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
Frequently Bought Together

iSpring RCS5T 500 GPD Residential and Light Commercial Tankless Reverse Osmosis Water Filter System with 1.5:1 Pure to Drain Ratio
$649.99


The pre-equipped high powered booster pump maximizes RO production by increasing water pressure going into the membrane.

The 500 GPD membrane offering an exceptional 1.5:1 drain ratio.

The RCS5T produces RO water on demand, eliminating the need for a water storage tank.

Overview
The RCS5T is engineered to meet the needs of light commercial and high demand environments, making it the optimal choice for small restaurants and small businesses. It produces reverse osmosis water at up to 500 gallons per day, a pace that allows it to function as a tankless system without affecting functionality or convenience. The centerpiece of the system a RO membrane and is fueled by a high powered booster pump. Higher water pressure to the membrane results in faster RO production and less drain water being rejected. These factors culminate in the RCS5T achieving an exceptional 1.5:1 pure to drain water ratio. The RCS5T can be used with water pressure sources as low as 40 psi, and has a built in pressure gauge to provide an accurate pressure reading. A power source is required for the booster pump, and a holding tank can be added to the system for high usage situations.
Common Uses

The RCS5T's ability to thrive without a tank make it a great space conservation option which also meets the daily demand of most households. Add a smallest pressurized tank to increase the flow without wasting cabinet space.

A healthy office is a happy office. Keep your employees well hydrated with all the RO water they can drink. Adding a small pressurized tank ensures a continuous and stable supply of pure water without delay.
(Good for small offices with under 20 people).

Food or drink that is prepared with unpurified water may have a distinct, unpleasant taste. A reverse osmosis system ensures that the water used to boil pasta, make coffee, or quench the thirst of your customers tastes clean and fresh. Pair the system with a medium sized pressurized tank for a steady supply of pure water to keep up with the demands of high water consumption.
(Good for small sized restaurants with under 20 seats).
- Removes dissolved solids, chemicals and heavy metals
- Production(GPD)
- Up to 500 Gal.
- Up to 600 Gal.
- Up to 1000 Gal.
- Up to 500 Gal.
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- Filtered Water to Waste Water Ratio
- 1.5:1
- 1:1.5
- 1:1.5
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- Fits Countertop
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- Pressure Gauge
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- Booster Pump
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- Tankless
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Product Summary
The iSpring RCS5T is a tankless reverse osmosis filtration system. The RCS5T's RO membrane produces RO water at a rate of 500 gallons per day while delivering 1.5: 1 pure to drain water ratio.The system removes chlorine, hardness, heavy metals, toxins, and a long list of other water impurities. For large families or light commercial use in small restaurants, offices, coffee Shops, or any small business.
Note: All flow rates stated on our reverse osmosis systems and membranes are assuming a water temperature of 77°F. Water temperature changes will affect the flow rate. For every degree F the temperature lowers, about 3% of product flow is lost. For every degree F the temperature increases, about 3% product flow rate is gained. This occurs because water with a higher temperature has a lower viscosity and higher diffusion rate, which makes it easier for the water to permeate the RO membrane. Lower feed water temperatures during the winter season will result in a decrease in flow rate.
- Availability: In Stock
- Model: RCS5T
- Manufacturer: iSpring
- Product Dimensions: 14.00"L x 11.00"W x 18.00"H
- Product Weight: 20.50 LB
Reviews with images



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2020-05-21
It comes very well packaged, along with a clear documented manual. Plumber installed and been working flawlessly for 5 months now.


2020-04-28
After this bad boy, 12PPM. The water tastes great, and I am saving a ton of money not buying bottled water or paying for delivery service.

2020-04-16
It has more than exceeded our expectations. If I could rate this at 6 stars I would.

2023-07-19
For about 10 years, our lab was running an old CR500 system for our analyzer. The membrane was becoming harder and more expensive to find. The wonderful people at iSpring replaced the unit for us to a RCS5T, which uses the upgraded, and less expensive, membrane. The unit was a breeze to replace. in just a few minutes, we had the new unit mounted, flushed and supplying pure DI water to our analyzer. Thank you 123filter.com!!!



2022-12-02
I am stopping to write this review since i did have to call customer support the other day and have to say that Michelle was very helpful. The first time I called was to get a kit part number for the filters. We got that sorted out then I was a cheap o and ordered from overstock. Once I got my filters and was installing i got to the RO membrane and learned I have an older model that uses a different one than what comes in the kit. Michelle was there to help again. We got the proper membrane on its way and soon i will be running at full strength again.
We use this in our Coffee Shop to help elevate the quality of our products and to extend the service life of our equipment.
I really appreciated the quality customer service and will conduct my business directly in the future for sure.
Thanks!
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RCS5T Manual