Waterdrop WD-D6RF Filter Replacement for WD-D6-B Tankless Reverse Osmosis System 1-Year Lifetime Reduce PFAS

Easy to install. Great system overall. Great performance. Read more

Gets my tap water TDS to 2 ppm. Extraordinary results. Replacement is extremely easy. Definitely a buy. Read more

Direct Replacement, easy Installation, priced well. Instructions for removal of the old filter and installing the new filter were clear and easy to understand. No leakage after install, and filters just as well as the original. Read more

Very easy to replace! I love this RO system and am very happy with how it’s performed over the last three years! I change the filter once a year - it’s fast, easy, and keeps our water filtered and tasting great. No leak issues, minimal noise. Read more

So easy to replace Read more

Edits - December 26, 2024 Upgrading my review to 4-stars (from 3-stars) Reason 1 - The TDS output has improved with use, it will now get into the low 20's. I'm hoping that trend will continue. Even if not, low 20's is fine for our use Reason 2 - Waterdrop support is great to work with. They reached out to me and will send me a replacement filter to test/use. In addition they offered to send an additional filter that will eliminate TDS-Creep. After stopping the flow of water, the TDS values will creep up. I typically need to run our unit for 45-seconds before I see the lowest TDS values (incoming water is around 600, TDS creep ends up in the 150 range before dropping to my target range). However installing this extra filter would double my operating costs, replacing it once every 3 months, and replacing the main filter every 12 months. I declined their kind offer. ++++++++++++++++++++++++ Overall the replacement process was a success; however, I wish the documentation was better and included more information. Most importantly, the old filter will leak water when you remove it. Fine a few ounces that were easy to deal with. Well, not exactly. Sadly that was only the first leak of water, it dumped a couple of cups worth after I reboxed it and was in the process carrying it outside. My advice is to put the old filter into a container (bucket) or into a plastic bag as soon as you have it out of the RO machine. Another tip is to put a small amount of plumber's grease on all of those connectors. I'm pretty sure doing so allowed me to close the lever with one hand (where the instructions warn you that you might need both hands). This was extra helpful because the unit is tucked away in the cabinet under our sink. I also think the instructions could be better thought out about when to take each step. For example, I don't see the logic behind suggesting you turn the unit back on before turning on the water supply. Operating 'dry' cannot be good for the pump. Finally, the other reason for a 3-star review - After flushing the TDS measure was in the 40's. This is disappointing because the old filter was easily getting TDS to under 20 and I sometimes saw single digits in the days leading up to this swap. And a bonus note in case you're still shopping for a tankless RO system. The GPD figure is representative of how fast the built-in pump moves water through the system. So a bigger GPD number means you'll be able to fill glasses, pots, etc faster than a unit with a lower number. If I knew that in advance, I would have likely picked another model. Read more

It’s supposed to last a year but my water is so bad it only lasts 6 months Read more

Such a simple replacement process. Can't ask for anything more! Read more