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Home > Water Filter Brands > Rainsoft Water Filters > 21176

Rainsoft 21176, 21179, 21191 Reverse Osmosis System Water Filters

Rainsoft 21176, Rainsoft 21179, Rainsoft 21191 Ultrefiner RO System and Reverse Osmosis Water Filters

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Product Code: 21176

Features
Replacements

Rainsoft Ultrefiner 21176, 21179, 21191 Reverse Osmosis System Replacement Water Filters:
We distribute compatible water filters for the Rainsoft 21176, 21179, 21191 Ultrefiner Reverse Osmosis System.
The Rainsoft 21176, 21179, 21191 RO Systems have three separate filtration stages.Some Rainsoft systems have an optional 4th stage inline carbon water filter.

Rainsoft 21176, 21179, 21191 Reverse Osmosis System Stages:
Stage 1: The EPM-10 10 Micron Carbon Block Water Filter is used in the first housing. The Stage 1 filter should be changed every 6-12 months. Rainsoft Part # 9757, 18557 & 17368 Compatible.
Stage 2: Select the membrane that is the same capacity as your current membrane. Choose between the TFC-RS9-22 22 gallon per day reverse osmosis membrane OR the TFC-RS9-50 50 gallon per day membrane. The Stage 2 membrane should be changed every 1-3 years.
Stage 3: The CBC-10 0.5 Micron Carbon Block water filter is the 3rd stage. The Stage 3 filter should be changed every 6-12 months. Rainsoft Part # 18773 Compatible.
Stage 4 (Optional): Some systems have the CL6ROT33-B inline filter as a 4th stage. The Stage 4 inline filter should be changed every 6-12 months. Rainsoft Part # 9798 & 17369 Compatible.

Rainsoft 21176, 21179, 21191 Reverse Osmosis System Parts & Accessories:
Order the OR-38 replacement o-rings for the three slim line reverse osmosis housing sumps.
Order the SW-1 wrench to use when unscrewing the housings.

Rainsoft 21176, 21179, 21191 Water Filter Change Intervals:
The filter change interval will vary due to your water quality and the amount of water used.

We distribute compatible filters for the Rainsoft 21176, 21179, 21191 Reverse Osmosis System.

Stage 1: EPM-10
Stage 2: TFC-RS9-22 OR TFC-RS9-50
Stage 3: CBC-10
Stage 4 (Optional): CL6ROT33-B

See the Replacements tab above for more information on each stage and the compatible filters for each stage.

These filters can be purchased below.

Replacement Filters and Parts