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Reverse Osmosis Systems

Rainsoft RO Replacement Filters

Rainsoft reverse osmosis compatible replacement filters and manuals

Find high-quality filters, membranes and parts compatible with your Rainsoft reverse osmosis drinking water system. RainSoft reverse osmosis filter systems employ a multi-stage filtration process, effectively removing a wide range of contaminants, including sediment, chlorine, heavy metals, and dissolved solids. RainSoft's under-sink RO systems are designed for residential applications, providing clean, great-tasting water straight from the tap. With a commitment to quality and innovation, RainSoft ensures that their reverse osmosis systems deliver outstanding performance and reliability.

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Rainsoft RO Frequently Asked Questions

Do Rainsoft compatible filters work directly in my Rainsoft system?

Some filters will require a system "conversion kit" be installed first (such as for the Rainsoft Ultrefiner II, Ultrefiner UF22, and Ultrefiner UF50 systems). A retrofit kit pays for itself pretty quickly as it 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 in the future. Our customer support team is happy to answer any questions you might have about this process. 877-377-9876 Monday - Friday, 8 am to 5 pm CT.

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

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. You may need to convert your Rainsoft system to be able to use non-proprietary filters.

Which Rainsoft filters do I need for RO drinking water system?

Select your Rainsoft model from the list above or the filter finder below. You will be taken to a new page that shows the available filters, membranes and parts for your Rainsoft RO system.

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What contaminants will a reverse osmosis systems remove?

A reverse osmosis (RO) system can remove a variety of contaminants from water. This includes common impurities like sediment, chlorine, and heavy metals such as lead, mercury, and arsenic. Additionally, RO systems reduce dissolved solids, nitrates, and sulfates, ensuring water of exceptional purity. The advanced filtration process also targets volatile organic compounds (VOCs), pesticides, and herbicides. With this comprehensive approach, RO systems provide households and businesses with an ample supply of clean, safe, and great-tasting water for a variety of applications. Learn more about how RO filtration works.

Reverse Osmosis Technical Tips

How to Change RO Filters

Learn how to replace your RO systems' filters and membrane with step-by-step instructions.
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How to Install a Reverse Osmosis System

Clear, concise instructions on how to install an under-sink reverse osmosis filtration system yourself.
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How to Connect an RO System to Fridge or Ice Maker

Tips for connecting your RO system to a refrigerator water dispenser or ice maker. Get step-by-step guidance for optimal results.
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