Replacement Filter Sets & Kits

Complete multi-stage replacement sets — everything your system needs for a full service in one order.

RO filter replacement kit compatible with Hydrotech 4VTFC50G and 4VTFC50G-PB models

Compatible with Hydrotech 4VTFC50G or 4VTFC50G-PB RO Filter Replacement Kit

Replaces 4VTFC50G In stock
from $29.99

Hydrotech 4VTFC50G or 4VTFC50G-PB RO Filter Replacement KitHydrotech 4VTFC50G or 4VTFC50G-PB RO Filter Replacement Kit1-Year Filter Replacement Bun...

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from $29.99
CFS RO Filter Kit with 50 GPD Membrane – Fits PW-RO4L, TGI-525, ROES-50

CFS RO Filter Kit with 50 GPD Membrane – Fits PW-RO4L, TGI-525, ROES-50

Replaces PW-RO4L In stock
$69.99

Four piece RO kit from CFS with a 50 GPD membrane — the full annual service in one box: one sediment filter, one carbon block, one 50 GPD reverse o...

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$69.99
CFS RO Filter Kit – 50 GPD Membrane – Fits Proline Plus, PuroMax PC4

CFS RO Filter Kit – 50 GPD Membrane – Fits Proline Plus, PuroMax PC4

Replaces Proline Plus In stock
from $24.99

CFS reverse osmosis service parts for standard under-sink systems, including Proline Plus and PuroMax PC4 class four and five stage units. The 50 G...

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from $24.99
CFS Universal 4-Stage Under Sink RO Replacement Filter Kit

CFS Universal 4-Stage Under Sink RO Replacement Filter Kit

In stock
$37.92

Restore your under sink reverse osmosis system to day-one performance in one simple change. After 6–12 months sediment loads up and carbon exhausts...

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$37.92