Identify My RO System

The most accurate way to get the right filters for your RO system is to identify the brand and model number.

• Identification information is typically found on the metal or plastic manifold that holds the filter housings in place.
• The model number may be located on the back side of the manifold on a small sticker.
• Typically labels on individual filters do NOT indicate the RO system brand or model.

If you are able to find a brand and model number click here

If there is no label on the RO system or you are unable to identify the brand and model, then identify and select the system image and description below that most closely matches your current RO system:

Choose Your RO System

3-stage RO system two vertical filters and one horizontal filter on top


4-stage RO system with two vertical filters and two horizontal filters on top


4-stage RO system with three vertical filters and one horizontal filter on top


5-stage RO system with three vertical filters and two horizontal filters on top


How to Find and Order the Correct Reverse Osmosis Water Filters

Finding the right water filter replacement for your water filtration system is not always easy, and can be down right overwhelming. We'll help you identify which replacement filters you need. And if the information below does not answer your questions, feel free to give us a call at (877) 377-9876. Our customer support team, available Monday through Friday 8 am to 5 pm Central, can talk you through figuring out what filters you need.

If you're not sure which filters you have, get started by first determining the brand of model of your RO filter system.

Order Reverse Osmosis Replacement Filters

Once you've determined the brand and model, follow the filter and membrane replacement schedule for your system to ensure your Reverse Osmosis system functions properly.

Most drinking water filters should be replaced every 6-12 months. But Reverse Osmosis membrane only needs to be replaced every 2 years. The time length can vary based on water contaminants and water usage.

To simplify the filter replacing process, we offer replacement kits that bundle everything needed for the annual filter replacement. Start by selecting your brand on this page and then follow the link to your system model to see if a replacement bundle is available.

How to Install Reverse Osmosis Filters

When the filters arrive, follow the instructions on how to change the RO filters and membrane. Note that when changing RO filters, it is strongly recommended that you sanitize and clean your RO system at the same time.

We also provide step-by-step instructions for replacing reverse osmosis filters yourself.

Going forward, here are a few simple tips to keep your RO system in top shape. For answers to common RO questions, check out our RO Troubleshooting Guide

Ready to Replace Your Reverse Osmosis System?

If your system is getting older, you may be able to convert your existing system with a Reverse Osmosis conversion kit, keeping your same tank and faucet. 

Or if you are considering an entirely new Reverse Osmosis drinking water system, here are suggestions on what to know before purchasing a reverse osmosis system that might prove helpful.

We've been in the water filtration industry for more almost 20 years and are proud to carry one of the largest online inventories of membranes, filters and replacement parts for reverse osmosis, ultraviolet and a variety of other water filtration systems.