"Works great fits perfectly and I'm very happy with the product"
Rainsoft 21179 Compatible RO Filter Kit with Membrane
Q&As
Rainsoft 21179 Compatible RO Filter Kit with Membrane
Q&As
Part Number:
YSM-RS21179
Make filter changes simple with this complete Rainsoft 21179 RO replacement kit—everything you need in one box
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Subscription Details
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IN STOCK
Description
1-Year Filter Replacement Kit with RO Membrane for RainSoft 21179 Reverse Osmosis System
INCLUDES:
- STAGE 1 - 1x Carbon Block Pre Filter (OMB934-5M) - Replace Every 12 Months
- STAGE 2 - 1x RO Membrane TFC 50 GPD (TFC-RS9-50) - Replace every 24 months
- STAGE 3 - 1x Carbon Block Post Filter (OMB934-1M) - Replace Every 12 Months
Note these filters are high-quality replacement filters for the Rainsoft 21179 RO system and not genuine Rainsoft parts.
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.
We offer two replacement filter kits so you can get exactly what you need — and avoid paying for filters you don’t.
-
Year 1 Kit (shown here):
Ideal for your first full replacement, this kit includes all filters plus the RO membrane, which typically lasts up to 24 months. -
Year 2 Kit (Without RO Membrane):
After the first year, you only need to replace the pre- and post-filters, since the RO membrane is still good for another year. This kit helps you save money while keeping your system performing like new.
*Filters may need to be replaced more often than indicated, depending on water contaminant levels and volume of water being treated.
This Item Fits These Select Systems
Replacements & Add Ons
Replacements for This Item
View All System Parts
Stage 1
Omnipure OMB934-5m Carbon Block Filter 5 Micron 2.5" x 10"
Replace Every 12 Months
See Details
Stage 3
Omnipure OMB934-1m Carbon Block Filter 1 Micron 2.5" x 10"
Replace Every 12 Months
See Details
Add Ons for This Item
Overall rating: 4.7297297 / 5 from 37 reviews.
AI Generated Review Summary
The Rainsoft 21179 Compatible RO Filter Kit offers competitive pricing, fast shipping, and high-quality filters. Customers appreciate the quick order turnaround and cost-effectiveness of the replacement filters.
Summary topics
- Price (21%): Many customers loved the competitive pricing and quick order turnaround of the filters, as well as the quick shipping.
- Shipping (21%): Based on a significant number of customers, the shipping for this product is fast and efficient.
- Filter Quality (21%): A significant number of customers appreciated the top quality filters and their quick order turnaround for less cost.
Review topics: [fit, price, shipping, tasting, order, service, filters, issues, replacement].
Review highlights
- "Top quality filters, great pricing and quick order turnaround!" —
- "Prices are competitive and delivery was speedy." —
- "these filters replaced RainSoft filters very nicely with less cost" —
Reviews
"Works great fits perfectly and I'm very happy with the product"
Wrong parts
"Doesn’t fit the membrane or filters rainsoft ultrefiner II"
Best Filters out there
"Best Filters out there"
Directions
"It works fine but needs better directions or numbers on the product for order to place in filter chamber."
Rainsoft 21179 Compatible RO Filter Kit with Membrane
"I've used this kit for years and will continue use this kit."
Rainsoft replacement RO Filters
"I use to buy on Amazon, but prefer knowing where I am buying from. They fit and are working."
Wrong parts
"The filters and the membrane for reverse osmosis we're totally not compatible with my RainSoft reverse osmosis system."
RO filters
"These arrived promptly and are a much better price than buying through my plumber!"
It was great you had
"It was great you had the Rain soft filter number next to your filter number so I knew I had the correct filter and the shipping was fast."
used as replacements
"these filters replaced RainSoft filters very nicely with less cost"
Q&A
Q:
What is included in the RainSoft 21179 compatible kit YSM-RS21179?
A:
It includes OMB934-5M carbon prefilter, TFC-RS9-50 50 GPD membrane, and OMB934-1M carbon post-filter.
Q:
Which RO system does this replacement kit fit?
A:
The kit is intended for the RainSoft 21179 system. It does not fit the later proprietary Ultrefiner II; many RainSoft systems from 2013 or newer are Ultrefiner II models.
Q:
Does this kit include the RO membrane?
A:
Yes. It includes a 50 GPD membrane. These are high-quality compatible replacements and are not represented as genuine RainSoft parts.
Q:
How often should the filters in this kit be replaced?
A:
Prefilters and post-filters are typically replaced every 6 to 12 months. RO membranes commonly last about 24 months, although incoming water quality and usage can shorten either interval.
Q:
What should I check before ordering this RO filter kit?
A:
Match the system model, individual filter part numbers, membrane capacity, and connection style. Do not rely only on the number of filtration stages because systems with the same stage count can use different components.
Q:
What should I do after replacing the filters?
A:
Inspect and lubricate reusable O-rings with a light coating of food-grade silicone, reassemble the housings or twist-in cartridges, restore water slowly, check for leaks, and flush according to the system instructions.
