The Water Factory SQC-PRO drinking water system comes included with the necessary three filters. These are:
(1) 47-5570262--Sediment
(1) 47-5570462--Sediment/Carbon
(1) 47-5571062--Post Carbon
This set of filters for the SQC-PRO should be replaced once every twelve months. However, the replacement membrane filter should be replaced once every four years, and is not included in this set. Click for the 66-470662 membrane.