4 stage RO/DI needs changing but which filter(s) ??

[MrsBugmaster]

Membranes usually last 2 to 3 yrs. I'd change all but the membrane.

[Piscez]

My Manual says change the canisters after 6 months and the others after 1 year, course isn't this all dependent on our originating tap water supply quality?

[kien]

Originally Posted by Piscez

My Manual says change the canisters after 6 months and the others after 1 year, course isn't this all dependent on our originating tap water supply quality?

I think I remember reading that somewhere too. 6 months. I guess I'm a little over 6 months so it would make sense that now is about the time I should be changing them.