iSpring CRO2000 4-Stage Tankless Commercial Reverse Osmosis Drinking Water Filtration System w/ Pumps, Pressure Gauges, and Freestanding Stainless Steel Bracket, for Restaurants and Small Businesses

After a lot of research, I decided on the iSpring RCS5T, and it has exceeded my expectations. The biggest reason I chose this unit was its commercial-grade performance without needing a large storage tank. Having up to 500 GPD available on demand is a huge advantage, especially for a busy household or small business.Installation was straightforward if you’re comfortable with basic plumbing. The instructions were clear, and I really appreciated the built-in pressure gauge—it made setup and troubleshooting much easier. The booster pump is surprisingly quiet, and the entire system feels extremely well built.The water quality has been outstanding. The taste is crisp, clean, and noticeably better than bottled water we’ve purchased in the past. Coffee, ice, and cooking all benefit from the improved water quality. It’s also reassuring knowing the system is designed to reduce a wide range of contaminants while maintaining an efficient pure-to-drain ratio compared to many older RO systems.Another thing that impressed me is the flow rate. Unlike many residential RO systems that slow to a trickle while waiting on a storage tank, this system keeps up with demand remarkably well.Pros:Excellent tasting waterHigh 500 GPD production capacityEfficient 1.5:1 pure-to-drain ratioCompact tankless designQuiet booster pumpBuilt-in pressure gaugeSolid construction and quality components.Overall, if you’re looking for a serious reverse osmosis system that can handle high demand without constantly waiting on a storage tank, I wouldn’t hesitate to recommend the iSpring RCS5T. It has been one of the best upgrades we’ve made to our home’s water system.

After a lot of research, I decided on the iSpring RCS5T, and it has exceeded my expectations. The biggest reason I chose this unit was its commercial-grade performance without needing a large storage tank. Having up to 500 GPD available on demand is a huge advantage, especially for a busy household or small business.Installation was straightforward if you’re comfortable with basic plumbing. The instructions were clear, and I really appreciated the built-in pressure gauge—it made setup and troubleshooting much easier. The booster pump is surprisingly quiet, and the entire system feels extremely well built.The water quality has been outstanding. The taste is crisp, clean, and noticeably better than bottled water we’ve purchased in the past. Coffee, ice, and cooking all benefit from the improved water quality. It’s also reassuring knowing the system is designed to reduce a wide range of contaminants while maintaining an efficient pure-to-drain ratio compared to many older RO systems.Another thing that impressed me is the flow rate. Unlike many residential RO systems that slow to a trickle while waiting on a storage tank, this system keeps up with demand remarkably well.Pros:Excellent tasting waterHigh 500 GPD production capacityEfficient 1.5:1 pure-to-drain ratioCompact tankless designQuiet booster pumpBuilt-in pressure gaugeSolid construction and quality components.Overall, if you’re looking for a serious reverse osmosis system that can handle high demand without constantly waiting on a storage tank, I wouldn’t hesitate to recommend the iSpring RCS5T. It has been one of the best upgrades we’ve made to our home’s water system.

The machine-head unit arrived in a sealed bag filled with water causing internal corrosion and detached pumps. Despite clear evidence of factory negligence customer support is trying to shift the blame to the carrier and forwarder. It looks used to me too just as the customer support said after seeing the photos.

We purchased the iSpring RCB3P Reverse Osmosis RO Water Filtration System, 300 GPD system in 2017. Initially there were damaged parts from shipping but the parts were promptly replaced (Nick from customer service is awesome). Our water was high in sodium and this system reduced the TDS from 450 to under 30. Prior to this system I was buying filtered water in 3 and 5 gallon bottles which was running me over $300 a year so this system has paid for itself multiple times. The system has worked flawlessly since 2017. We couldn't be happier with this unit.The frame of the unit is quite hefty and the motor, pressure gauge, and other electronic items appear to be installed well. I will update my review after I am able to test the unit.This unit cost over $500.00 so the initial issues are very disappointing especially since I have no idea how long it will take to get the broken part.1/16/18 UpdateI sent iSpring an email via their Contact Us option from their website late at night after posting the above review.. I received an email from one of their representatives (James) the following day. He has been working with me to resolve the broken Inline Carbon Filter connections. He first had to verify my purchase. He is in the process of shipping me the replacement part now. So at this point iSpring customer service has been very responsive implying that they are concerned about the quality of their products and customer satisfaction. I will provide more feedback once I am able to test the unit.1/21/18I received the replacement Inline Carbon Filter on Friday 1/19/18. I was disappointed in that the replacement filter was a 1500 gal rated filter and the original filter was a 3000 gal rated filter.I'm upgrading this to 4 stars, if I hadn't had to deal with the connector issues and if I had known that I needed to do all the reducing and expanding of tube connections I would have given this a 5 star. The following information may help prevent some frustration.I believe that ISpring has some quality control issues since the iSpring RCB3P GPD Commercial Grade Reverse Osmosis Water Filter System w/Booster Pump and Oversized Pre RO Filters unit was damaged upon arrival and the iSpring 20 gal storage tank I purchased was also damaged upon arrival. The damage did not alter the functionality of the units they just caused some frustrations.During the test phase of the RO system I found another connector that had been broken during shipping. I didn't find the second broken connector until about 8:30 PM when I opened the water valve to the RO unit. Very inconvienent running to a parts store when they are all closing.I'm not sure why but the design of this RO unit (RCB3P) has an input of 3/8" OD tubing but the tube size is reduced to 1/4" OD tubing through the membrane cartridges and carbon filter. The output lines to the faucet and storage tank is 1/4" OD. The input to the iSpring 20 gal storage tank is 3/8" OD. I wasn't able to find connectors that reduce from 3/8" OD to 1/4" OD and visa versa so I had to spend a lot of time at hardware stores to find parts to do the trick. This is very frustrating and inconvenient for the customer.I will say that once all the issues were fixed the unit appears to be working well. My TDS reading before the unit was 435 and the TDS reading from the RO faucet is 26. I did run the unit for some time before taking the RO TDS reading since I wanted to flush out all the lines. In addition, the storage tank recommends that the tank be flushed after the first filling. Be sure to run the faucet and tank lines into a bucket or drain before connecting them to the house RO line and tank, this flushes out the lines all the carbon from the carbon filter.On the positive side: I installed a sharkbite pressure guage and a sharkbite shutoff valve just before the reduction from my house 1/2" copper line to the 3/8" OD tubing line. My pressure is slightly over 50 psi going into the unit. Our water pressure from an outside faucet typically fills at 5-6 gal per minute. The RO unit produced about a gal of RO water a minute with about a gal of waste water (to get this information I placed the drain hose in a 5 gal bucket and the RO faucet hose in another 5 gal bucket and timed the test). I'm not sure how this unit works without the booster pump but I highly recommend getting the unit with the pump since all the wiring and other electronics are already installed. Don't be alarmed if the pump appears to run for a long time. Once I started filling the tank It took about two hours for the tank to fill and the unit to pressurize enough to turn off the pump (the gauge on the RO unit read about 1 when the unit turned off). When the unit turns off the water coming out of the waste water line will also stop.Our RO water has no smell or taste so I'm not sure why some of the other reviews had those complaints, maybe they didn't flush the lines and tank and some of the flux or other plumbing chemicals got in...

We purchased the iSpring RCB3P Reverse Osmosis RO Water Filtration System, 300 GPD system in 2017. Initially there were damaged parts from shipping but the parts were promptly replaced (Nick from customer service is awesome). Our water was high in sodium and this system reduced the TDS from 450 to under 30. Prior to this system I was buying filtered water in 3 and 5 gallon bottles which was running me over $300 a year so this system has paid for itself multiple times. The system has worked flawlessly since 2017. We couldn't be happier with this unit.The frame of the unit is quite hefty and the motor, pressure gauge, and other electronic items appear to be installed well. I will update my review after I am able to test the unit.This unit cost over $500.00 so the initial issues are very disappointing especially since I have no idea how long it will take to get the broken part.1/16/18 UpdateI sent iSpring an email via their Contact Us option from their website late at night after posting the above review.. I received an email from one of their representatives (James) the following day. He has been working with me to resolve the broken Inline Carbon Filter connections. He first had to verify my purchase. He is in the process of shipping me the replacement part now. So at this point iSpring customer service has been very responsive implying that they are concerned about the quality of their products and customer satisfaction. I will provide more feedback once I am able to test the unit.1/21/18I received the replacement Inline Carbon Filter on Friday 1/19/18. I was disappointed in that the replacement filter was a 1500 gal rated filter and the original filter was a 3000 gal rated filter.I'm upgrading this to 4 stars, if I hadn't had to deal with the connector issues and if I had known that I needed to do all the reducing and expanding of tube connections I would have given this a 5 star. The following information may help prevent some frustration.I believe that ISpring has some quality control issues since the iSpring RCB3P GPD Commercial Grade Reverse Osmosis Water Filter System w/Booster Pump and Oversized Pre RO Filters unit was damaged upon arrival and the iSpring 20 gal storage tank I purchased was also damaged upon arrival. The damage did not alter the functionality of the units they just caused some frustrations.During the test phase of the RO system I found another connector that had been broken during shipping. I didn't find the second broken connector until about 8:30 PM when I opened the water valve to the RO unit. Very inconvienent running to a parts store when they are all closing.I'm not sure why but the design of this RO unit (RCB3P) has an input of 3/8" OD tubing but the tube size is reduced to 1/4" OD tubing through the membrane cartridges and carbon filter. The output lines to the faucet and storage tank is 1/4" OD. The input to the iSpring 20 gal storage tank is 3/8" OD. I wasn't able to find connectors that reduce from 3/8" OD to 1/4" OD and visa versa so I had to spend a lot of time at hardware stores to find parts to do the trick. This is very frustrating and inconvenient for the customer.I will say that once all the issues were fixed the unit appears to be working well. My TDS reading before the unit was 435 and the TDS reading from the RO faucet is 26. I did run the unit for some time before taking the RO TDS reading since I wanted to flush out all the lines. In addition, the storage tank recommends that the tank be flushed after the first filling. Be sure to run the faucet and tank lines into a bucket or drain before connecting them to the house RO line and tank, this flushes out the lines all the carbon from the carbon filter.On the positive side: I installed a sharkbite pressure guage and a sharkbite shutoff valve just before the reduction from my house 1/2" copper line to the 3/8" OD tubing line. My pressure is slightly over 50 psi going into the unit. Our water pressure from an outside faucet typically fills at 5-6 gal per minute. The RO unit produced about a gal of RO water a minute with about a gal of waste water (to get this information I placed the drain hose in a 5 gal bucket and the RO faucet hose in another 5 gal bucket and timed the test). I'm not sure how this unit works without the booster pump but I highly recommend getting the unit with the pump since all the wiring and other electronics are already installed. Don't be alarmed if the pump appears to run for a long time. Once I started filling the tank It took about two hours for the tank to fill and the unit to pressurize enough to turn off the pump (the gauge on the RO unit read about 1 when the unit turned off). When the unit turns off the water coming out of the waste water line will also stop.Our RO water has no smell or taste so I'm not sure why some of the other reviews had those complaints, maybe they didn't flush the lines and tank and some of the flux or other plumbing chemicals got in...

This unit works really well and puts out a lot of water. But be aware that hte membrane is only rated to produce 1500 gallons (plus or minus based on your water conditions--I got about 1600 the time I tried to measure it). That means that if you operate it at the full 500 gallon per day capacity, on average you'd have to replace the membrane (which costs well over $150) every 3 days. It is also a job for a bodybuilder to get the membrane unscrewed and replaced. I use it much less than that, so my membranes last like a year or more. But you should know that the cost to really run this at capacity is amazingly high. I have measured the output of some dow membranes on another unit and they last 30 to 40 thousand gallons with the same water input. They do work slower though, so that is a factor, but overall the ispring 500 gpd can be very costly to run.

This unit works really well and puts out a lot of water. But be aware that hte membrane is only rated to produce 1500 gallons (plus or minus based on your water conditions--I got about 1600 the time I tried to measure it). That means that if you operate it at the full 500 gallon per day capacity, on average you'd have to replace the membrane (which costs well over $150) every 3 days. It is also a job for a bodybuilder to get the membrane unscrewed and replaced. I use it much less than that, so my membranes last like a year or more. But you should know that the cost to really run this at capacity is amazingly high. I have measured the output of some dow membranes on another unit and they last 30 to 40 thousand gallons with the same water input. They do work slower though, so that is a factor, but overall the ispring 500 gpd can be very costly to run.

We are on a well with very stinky water. I added all kinds of filters, chlorine injector, and water softener. Water looked and smelled great. But wait... After some time our clear dishes were all becoming etched and frosted looking when washed in the dishwasher. If water dried on our dark cars it would make light etching in the clear coat and when drying the cars the towels would get sticky and start streaking.After a LOT of research and multiple water tests being run, we found we have very high TDS (Total Dissolved Solids). Government recommends not to drink water above 500 TDS, ours was 998. Two ways to lower TDS; boil it (distill it), or use reverse osmosis. To get the capacity we needed most companies wanted thousands of dollars for huge systems. I didn't need whole house, but enough for kitchen and one faucet to wash cars. iSpring was by far the most helpful when I called vendors. Plus their RCS5T had plenty of capacity. We added a 40 gallon storage tank, pump, and 20 gallon pressure tank and ran separate lines.At startup we could not have been more thrilled. Even when we wiped the kitchen counter top it was now smooth and clean feeling. Eureka!!!However, after a few months we started to hear the RO system cycling off and on a lot when it was filling the tank and got near the top. I tried different float valves but got the same thing.I called iSpring and talked to Nick in Tech Support. He listened, repeated back how I had set it up to make sure he understood, and then explained what he thought the issue was. I was fully prepared to hear the float valves were crappy, or my whole idea was nuts (a couple of other companies basically told me that). Instead, he asked for a copy of the invoice and said he would send out replacement parts. On the third day after that I received a complete new RO Head. This is essentially a complete new RO assembled system minus the filters, connection fittings, and instructions.I disconnected the old system, connected the new system, and life is once again beautiful. The off/on cycling is gone.To say I could not find a better company, better product, and better support person than Nick to deal with is an understatement.Thank you iSpring and special thanks to Nick for truly listening, nailing the issue, and responding so well. Products and service like this are very hard to find. Nick made me feel like he was a partner in my project; not just there to deal with me. Talk about exceeding expectations...With the water we have, we will be staying with iSpring!!!

We are on a well with very stinky water. I added all kinds of filters, chlorine injector, and water softener. Water looked and smelled great. But wait... After some time our clear dishes were all becoming etched and frosted looking when washed in the dishwasher. If water dried on our dark cars it would make light etching in the clear coat and when drying the cars the towels would get sticky and start streaking.After a LOT of research and multiple water tests being run, we found we have very high TDS (Total Dissolved Solids). Government recommends not to drink water above 500 TDS, ours was 998. Two ways to lower TDS; boil it (distill it), or use reverse osmosis. To get the capacity we needed most companies wanted thousands of dollars for huge systems. I didn't need whole house, but enough for kitchen and one faucet to wash cars. iSpring was by far the most helpful when I called vendors. Plus their RCS5T had plenty of capacity. We added a 40 gallon storage tank, pump, and 20 gallon pressure tank and ran separate lines.At startup we could not have been more thrilled. Even when we wiped the kitchen counter top it was now smooth and clean feeling. Eureka!!!However, after a few months we started to hear the RO system cycling off and on a lot when it was filling the tank and got near the top. I tried different float valves but got the same thing.I called iSpring and talked to Nick in Tech Support. He listened, repeated back how I had set it up to make sure he understood, and then explained what he thought the issue was. I was fully prepared to hear the float valves were crappy, or my whole idea was nuts (a couple of other companies basically told me that). Instead, he asked for a copy of the invoice and said he would send out replacement parts. On the third day after that I received a complete new RO Head. This is essentially a complete new RO assembled system minus the filters, connection fittings, and instructions.I disconnected the old system, connected the new system, and life is once again beautiful. The off/on cycling is gone.To say I could not find a better company, better product, and better support person than Nick to deal with is an understatement.Thank you iSpring and special thanks to Nick for truly listening, nailing the issue, and responding so well. Products and service like this are very hard to find. Nick made me feel like he was a partner in my project; not just there to deal with me. Talk about exceeding expectations...With the water we have, we will be staying with iSpring!!!

I've had my system now for several years running great. A conservative measured estimate says I've likely put about 30,000 gallons through this system (based on metered data averaged for the time I've had the machine) providing 100% of the drinking and cooking water for a large household. I bought it because it was reasonably priced, had a significantly better waste/clean ratio than the majority of systems used in homes today, and its ability to run continuously - where most under-counter systems take 24 hours to refill the small tank and slow to a drip once emptied. I have the unit in my mechanical room where it's plumbed to a Kul drink dispenser upstairs and a standard office-style water dispenser in my bar.I've been very happy with the machine for the reasons above - I bought it because I'm on a metered well (Colorado thing - limited to what your meter is permitted for; not a gallon more and you can't buy more) and I wanted to filter any possible contaminants out. RO systems can remove most any unwanted contaminants from a well, and I know there are some known contaminants here, including the excess minerals from my PH neutralizer.Our water tastes incredible, and I'm very picky. When I go anywhere on city water or unfiltered water, I can't stand the taste - so I tend to take my own anywhere I go.After many years of dutiful duty, I noticed some odd behavior with it running sometimes and not shutting off even after building pressure to where it should (which includes filling and pressurizing a remote tank upstairs). I reached out for some guidance on what to look at replacing to keep it running optimally, since we depend on it so much (not expecting any warranty given the age of the machine). Instead of the typical form letter from a support person who didn't even read the original request - I got a response from Sean where he clearly seemed to understand the issue and was already thinking what may be needed, while asking for some additional details.iSpring and Sean went above and beyond what I could've expected and are sending me the parts I need to make the machine good as new.I have quite a few products from iSpring around the house, including the RO system, storage tank, and spindown filter for my irrigation, and all appear to be top quality and work perfectly. I gladly stand behind any company that stands behind their products. I will continue to recommend their systems to anyone knowing they'll outperform other similar products, and come from an American company with exceptional customer support.

I've had my system now for several years running great. A conservative measured estimate says I've likely put about 30,000 gallons through this system (based on metered data averaged for the time I've had the machine) providing 100% of the drinking and cooking water for a large household. I bought it because it was reasonably priced, had a significantly better waste/clean ratio than the majority of systems used in homes today, and its ability to run continuously - where most under-counter systems take 24 hours to refill the small tank and slow to a drip once emptied. I have the unit in my mechanical room where it's plumbed to a Kul drink dispenser upstairs and a standard office-style water dispenser in my bar.I've been very happy with the machine for the reasons above - I bought it because I'm on a metered well (Colorado thing - limited to what your meter is permitted for; not a gallon more and you can't buy more) and I wanted to filter any possible contaminants out. RO systems can remove most any unwanted contaminants from a well, and I know there are some known contaminants here, including the excess minerals from my PH neutralizer.Our water tastes incredible, and I'm very picky. When I go anywhere on city water or unfiltered water, I can't stand the taste - so I tend to take my own anywhere I go.After many years of dutiful duty, I noticed some odd behavior with it running sometimes and not shutting off even after building pressure to where it should (which includes filling and pressurizing a remote tank upstairs). I reached out for some guidance on what to look at replacing to keep it running optimally, since we depend on it so much (not expecting any warranty given the age of the machine). Instead of the typical form letter from a support person who didn't even read the original request - I got a response from Sean where he clearly seemed to understand the issue and was already thinking what may be needed, while asking for some additional details.iSpring and Sean went above and beyond what I could've expected and are sending me the parts I need to make the machine good as new.I have quite a few products from iSpring around the house, including the RO system, storage tank, and spindown filter for my irrigation, and all appear to be top quality and work perfectly. I gladly stand behind any company that stands behind their products. I will continue to recommend their systems to anyone knowing they'll outperform other similar products, and come from an American company with exceptional customer support.

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.