Watts 415 4-Stage RO Replacement Filters

This Watts system is a 4-stage system with two filter housings vertically and the membrane and post-filter mounted horizontally on top. Replace all filters except the membrane once a year. The membrane is replaced once every 2-3 years depending on your incoming water quality.

Replacement Filter Info

Sediment Filter (93023) - Replace every 6-12 months

Carbon Block Filter (OMB934-5m) – Replace every 6-12 months

RO Membrane TFC 50 GPD (555694-00) – Replace every 24 months

Inline Carbon Filter (K2533-KK) – Replace every 6-12 months

Helpful Filter Information

Not all filters have the same replacement schedule. Replace the RO membrane filter every two years. Replace all other filters every 6-12 months. Help keep your system sanitary by never using filters longer than 12 months, except the RO membrane filter, regardless of how much water you use.

Manuals & Instructions

Watts 315 415 525 Systems Service Manual