Some statements in the market that ceramic filter elements do not need to be replaced are false, because filtration depends on filter elements, and it is impossible to use them all the time without replacement. My home is Leica LAICA940 1 pure drinking machine. The machine comes with six double guide filter elements and an ultrafiltration membrane, which is almost enough for one year. Only these two kinds of filter elements need to be replaced later. Compared with other kitchen water purifiers or drinking bottled pure water, it is much more affordable and much better.