RainSoft Compatible Reverse Osmosis Replacement Filters

Save money with Rainsoft compatible filters. Find the replacement filters you need, by selecting your Rainsoft system below.

How much do Rainsoft water filters cost? Rainsoft propriety water filters can be very expensive. We offer a variety of high-quality (yet low-cost) alternatives for Rainsoft water filters. By installing the filters and conducting routine system maintenance yourself, you'll see substantial savings. 


NOTE: Some filters require a system "conversion kit" be installed first (such as the Rainsoft Ultrefiner II, Ultrefiner UF22, and Ultrefiner UF50 systems). A retrofit kit allows you to keep using your current Rainsoft tank and faucet, but by installing a new manifold (component that holds the filters), you're able to use less expensive Rainsoft-compatible filters going forward. Our customer support team is happy to answer any questions you might have about this process. 877-377-9876 Mon-Friday, 8 am to 5 pm CT.


Learn how to convert your Rainsoft system to be able to use non-proprietary filters.