DuPont WFRO60X Reverse Osmosis Drinking Water Filtration System

I got one of Dupont''s WFRO60X RO kits at a local home improvement store. The install was fairly strait forward since I added in a dual outlet water supply valve to feed the WFRO60X and my kitchen faucet. I also merged in a separate water supply to get cold RO water to the refrigerator.

Filter canisters replace very easily but still drip some water (still better than most). The RO drain line (with restricter) is attached behind the RO filter which makes replacing the RO filter a pain since it is difficult to get to the line disconnect. This is poor design planning just to offer a cleaner appearance for something mounted under a sink or remotely. It was 4 stars at that point.

Awhile ago I noticed slight water damage near the cabinet interior floor but no standing water. After a stake out I finally found a water drop that came from the assembly header and behind the filter canisters. There is a small drain hole in the header. I did not have time to remove all the lines to remove the header and find out what this is. I placed a paper towel to absorb the small drips before they affected the cabinet floor. It dropped to 3 stars at that point.

Recently I found a larger amount of water on the cabinet floor and a soaked paper towel. I removed the lines and took out the header assembly. That was tricky since there is a gallon of water stored under pressure, I suggest adding a valve to the top of the storage tank. This drain hole is a spill port from the auto shut-off valve. It appears that any water leaking past either of the round gaskets will drain from the valve out of this hole and end up in your cabinet. Why was this spill port not incorporated into the line to the sink drain? I dropped to 2 stars since it still works and I am still using it. But it should be 1 star at best.

I will try to get replacement auto-off gaskets and retry. To avoid future failures I plan to tap a line to that spill port and route it to the drain remote mount this in the basement like I should have in the first place. I may consider finding another brand RO filter to replace this one since I am less enthusiastic about Dupont''s design.