About 70% of a human being is made up of water and the 3/4th of the Earth’s surface is occupied with water. The biological effects of this compound cannot be replicated by any other compound and it is undeniably a very important part of the ecosystem and our lives. This makes water a very precious resource that not only sustains us, but also our planet. As human beings it is our duty that we keep this resource accessible and in its purest form.

One way to do this is installing water filtration systems in our homes. The RCC7AK is a remarkable product by iSpring that can change our perceptions of how we see, taste and smell water. It is multidimensional in its process and purifies water to provide clean, healthy drinking water.


Six Stage Filtration

The iSpring RCC7AK uses a very elaborate and extensive filtration method to ensure that the water is fully purified. The entire system is built around the innovative reverse osmosis technology that ensures a thorough removal of any impurities, which is more effective than conventional systems. The six stages employed by this system specifically sets it apart from other machines that use reverse osmosis, as it is more accurate in trapping foreign matter in the water.

The first stage uses a polypropylene sediment filter that prevents any rust or dust from passing through it. This part of the filtration system is encapsulated by a transparent covering which enables the user to be able to see the process taking place. The residue that is separated from the water is also apparent in the filter making it easy to determine when the filter might need changing.

The second stage of the entire filtration process uses granulated activated carbon (GAC) which is basically activated carbon in a mesh-like filter that can be used as a sieve. Activated carbon is a very useful material for filtration as it can absorb copious amounts of liquid and retain impurities in its pores. The GAC functions to remove any chlorine in the water as well as ensuring freshness of taste, smell and appearance.

The third stage of this machine uses a carbon block that has a dual purpose of keeping the water clean and also ensuring that the filter that is meant to employ reverse osmosis does not become damaged.

The fourth stage of the system contains the High Rejection TFC reverse osmosis membrane. This is a crucial part of the filtration process as it is very selective and cleans the water at a miniscule level.

The fifth stage in this machine uses a carbon filter. This polishing filter is meant to rid the water of any lingering tastes or odors and maintains the water quality for the customers.

The last operation conducted by the machine is passing the water through an alkaline pH mineralization filter. This filter makes the water more alkaline by replenishing some of the minerals into the water that are naturally beneficial for us. It covers up any mineral losses that might have occurred during the reverse osmosis process.


Filter life

Water Flow Rate

System Efficiency

Added Upgrades

A very useful thing about this product is that it has upgrades available to make the system even more convenient than it already is. Brushed nickel faucets and ceramic valves can be procured to make this high performance system look as stylish as it is practical.

There is also an option of availing a larger size of the membrane. This would occupy more area per square foot and so would be able to process more water at a time. In addition, a water flood alarm can be attached that can detect water levels and alert the user. The automatic shut off valve has also been improved to circumvent any issues and prevent the tank from overflowing.

For those who have issues with water pressure in their homes, a booster pump has also been made available that can help regulate any slow flow problems that are being faced in areas where the water source is such.


Product Specifications

  • System Dimensions: 14.5”w x 6”d x 18”h
  • System Capacity: 75 gallons per day at 60 pounds per square inch
  • System Package Dimensions: 14”w x 17”d x 23”h
  • System Package Weight: 30 lbs
  • Feed Water pH: 3.0-11.0
  • Feed Water Pressure: 45-70 pounds per square inch
  • Feed Water Temperature: 40-100° F
  • Reverse Osmosis System Components: 3.2 gallon pressurized tank, lead free brush nickel faucet, ¼ food grade tubing, automatic shut off and check valve
  • Installation Components: Filter housing and membrane wrenches, feed water valve, tank ball valve, drain saddle, inserts, additional fittings and manuals
  • 6 stage filtration components: Polypropylene sediment filter, GAC (Granulated Activated Carbon), CTO (Carbon Block), TFC reverse osmosis membrane, inline post carbon filter, alkaline pH mineralization filter

Customers’ Reviews and Conclusion

This appliance has received great feedback about its standard and the quality of water it can provide customers. It has had a positive environmental impact, as the users do not feel the need to use bottled water anymore. The preference of tap water with this particular filtration system is due to the improved taste it can provide to those that install and avail it.

The installation process has seemed to surface among users as a topic of discussion. There are comments that the system is very complex and difficult to set up, which could be true as the system is elaborate and complicated to assure the best possible drinking water is produced. There is a revised user manual available that is helpful and, more importantly, there is an installation video that is available to make installation as easy as possible.

Some users have encountered problems with the water pressure from their main water supply; the reviews show that the additional boosters have successfully eliminated many such hassles.

As it can be seen, this system has much to recommend it. It is very good at doing its job – its six filters ensure clean water without any loss of minerals. It is ideally suited to keep the users healthy as well as hydrated. If you are in the market for a water filtration system, you should definitely consider this one.