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iSpring RCS5T 500 GPD Residential and Light Commercial Tankless Reverse Osmosis Water Filter System with 1.5:1 Pure to Drain Ratio
About this item
- Designed to supply for large families, small restaurants and small businesses
- Produces up to 500 GPD or 0.34 gpm under ideal conditions. The actual output could vary from 70% to 90% of the 500GPD due to temperature, water chemical properties, and other factors. Filtered water output is about 40-70 psi on average.
- RO membrane with 1.5:1 pure to drain ratio
- 5 stages of filtration remove up to 99% of 1, 000+ pollutants including PFAS, chlorine, fluoride, lead and more.
- Light commercial capable - add a storage tank for light commercial settings
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iSpring RCS5T 500 GPD Residential and Light Commercial Tankless Reverse Osmosis Water Filter System with 1.5:1 Pure to Drain Ratio
$682.99
RCS5T
RCT600 
CRO1000 
MS5 RO Membrane
F15-500 Replacement - Availability: In Stock
- Model: RCS5T
- Manufacturer: iSpring
Write Review
2021-02-18
I bought this unit about 4 months ago with the intention of setting up a whole house RO system and I have been very happy with the product performance. It operates quietly, and has high volume output (as compared to other RO systems) as advertised. Customer support is domestically based and very helpful. Nick, in product support was able to help me find a replacement RO membrane when Amazon was out of stock. The unit itself is fairly simple, and all of the components appear easily replaceable.
Setting up the rest of the system has been challenging though. I have very fine sand soils and very hard well water, and therefore use a sediment filter and water-softening pre-RO treatment. Even with the unit's diaphragm pump, the permeate pressure after treatment is not high enough for a whole house system. So I have the unit dispensing permeate to 84 gal and 119 gal pressure tanks operating between approx 5 and 25 psi. I also have two 12v 15amp, 5gpm RV diaphragm pumps operating between 40 and 60 psi supplying another 84 gal pressure tank. This setup provides between approx 80 and 100 gals of on demand storage. This creates the capability to take showers, run the dishwasher, and use the sinks at normal residential flows and pressures. When the high pressure tank empties, the twin diaphragm pumps are capable of refilling the 40-60 psi tank during high flow usage. Once the high pressure tank fills, the pressure drop on the low pressure side causes the unit to automatically start and refill the 5-25 psi pressure tanks until the RO unit's cutoff pressure is reached.
The limitations of my system include difficulty running the washing machine, which use large volumes of water. I will probably replumb my house to have the cold water for the washing machine running directly off the water-softened well water, as well as the toilets. Additionally, the permeate from all RO systems is acidic, so replumbing is probably necessary at some point if you have copper pipes (I am planning on replumbing with pex pipe). I also have a UV light after the RO for bacteria control. As a side note, tying into existing plumbing, if there is bacteria present in your piping, can result in contamination of the new plumbing. Therefore, you should probably shock chlorinate the entire system at the same time as installation.
My experience has been that setting up a whole house RO system is difficult and probably requires professional help unless you have a solid engineering background. The RCS5T unit itself, though, is equal to the RO treatment task in my opinion, and if I had to do things over I would still have bought it. In retrospect, I would have probably used higher voltage, lower amperage diaphragm pumps since finding adequate converters was difficult. I choose the DC diaphragm pumps because they are capable of running dry and don't require priming in the event the 5-25 psi tanks are completely drained.
Hopefully this review is helpful to those of you out there trying the same thing since I have had a difficult time finding much information on how to setup such systems. A lot of it has been trial and error, with a few dead ends and a little bit of wasted money, but I feel like I am getting to where I want to be.
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RCS5T Manual
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