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GREATWELL ROG400 Tankless Reverse Osmosis Water Filtration System with 400 GPD RO Filter 1.5:1 Pure to Drain Ratio and Drinking Water Faucet
$598.99
Triple the Savings, Triple the Joy!
About this item
- ROG400 is a tankless reverse osmosis system. The vertical filter placement design saves more than 30% of space under the sink compares to a horizontal design. A leak-free integrated water route and filter change indicator.
- The PAC filter is a combination of two sediment filters and a carbon filter that removes sand, rust, chlorine, odor, and smell. The RO membrane removes up to 99% of over 1,000 contaminants, including PFAS, lead, fluoride, arsenic, asbestos, and more for up to 3 years. The AC or the active carbon filter made from coconut shell further polishes water removing odor and bad taste.
- With a built-in water pump and GE reverse osmosis membrane rated at 400 GPD, the water flow rate from ROG400 is at 0. 3-0. 4 gal./min., with a pure to wastewater ratio (up to 1.5 : 1).
- DIY installation and future filter replacement. The unit can be connected to the ice maker/refrigerator. It includes an artisan-style stainless steel drinking water faucet.
- At GreatWell, we only use quality components tested by an independent 3rd party against NSF/ANSI standards. Lifetime technical support provided by our dedicated support team based in Atlanta, GA.
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GREATWELL Tankless Reverse Osmosis Water Filtration System with 400 GPD RO Filter 1.5:1 Pure to Drain Ratio and Drinking Water Faucet
$598.99
- Availability: In Stock
- Model: ROG400
- Manufacturer: iSpring
Write Review
SteveR | 
2020-02-24
I decided to replace my 20+ year old RO unit with a new tankless model. When researching and shopping I found only two good products out there: the ROG4000 and the Waterdrop WD-G3-W tankless system. I chose the ROG400 partly because of the lower cost and partly due to its dimensions fitting better under my sink. Installing the ROG400 took much longer than expected, somewhere in the 2+ hour range, in part because I had to remove the garbage disposal to install the faucet. Plus I chose a corner opening on the sink which required me to remove a wooden corner brace on the cabinet. Once installed the system fired up fine. I should also note the ROG400 User's Manual/Instruction is pretty lousy! Initial testing of the output showed ~40-50 ppm of hardness compared to the ~450 ppm of city water input. I did have some minor dripping at the faucet spout tip, and so contacted iSpring Customer Service to see if I could get a cut sheet or maintenance guide for the faucet. Nick at iSpring sent me a new faucet since the initial one was still under warranty but was unable to provide a maintenance guide. The new faucet is similar in style but has slightly different lines. It's also slightly easier to install due to the undercounted mounting system. Once up and running, the noise and vibration is somewhat a nuisance, even after placing the unit on a padded surface but easy to get used to. Due to the smaller tubing size-¼" vs ⅜" on the old RO unit-the output flow is about half compared to the old RO unit. But that is also easy to get used to. Nick at iSpring was very helpful and courteous through it all. Despite the negative issues listed above, overall the ROG400 unit will hopefully prove to be a good solution that only time will tell.
2020-02-24
I decided to replace my 20+ year old RO unit with a new tankless model. When researching and shopping I found only two good products out there: the ROG4000 and the Waterdrop WD-G3-W tankless system. I chose the ROG400 partly because of the lower cost and partly due to its dimensions fitting better under my sink. Installing the ROG400 took much longer than expected, somewhere in the 2+ hour range, in part because I had to remove the garbage disposal to install the faucet. Plus I chose a corner opening on the sink which required me to remove a wooden corner brace on the cabinet. Once installed the system fired up fine. I should also note the ROG400 User's Manual/Instruction is pretty lousy! Initial testing of the output showed ~40-50 ppm of hardness compared to the ~450 ppm of city water input. I did have some minor dripping at the faucet spout tip, and so contacted iSpring Customer Service to see if I could get a cut sheet or maintenance guide for the faucet. Nick at iSpring sent me a new faucet since the initial one was still under warranty but was unable to provide a maintenance guide. The new faucet is similar in style but has slightly different lines. It's also slightly easier to install due to the undercounted mounting system. Once up and running, the noise and vibration is somewhat a nuisance, even after placing the unit on a padded surface but easy to get used to. Due to the smaller tubing size-¼" vs ⅜" on the old RO unit-the output flow is about half compared to the old RO unit. But that is also easy to get used to. Nick at iSpring was very helpful and courteous through it all. Despite the negative issues listed above, overall the ROG400 unit will hopefully prove to be a good solution that only time will tell.
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