Rainsoft Ultrefiner UF22 Three Stage RO System
Reverse Osmosis Systems
Rainsoft Ultrefiner UF22 3-Stage RO Compatible Replacement Filters
If your Rainsoft Ultrefiner UF22 RO System is due for filter replacements, we carry high quality generic filters and filter replacement bundles for this system. The Rainsoft Ultrefiner UF22 RO system was used prior to 2013 and allowed for generic replacement filters. The Ultrefiner UF22 features 3 stages with a 5 micron carbon block pre-filter, a 22 GPD TFC membrane, and another 5 micron carbon block as a post filter. This 3-stage RO system uses a carbon block pre-filter to reduce sediment, chlorine, and chlorine by-products before the membrane filters out impurities larger than .001 microns. The carbon block post filter treats for taste and odor.
Note: If your Rainsoft reverse osmosis system is from 2013 or newer, it most likely is the Ultrefiner II. The Ultrefiner II requires proprietary filters that must be purchased from a Rainsoft dealer. Conversion kits to generic non-OEM replacement filters are available.
Replacement Filter Info
Carbon Block Filter (OMB934-5M - Rainsoft Part#: 18557 or 9557) – Replace every 6-12 months or as needed
RO Membrane TFC 22 GPD (TFC-RS9-22 - Rainsoft Part#: 12448, 9568, 13018, 9596, 17374, 21176, or M-T1810R24) – Replace every 24 months or as needed
Carbon Block Filter (OMB934-5M - Rainsoft Part#: 18557 or 9557) – Replace every 6-12 months or as needed
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.
Filter Replacement Schedule
We’ve taken the guesswork out of replacing your filters. Begin a filter replacement cycle by replacing all filters on your system (Filter Kit "YSM"). The following year, or sooner if recommended by the manufacturer, replace all filters except the RO membrane (Filter Kit "YS"). Repeat this cycle by following the helpful diagram below.