with its fast build up of limescale. However with this kettle and built in filter so far it's been non existing, absolutely love it! The water tastes purer and its so easy to use I expected alot of faff but not at all. The filter cartridge is easy to fit and built in so when u fill the kettle it's used. There's even a handy count down screen on the top so you can see when your due to change the cartridge! The design is beautiful and I'm a fan the pretty blue light when it's boiling and seeing the bubbles. Definitely love this kettle