iSpring RCB3P Reverse Osmosis System Review [Commercial Grade]

iSpring RCB3P reverse osmosis system combines three high-efficiency 100gpd RO membranes with a booster pump that produces up to 300 gallons of filtered water per day (300GPD). This is a great choice for commercial applications.

The iSpring RCB3P is amongst the top commercial-grade RO systems on the market. This flexible and convenient system is specifically designed for producing the purest water at high capacity making it a perfect model for commercial applications like in restaurants, labs, and industrial or hospital settings.

Filtration Process

The iSpring RCB3P uses a 5-stage filtration process that effectively removes all kinds of contaminants and impurities from your water supply. Stage one is a polypropylene sediment filter which traps all particle larger than 5 microns.

Stage two consists of a granular activated carbon (GAC) filter while in stage three there’s an activated carbon block filter. These two help remove chlorine, chloramine, cloudiness, odors, VOCs and other chemicals hence improving the taste of the water.

Stage four is made up of a triple membrane design consisting of three highly efficient RO membranes.

This unique combination of top quality RO membranes ensures optimal performance in removing all kinds of contaminants in the water from heavy metals, viruses, bacteria, toxins, hardness, and a long list of many other impurities.

The fifth stage is a carbon post-filter and this eliminates any residual tastes, odors, and contaminants from the RO tank.

Now the best part about this unit is that while most other systems feature standard 10” filters, this one uses oversized 20” pre-filters.

They remove twice as many contaminants as the standard filters with the same amount of water. This makes the system highly effective and ideal for heavy use in commercial environments without having to replace the filters frequently.

Filtration Capacity

As we mentioned earlier, the RCB3P is equipped with three high-efficiency membranes each producing 100 gallons of purified water per day. Together they give you up to 300 gallons of water per day which makes it a really great option for commercial applications.

300 gallons is a large amount of clean filtered water and it will cater to most large demand needs. It’s perfect for restaurants, small offices, labs, and even salons.

However, it doesn’t come with an RO storage tank which it will require for it to work efficiently. It will need a large pressurized storage tank but it’s compatible with most of the options available on the market, so it’s not something to worry about much.

The system comes with a booster pump which not only increases the feed water pressure to optimal levels but also boosts the production of purified water. It’s capable of raising the pressure up to 80 psi while it can work with feed water pressures as low as 25 psi.

By increasing the pressure to optimal levels, the booster pump also maximizes the efficiency of the membranes hence resulting in a fairly decent pure to drain water ratio.

For every gallon of water produced, the unit will discharge two gallons of wastewater which is a pretty fair ratio compared to most other commercial-grade systems out there.

Installation and Maintenance

The installation of the RCB3P won’t present much challenge as the system comes with all the tools necessary to set it up including the first set of filters.

The only thing you will need is the pressurized RO storage tank and the delivery pump for the output line as the system doesn’t provide adequate pressure.

It comes with a free-standing frame which allows you to set it virtually anywhere you want. It keeps everything nice and clean.

The downside though is that it will take a little more space than other standard RO systems. It’s a heavy-duty system made for commercial settings.

As for maintenance, there’s very little to worry about. The system is designed to automatically flush the membranes every now and then, so no back-washing or manual flushing is required.

The filters and the three membranes last more the ones you will find in standard RO systems as they are oversized 20” filters. The system is all equipped with a pressure gauge to help you quickly monitor the pressure changes and know when the filters need changing.

If you are after the best RO system for commercial use whether it’s in a restaurant, office, lab or salon, the iSpring RCB3P is certainly a perfect choice. It’s capable of producing a large amount of filtered water at a faster rate and the filters are highly durable.


  • Completely removes all contaminants in the water
  • High filtration capacity of up to 300 gallons per day
  • It’s equipped with a booster pump which increases its efficiency
  • A free-standing frame provides great portability and flexibility
  • Sturdily build with oversized filters for commercial use
  • Easy to install and maintain


  • Requires an RO storage tank which is not included More space is needed for the installation

Read moreiSpring RCB3P Reverse Osmosis System Review [Commercial Grade]

iSpring RCC1UP Reverse Osmosis System Review

Following the RCC7U is the iSpring RCC1UP which is an upgrade to the RCC7U model with the addition of a booster pump. It’s a unit that guarantees maximum performance and great filtration results in situations where the pressure of the source water is quite low.

Filtration Process

The RCC1UP utilizes a 6-stage RO filtration process same as the RCC7U. The first three pre-filters comprises of a sediment filter, a carbon KDF (GAC) filter and a carbon block (CTO) filter.

These filters effectively eliminate all large contaminants as well as chlorine, chloramines and other chemicals in the water. The RO membrane, on the other hand, performs a thorough filtration removing up to 99% of the remaining contaminants down to 0.0001 microns.

The fine GAC filter in the 5th stage takes care of residual contaminants from the RO tank while the 6th stage UV sterilizer which consists of powerful 11 watt UV lamp destroys all the bacteria, viruses and other microorganisms that may have made it past the RO filter. 

This highly effective filtration process ensures the water delivered on the RO faucet is totally free of contaminants and very safe to drink and cooking.

The unit is also equipped with a flow sensor switch that automatically controls the turning on and off of the UV light according to the water flow hence saving power.

Pre-installed Booster Pump

Besides featuring a UV light filter, the RCC1UP has a pre-installed booster pump which is an essential addition that allows the system to work efficiently even when the source water pressure below 40 psi.

The pump can raise the pressure of the feed water from as low as 30 psi to around 80 psi which is an optimal pressure level that enhances the performance of the unit and its production speed too.

Therefore, unlike its predecessor the RCC7U, this unit will give you faster tank fill rates even with fluctuations in your source water pressure.

Filtration Capacity

Another area we liked about this iSpring model is its high capacity RO membrane which can output up to 100 gallons of water per day.

This is much higher capacity than most of the other standard residential RO systems from iSpring on our list. It’s sufficient output that can suit well families of almost any size.

Furthermore, with the pump boosting the production speed, you can expect a steady flow of clean water all day long. The pump also reduces the wastewater from 3 gallons to about 2 gallons for every gallon of purified water produced which is way much better.

Installation and Maintenance

We found the RCC1UP relatively easy to set up as it uses push to connect fittings and comes with a clear manual and all the parts you need to install it.

It might be a little tricky though if you are not that good with DIY installations as it will require a power source and a bit more space because it’s somewhat bulky. However, it will fit in most under-sink kitchen cabinets provided is higher than 20”.

The filter cartridges in the first 3 stages require replacing every 3 to 6 months based on your water quality while the stage 5 filter is to be replaced every year. The UV light filter can last about a year.

The RO membrane requires the least maintenance since it can last 2 to 2 years before requiring replacement.

The best part is that despite having the boost pump, the system runs quietly, only producing a low volume hum which is hard to hear with normal kitchen activity.

The overall quality of the unit is good too. The prefilters feature thick and solid housings while the fittings are plastic but feel durable. It’s a system that will definitely serve you for many years.

Aside from the installation being slightly tricky, the RCC1UP is a powerful and reliable RO system that’s designed to get the job done right.


  • Removes all kinds of impurities
  • UV sterilizer help kill any microorganism in the water
  • Has pre-installed booster pump to enhance performance
  • A very high output ideal for medium to large families
  • Doesn’t waste a lot of water
  • Generates very low noise during operation
  • Backed by one-year limited warranty with a one-year money-back guarantee


  • Somewhat bulky requires a little more space to install
  • Installation might be slightly difficult

Read moreiSpring RCC1UP Reverse Osmosis System Review

iSpring RCS5T Reverse Osmosis System Review [500 GPD]

iSpring RCS5T reverse osmosis system is a high capacity tankless commercial grade reverse osmosis system. The RO system’s patented dual-flow membrane produces a rate of 500 gallons per day of RO filtered water with 1:1 waste to a pure water ratio.

iSpring RCS5T is designed purposely for those looking for a system that can supply purified drinking water on demand.

It’s a high-capacity tankless RO water filter system with an on-demand output ability which makes it a great choice for large families, small restaurants, coffee shops, and offices. 

Filtration Process

The RCS5T offers 5 stages of filtration with the first stage being a polypropylene sediment filter which removes debris down to 5 microns. It has a see-through housing that allows you to easily see if it’s blocked and requires replacement.

The next cartridge is a granular activated carbon (GAC) filter which traps chlorine particles, chloramines, and other pollutants like phenol and mineral oils.

The third stage consists of a carbon block filter which further removes all residual chlorine, tastes, odors as well as chloramines and microorganisms.

The fourth stage is one high-quality dual-flow RO membrane that removes contaminants down to 0.0001 microns which virtually eliminates 99% of all contaminants and pollutants common in the city or well water.

The last stage in the system is the post-carbon filter which takes care of any residual chlorine, chemicals or taste impurities and odors from the RO tank.

Tankless Operation

While it has a very effective RO filtration process, what makes this iSpring RCS5T system stand out is that it’s equipped with dual-flow membrane and booster pump, a combination which allows it to produce purified water on demand without requiring a storage tank.

This ability to work without the need for a tank makes the RCS5T an ideal choice for small commercial purposes as well as for households as it’s a great space-saving option.

In addition, the pre-installed booster pump does well to raise the water pressure going into the RO system which helps boost its performance and production rate.

The system can work with feed water pressure that’s as low as 25 psi and a maximum psi of 95 to 100, so it will work efficiently and effectively despite the pressure of the source water.

If your feed water pressure is quite low, you will find this booster pump to be a very useful addition plus there’s a nice built-in pressure gauge to allow you easily monitor the pressure.

Filtration Capacity

With a capacity to produce 500 gallons of filtered water per day (500 GPD) under ideal conditions, this iSpring RCS5T model is more than capable of meeting the daily demands of most large households and small offices with around 10 to 20 people.

The capacity is large enough to allow you even use the system for small commercial purposes like in a small restaurant, coffee shop or store and you will hardly notice any minor variations in the water production.

The best part is that you can pair the system with a pressurized storage tank if you desire to have reserve capacity for a steady and continuous supply.

A storage tank will be essential in case of very high usage situations, especially for commercial applications. You will need a delivery pump too as the output pressure of the clean water is about 10 to 15 psi on average.

Besides the high capacity, another major highlight of this iSpring RO system is the fact that it offers one of the most balanced pure water to wastewater ratio.

The dual-flow membrane ensures consistent output flow with a 1:1 pure to wastewater ratio which is pretty exceptional for such a high capacity system.

It will produce much less wastewater compared to other similar systems on the market that often have a pure to wastewater ratio of 1:3.

Installation and Maintenance

Installing the RCS5T is a breeze. Like the other iSpring’s systems above, this one is also designed for DIY installation and it comes complete with everything you need to set it up including a free-standing metal frame.

The installation manual is easy to understand and categorically explains every step accompanied by pictures in addition to the direct instructions.

Maintaining the unit is also simple. In fact, the system is designed to flush automatically to ensure the membrane is clean and works efficiently. No need to manually flush it.

All it’s required of you is changing the filter cartridges which is every 6 to 12 months for the carbon filters depending on usage and 2 to 3 years for the membrane. Furthermore, the booster pump produces very minimal noise thereby it won’t cause any disturbances.

The only setback is that it requires a power source for the booster pump which somewhat limits your installation options. Moreover, due to the large capacity, the power levels might be somewhat high, but that’s a tradeoff considering that it delivers a lot of purified water.

Generally, if you own a small restaurant, business or need a reliable tankless RO system for large residential use, then this iSpring RCS5T is a perfect choice. It will certainly not disappoint.


  • Removes up to 99% of contaminants in water
  • High capacity membrane delivers up to 500 GPD
  • Very efficient with 1:1 pure to wastewater ratio
  • Has a booster pump to ensure an optimum feed water pressure
  • Comes with an integrated pressure gauge
  • Installation is very simple and the pump operates quietly
  • Has a 1-year warranty


  • The booster pump may limit your installation options
  • Can lead to high power costs

Read moreiSpring RCS5T Reverse Osmosis System Review [500 GPD]

iSpring RCC7U Reverse Osmosis System [UV Sterilizer]

iSpring RCC7U reverse osmosis system with its advanced 11 watt UV sterilization stage is the perfect solution to purifying well water and other water sources containing excessive microorganisms. The unique water flows sensor switch turns the UV unit on and off automatically.

The iSpring RCC7U is one of the best RO systems on the market that provides a nice combination of standard RO process and an Ultraviolet (UV) sterilizer to deliver an extra level of protection that guarantees a much safer and cleaner water.

Filtration Process

To start, the RCC7U is based on the iSpring RCC7 model. The filtration process is composed of the standard 5 stages of the RCC7 with the addition of a UV light filter which makes it a 6-stage RO system.

In the first line of defense, we have the three-carbon prefilters which eliminate sediments, particles and contaminants larger than 5 microns. They also remove chlorine, chloramines unpleasant taste, odor as well as other chemicals present in the water.

Then there is the 0.0001-microns RO membrane in the 4th stage which traps more than 1000 known contaminants in water including fluoride, arsenic, chlorine, fertilizers, pesticides and heavy metals. 

The 5th stage is a fine GAC filter which further clears residual contaminants from the water as it leaves the Ro tank.

UV Light Filter

On top of the standard 5-stage filtration process, the iSpring RCC7U features a UV filter in a stainless steel housing which forms the last stage of the system.

Chlorine is used in municipal treatment plants to kill off bacteria and microorganisms. However, the 5-stages of the RO system completely removes all the chlorine present in the water.

The side-effect of this is that the risk of these microorganisms growing back into the RO water as it’s stored in the RO tank or passes through the tubing is increased. This is where the 6th stage of this iSpring RCC7U model comes in handy.

The filter uses an 11W UV sterilization lamp which passes UV rays into the RO water killing up to 99% of all the bacteria, viruses, mold spores, cysts and other microorganisms that are likely to grow in the water.

The combination of this UV filter and the standard RO process makes RCC7U really effective in not only removing contaminants but also dangerous microorganisms that might be present in the water.

Another commendable thing about this filter is that it comes with a smart flow sensor which automatically turns the UV lamp on and off with water flow.

It turns on the UV light immediately it detects flow and turns off again automatically when you turn off the tap. This way it guarantees greater efficiency and saves power in addition to lengthening the service life of the UV lamp.

Filtration Capacity

Same as the RCC7, the RO membrane of the RCC7U model can deliver up to 75 gallons of filtered water per day. Like I mentioned earlier, this is fairly high output for a residential RO system and should be enough to cater to the daily water needs of most households.

The unit also doesn’t generate a lot of wastewater. For every gallon of clean water it produces, about two gallons get wasted and that’s within the range of many under-sink systems you will find on the market.

Installation and Maintenance

Setting up the RCC7U can typically take a few hours but the process is relatively simple since it’s designed for DIY installation with all parts and instruction manual included.

The entire unit will fit easily in most under-sink cabinets. However, you will need to ensure you have a power supply nearby the cabinet for the UV filter. That might be the only challenging part as far as installation is concerned.

To sum it all, the iSpring RCC7U is indeed a wonderful RO system that no doubt guarantees extra quality water. If you use well water or have concerns about the possibility of bacteria in your water, then you might want to consider getting this iSpring RO system. 


  • Removes more than 1000 contaminants in the water
  • UV light filter absolutely kills all microorganisms
  • Smart flow sensor automatically turns the UV lamp on and off
  • A fairly high output of up to 75 gallons of water a day
  • A decent 1:2 pure to wastewater ratio
  • Comes with a 3-year limited warranty and lifetime support


  • Requires power supply which may make installation under the sink a bit challenging

Read moreiSpring RCC7U Reverse Osmosis System [UV Sterilizer]

iSpring RCC7D RO System Reviews

The iSpring RCC7D is an RO deionization filtration system specially designed for anywhere that ultra-pure water with zero total dissolved solids (TDS) is required.

It provides complete water purification via six individual filtration stages that include a specially manufactured deionization (DI) resin filter which makes a superb option for either aquarium use or drinking water.

Filtration Process

The early filtration stages of the RCCD7 are the same as the RCC7 and the other iSpring RO systems.

The five stages feature the 3 carbon pre-filters that capture large contaminants and volatile organic carbons in the water. They as well ensure chlorine, chloramines and other chemicals are removed in the water ahead of the RO membrane.

The TFC RO membrane completely removes all the contaminants that are larger than 0.0001 microns while the fifth stage coconut shell post-filter further captures any residual chlorine and chloramines that sipped through the RO membrane.

Deionization Filter

The last stage of the iSpring RCC7D is the specially designed deionization resin filter and it’s what sets this model apart from most other similar systems in out there.

It’s a super-efficient deionization post filter which completely removes the total dissolved solids (TDS) in the filtered water that the RO membrane could not capture.

It effectively uses ion exchange resins to clear all the dissolved contaminants bringing the water to 99.99% purity with close to 0 ppm TDS.  

In other words, it delivers the purest water possible, even purer than distilled water which makes the RCC7D ideal for use in aquariums, laboratory testing, and cleaning.

The water produced by the system is also safe for drinking, but considering that all the TDS and minerals are completely removed, it may taste plain or unpleasant to most people.

However, if your tap water is hard and you don’t mind the taste, then you can certainly use this system to soften your tap water hardness level and produce clean and highly pure drinking water.

Filtration Capacity

With regards to filtration capacity, the RCC7D will give you a maximum of 75 gallons of clean water per day which is sufficient for larger freshwater aquariums, reef aquariums, and fish breeders.

It’s as well enough for small to medium-sized families if you are using it for drinking water. It wastes around 2 gallons for every gallon of water it produces, so it’s equally quite efficient.

Installation and Maintenance

The installation process for the RCC7D can be a bit confusing but the instruction manual is clear and well organized plus there are videos that guide you through the process. All the parts are included and the unit is small enough to fit under most standard kitchen sinks.

In general, we would highly recommend the iSpring RCC7D to anyone who is looking for a system that can give them the purest water with almost zero TDS value.

The combination of the RO filtration process and the deionization filter will absolutely give you clean, clear and water with maximum purity possible ideal for your aquarium or drinking.


  • Captures all the contaminants including chlorine
  • Super-efficient deionization filter clears all the dissolved contaminants
  • Fairly large filtration capacity of 75 gallons a day
  • Suitable for drinking water, aquarium and applications that need pure water
  • Everything required for the installation is included
  • Relatively easy to install and comes with 1-year limited warranty


  • Produces ultra-pure water which may taste plain

Read moreiSpring RCC7D RO System Reviews