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Showing 1-10 of 84 reviews(Verified Purchases). See all 87 reviews
on January 24, 2012
The other review I see for this product indicates that they had purchased the wrong membrane. As long as you verify that this is the right membrane for your system it works as expected. I purchased from H2oFilters and their service was exceptional. While it is true that sellers cannot generally except returns for an opened membrane (membrane is no longer reusable once opened), H2oFilters worked with me on the issue that I had and everything is working perfectly. Back to great tasting water without the hassle of purchasing it at the store!

While the following is not necessary for most buyers, if you do have issues with the Watts RO system in general here are some troubleshooting tips:
*Verify you have a 50 gallon per day flow restrictor (for this membrane)
*Empty your storage tank and verify the tank is not heavy when empty (indicative of a busted tank bladder
*Verify air pressure of empty tank meets manufacterer's recommended PSI (mine is about 7-8PSI)
*Verify your auto shut off manifold is functional (if you hear loud noises from the RO system, or it continuously runs, you might need a new one)
*Verify you have a double check valve in place (anti-siphon valve)

Once again, most buyers will not need the troubleshooting tips, as normally it's just as simple as emptying the water from the system (just like for normal maintenance) then opening the membrane housing and switching the membrane.

Thanks again H2oFilters!
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on January 23, 2016
Replaced membrane and all 4 other filters on the RO system. I sanitized the system with bleach after removing the filters since bacteria can grow inside the tubing and tank. I upgraded from the 25 gpd membrane to the 50 gpd unit and now my RO system performs better than it did new. I had no trouble getting a perfect seal the first time with no leaks. Unfortunately there are no drains at the low point of the system that would allow careful draining of the system before removing filters and the membrane. You will need a few towels to absorb excess when removing filters and the membrane regardless of how careful you are. There is always residual water in the lines that escapes. The membrane has openings on both ends so water goes everywhere with water emitting from one end of the membrane unit and some from the membrane housing.
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on July 29, 2017
Didn’t last 10 months. Tap water has lower TDS. Tap is 36 and RO is 46. I have very clean tap water on Long Island. My filters at .5 micron 5 stage RO system. I filter approx. 15 gal. A week.
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on June 24, 2017
fits and works perfect bumps the RO rate way up, just make sure you get different hose adaptor as documented
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on August 16, 2015
The membrane needs replacement very seldom, but being able to do so makes the Watts R/O system a lifetime product. I replace the filter cartridges every nine months. If the taste is not completely restored to neutral, I replace the membrane. With periodic replacement of the filters, the membrane should last ten years.
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on March 7, 2017
It was,easy to install and I expect it will work as long as the lat one (over 10 years).
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on August 20, 2017
Have purchased this item multiple times already.
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on October 14, 2016
Exact replacement for my RO system. Installs easy and works as claimed
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on August 18, 2017
Works great
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on July 22, 2017
Perfect fit, working great.
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