Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.


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Farris Enterprises Replacement Water Filters ®

Farris Enterprises ® compatible replacement water filters, RO reverse osmosis membranes, DIY Service Parts and HELP Guides

Farris ROS3 Reverse Osmosis System

Farris ROS4 Reverse Osmosis System

Farris ROS4-3 Reverse Osmosis System

Farris ROS5 Reverse Osmosis System

Farris ROSL-2312 Filter System

Farris ROSL-3312 Filter System

Farris ROSL-4312 Filter System

Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.

* Farris is the registered trademark of Farris, the manufacturer of Farris brand of under counter drinking water system filtration equipment. The replacement water filter cartridges, reverse osmosis membranes, water tanks, faucets and repair parts listed above are not manufactured or endorsed by Farris. Rather, these replacement filters, RO reverse osmosis membranes and DIY replacement parts are manufactured by other companies. While these replacement water filters, repair parts and reverse osmosis membranes are compatible for use in Farris under counter reverse osmosis water filtration equipment, we make no representation as to whether using these water filter cartridges and RO reverse osmosis membranes is consistent with the warranty and specifications applicable to Farris under sink drinking water system equipment.