u/bozduke13

I am looking for a tankless Undersink RO system. After doing some research the waterdrop tankless systems seem to be the best and I am between the G3P600, G3P800, and X8.

Here's what I found from researching online and calling waterdrop customer support.

So if you want remineralization you can get this $33 MNR35 remineralization filter from waterdrop for the G3P600 or G3P800 but it's external from the unit so you have piping going from the unit to the remineralization filter and then to the faucet. So this means you can get remineralization with the more affordable G3P600, it's not something that is exclusive to higher end models.

On the X8 it seems like you can add the F1A remineralization filter internally. Looks like that would make it easier to replace the remineralization filter on the X8 since you can just twist and remove the old filter and slide in the new one.

Also side note I think the only difference between the X8 and X8A is the $30 F1A activated carbon + remineralization filter but they charge another $80 more for the X8A. The waterdrop support rep said you should be able to just replace the F1G (just activated carbon) filter the regular X8 comes with the F1A so just buy the regular X8 and a F1A filter for $30 and you'll get the same thing as the X8A and you'll save $50.

If you care about UV sterilization it's only available on the G3P800 or higher end X12/X16, not the G3P600 or X8.

For wastewater the G3P800 seems to do the best with the X8 and G3P600 performing slightly worse.

Flow rate between the X8 and G3P800 is the same at 800GPD versus the G3P600 being 600GPD.

For certifications all three have SF/ANSI 42 & 58 & 372 certifications but here are the reports from waterdrop if you want to dig deeper:

• G3P600
• G3P800
• X8 (X12 report, couldn't find the X8 report but X12 uses 2 of the same filters)

Also, BOS Water did their own independent testing and all three seemed to perform similarly. Also you can look at this page on waterdrop's website to see what the different standards covers.

Cost of replacement filters is about the same between the G3P800 & X8 once you add remineralization, the G3P600 is cheaper mainly due to it's cheaper RO filter:

• G3P600: RO - $110, Pre-Sediment & Carbon Block - $30, Activated Carbon - $30, Remineralization - $33
• G3P800: RO - $140, Pre-Sediment & Carbon Block - $30, Activated Carbon - $30, remineralization - $33
• X8: RO - $140, Pre-Sediment & Carbon Block - $31, Activated Carbon & Remineralization - $33

At the time of writing this the these are the price of each unit alone (no remineralization filter):

• G3P600 - $430
• G3P800 - $850
• X8 - $600

I think the G3P600 is the best value at $460 for the unit + MNR35 remineralization filter but I probably will go for the X8 at $630 for the unit + F1A filter to have the easily replaceable F1A activated carbon + remineralization filter. I don't think the G3P800 is worth it but if you want UV sterilization it's the only one besides the higher end X12/X16 that has it.

Anyone out there who has more information, such as pros/cons for each, or personal experience using these products?

Any other tankless models I should look at even from other brands?

I have an FX6 and a Pyxis and need more batteries.

I wondering if any of these third party batteries are reliable long term.

Core U98X: https://coreswx.com/products/bpu-style-battery

Hawk Woods BP98x: https://www.hawkwoods.co.uk/Cine/P/BP-98X

Swit SU90c: https://www.switusa.com/product-page/lb-su90c-sony-bp-u-series-battery

Sony OEM BPU: https://www.bhphotovideo.com/c/product/1558753-REG/sony_bp_u100_bp_100_lithium_ion_battery_pack.html

A lot of them can charge over USB-C which is cool but I want to make sure that there isn't a downside to doing so versus with the larger chargers.

Anyone tried all of some of them long term and noticed any pros and cons between the them?

I probably will also get some 98wh gold mount NanoX batteries from Core SWX but I'd still like some smaller Sony BPU style batteries.