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.

LOW PRICES and FAST SHIPPING ONLINE SINCE 1999 !

99.5% Of All Items In Stock For Same Day Shipping!

Water Factory TCR Upgrade Post Filter CUNO 47-211212

Water Factory TCR Upgrade Post Filter CUNO 47-211212

TCR Upgrade

CUNO Water Factory Water Factory 47-211212 TCR Upgrade For Series 4000 and Series 5000 RO Reverse Osmosis Systems.  Do It Yourself Add-on. 

CUNO Water Factory Water Factory TCR Upgrade for Series 4000 and 5000.  ORDER THE FOLLOWING REPLACEMENT WATER FILTER FOR YOUR Water Factory Water Factory TCR Upgrade.  Order a pair of clips the first time you add the TCR to your series 4000 or 5000 Water Factory Systems,  Repeat replacements will not require additional clips.

Water Factory Replacement Water Filters

Easy TDS Membrane Performance Calculator
See If It is Time To Replace Your Membrane

Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS Rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.

See our selection of TDS meters under Water Tests




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.





3M Authorized Water Filtration Dealer for Water Factory and Aqua-Pure Water Filters and Reverse Osmosis Systems

We have been an Authorized Water Factory Systems dealer since 1989. 

In 1999 we became an authorized online distributor.
We know Water Factory!



* WATER FACTORY ® IS THE REGISTERED TRADEMARK OF 3M FILTRATION, THE MANUFACTURER OF WATER FACTORY ® BRAND WATER TREATMENT EQUIPMENT. THE REPLACEMENT FILTERS AND MEMBRANES LISTED ABOVE ARE MANUFACTURED BY 3M WATER FACTORY AS SO NOTED. WATER FACTORY REVERSE OSMOSIS DRINKING WATER SYSTEMS WERE ALSO MANUFACTURED AND SOLD UNDER THE CUNO BRAND NAME. WE ALSO OFFER COMPATIBLE REPLACEMENT SEDIMENT WATER FILTERS, REPLACEMENT CARBON BLOCK WATER FILTERS, GAC CARBON FILTERS, INLINE POST FILTERS, RO REVERSE OSMOSIS MEMBRANES, PRE FILTERS, FAUCETS, WATER TANKS, VALVES, PUMPS, UV ULTRAVIOLET AND WATER TESTING SUPPLIES FROM VARIOUS OTHER MANUFACTURERS FOR DISCONTINUED CUNO WATER FACTORY DRINKING WATER SYSTEMS.