A: Depends what your tap water is like. Look at estimated water yields per filter at Zero Water's website
A: my pitcher holds 2 liters and the filter lasts about 2-3 weeks if I make 2 liters/day. It also comes with a handy TDS meter if you don't like to keep a log
A: approx 3-5 weeks per person
A: Hi Heather, I would say 4-6 months, depending on how much water you drink a day. I have both the Zero Water pitcher and the Brita filter and have to say that the Brita filter does not last nearly as long. Hope this helps.
A: ZR-001 comes with one replacement filter, ZR-006 comes with 6 filters. There is no difference in the actual product, the only difference is quantity.
A: There is no difference in the filters themselves, the model number has to do with quantity. ZR 001, is for a single filter, ZE-006 is for a 6 pack of replacement filters.