Rainsoft Ultrefiner UF50 3-Stage RO Compatible Replacement Filters

If your Rainsoft Ultrefiner UF50 RO System is due for filter replacements and your system was manufactured prior to 2013, we offer high-quality compatible filters for this system. The compatible filter kits can be found below.

For UF50 reverse osmosis drinking water systems made after 2013, it's likely the Ultrefiner II model, which uses expensive proprietary filters that offer limited advantages compared to compatible filters.

Alternative Option to Proprietary Filters: To reduce costs, save water, and produce purified water faster, consider converting your Rainsoft system to the PuROTwist Retrofit Kit (PT4000T75-RK). Going forward, this conversion kit allows you to use PuROTwist filters with your existing Rainsoft faucet, tank, and tubing. Start saving on replacement filters today!