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
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
Julie Hill Parker | 
2021-03-04
This RO filtration system works very well in a very small space. If your under-counter cabinet space is minimal, this is a good unit to consider. I have owned since 2019, and the company has been very helpful in replacement of the filters when they were expired. Also, general information about how the system works has been patiently shared when I requested help. I would say the follow-up customer service is exceptional.

2021-03-04
This RO filtration system works very well in a very small space. If your under-counter cabinet space is minimal, this is a good unit to consider. I have owned since 2019, and the company has been very helpful in replacement of the filters when they were expired. Also, general information about how the system works has been patiently shared when I requested help. I would say the follow-up customer service is exceptional.
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ROG400 Manual