REPLACEMENT FILTERS AND MEMBRANE

You don't have to go back to the manufacturer of your system in order to purchase replacement filters and membranes. We offer top-notch replacement parts.  Why are our parts better?  Please click here

On most reverse osmosis systems and water filter units, the parts are interchangeable.  Most systems have three, four, or five stages:

      A three stage system normally starts with a sediment filter, then a carbon filter, and the R.O. membrane. (However, some systems just use a sediment filter, a CTA membrane, and a post-filter.)
      A four stage system normally starts with a sediment filter, then a carbon filter, the R.O. membrane, and a post-filter.
      A five stage system normally starts with a sediment filter, then two carbon filters, the R.O. membrane, and a post-filter.

*For a list of several R.O. system manufacturers we offer replacement filters and membranes for, please click here*.


The standard sizes for the sediment and carbon pre-filters are 2.5" in diameter and 9.75" long.  They have a cylindrical hole in the middle running from one end to the other:

               


On most systems, the post-filter comes encapsulated in its own housing and looks like this:


so it is not necessary to exactly match your current filter. We can send you a good substitute. However, if your post-filter is the same size as your carbon pre-filter, let us know and we can give you a substitute. 

With regard to membranes,
      - if you are not on chlorinated water, you can use a TFC membrane;
      - if you are on chlorinated water, you must have a good carbon pre-filter (which removes chlorine) in order to use a TFC membrane. Otherwise, you must use a CTA membrane (or add a carbon pre-filter).

The standard size for a TFC membrane is 1.75" in diameter and 11.75" long.  Here are a photo and a diagram of the FilmTec TFC membrane:





When ordering replacement filters, it is helpful to us if you let us know how many stages your system has. Here is our price list.





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