Compare Prices iSpring 400 GPD Light Commercial Tankless Reverse Osmosis RO Water Filter-Compare to GE® Merlin

iSpring 400 GPD Light Commercial Tankless Reverse Osmosis RO Water Filter-Compare to GE® MerlinBuy iSpring 400 GPD Light Commercial Tankless Reverse Osmosis RO Water Filter-Compare to GE® Merlin

iSpring 400 GPD Light Commercial Tankless Reverse Osmosis RO Water Filter-Compare to GE® Merlin Product Description:



  • 5 times as fast flow as the standard 50 GPD system
  • 2 of low pressure and large flow 200 GPD Reverse Osmosis Membranes included
  • Booster pump for high efficiency of RO production, great for places where low water pressure is a concern;
  • Save about 40% of water with 2:1 Flow restrictor (flow limit) as compared to 3:1 in traditional systems
  • Built-in free standing frame, Compare to GE Merlin ® tankless RO #1255052

Product Description

Compare to GE Merlin ® tankless RO #1255052

Notes: 1) NOT FOR WHOLE-HOUSE USE; Clean water pressure is about 10PSI at the faucet; 2) Low or high temperature will reduce the water output. Optimal temperature is 78 F degree. The actual output could vary from 70% to 90% of the 400GPD due to temperature, water chemical properties, and other factors.

Product Highlights


- New Technology, tankless system avoids the potential pollution from long-time water storage


- No need to install a separate pre-filter system like GE Merlin 700 GPD. This is a complete 5-stage filtration system, with 3 pre filters, 2 membranes, and 1 post filter.


- Perfect for light commercial use when you have low water pressure (i.e. below 40 psi), increasing the efficiency AND production of reverse osmosis system by increasing the source water pressure up to 100 PSI before water goes into membrane.


- Complete system ready to be installed. Package includes all filters, booster pump, faucet, tubing, fittings, drain saddle, water supply connector, and installation manual


- Perfect for Aquarium use, restaurant, office, window cleaning, car wash, green house, and coffee shops

Direct-flow RO system brings the freshest water to you

1st Stage: 5 micron high-capacity polypropylene sediment filter

2nd Stage: GAC Carbon Filter

3rd Stage: CTO Carbon Filter

4th Stage: High Rejection 400GPD TFC reverse osmosis membrane

5th Stage: Total Polishing Inline Carbon 10"

All filters are standard 2.5"x10" size. Membrane is standard commercial 2.8"x12" size.


System Capacity: 400 gallons per day @ 77 deg F


Feed Water Source: city or well water


Feed Water pH: 3.0 -11.0


Feed Water Pressure: 30-75 psi


Feed Water Temperature: 40-100 °F (4 - 38 °C)


Max Total Dissolved Solids: 2000 ppm

Customer Reviews

Most helpful customer reviews

6 of 6 people found the following review helpful.
5Water tastes great
By Zenon Jordan
I have been using this unit for almost one year and I am very satisfied with the quality of the water it produces. Along with this unit I have also installed "iSpring Reverse Osmosis RO UV Filter Ultra Violet Sterilizer 11W" and (as a final stage) "Adjustable Remineralizer System - Jumbo Capacity" from [...]. In order to prevent the UV lamp from being constantly ON I have connected everything to "Belkin Conserve Switch Energy-Saving Surge Protector with Remote" which allows me to easily turn the water ON or OFF by just using the remote switch.Overall both the product and customer service have been excellent. They shipped the product quickly and later, when I accidentally broke the plastic wrench, they replaced it without a hassle.

4 of 4 people found the following review helpful.
5Better then expected
By Leonard B
I purchased this unit recently to supply RO water for my hydroponic system. As I only have around 40lbs of pressure iin the water lines, the built in booster pump works like a charm. I'm easily able to make the 50-60 gals/day of RO water that is required. System is built well, easily installed, and the pump runs so quiet, hardly hear it.Would highly recommend this unit, for under $800, nothing better!Have run this unit for over 6 months now, have made 1,000's of gallons of RO water. Because I use more then most, I change filters much more often. I must say this is the BEST RO unit I've used to date. The booster pump makes this a far superior unit.

2 of 2 people found the following review helpful.
5Awesome water
By josh
The water tastes really good. The filter works well and is easy to install. It is also easy to change filters. Great product, Thanks

See all 10 customer reviews...


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Buy iSpring 400 GPD Light Commercial Tankless Reverse Osmosis RO Water Filter-Compare to GE® Merlin