In this article, we are going to review 2 of iSpring’s highly popular and affordable RO water filter systems, namely the RCC7 and the RCC7AK. The only difference between the two is that the latter comes with an additional remineralization stage to increase water alkalinity.
Apart from that, both units feature the same NSF-certified 5-stage filtration process designed to progressively remove impurities from your water to make it ready for drinking.
On a side note: At this point in time, there seems to be no solid scientific evidence that says that alkalinized water has any additional health benefits.
The recommended pressure at which these system can operate is 45-70 psi. If the water pressure in your home is too low, filtration might be inefficient and slow.
As already mentioned above, the iSpring RCC7 and RCC7AK are tested and certified against NSF Standard 58. They remove a bunch of heavy metals, hormones, viruses, bacteria – you name it – and provide water that’s clean, safe and tastes great.
Water capacity is up to 75 gallons per day – enough to provide even larger families with plenty of water at all times.
Above that, the filtration runs very quietly. You will most probably never hear any noise from it.
It may look complex at first, but we consider the install of the iSpring RCC7 or RCC7AK to be fairly simple and straightforward. All parts are included and you are guided by clearly written instructions and helpful videos. On top of that, iSpring’s professional technical support based in Alpharetta, Georgia is just one phone call away.
Sure, some tools are required like a pipe wrench and drill, but apart from that all you need is a little patience and about 90 minutes spare time. If you are handy around the house, you might be even faster than that.
By the way, if you decide to go DIY, make sure to push the tubing ½ inch deep into the quick connect fittings to avoid leaks.
This is iSpring’s installation video for the RCC7 model:
Both systems are low in maintenance and replacement filters are standard-sized. In order to change the filters or membrane, you have to shut off the cold water supply and depressurize the whole system.
For the filters, twist off the housings using the wrench, remove the old cartridges and replace them with new ones. Then tighten the housings back on.
For the membrane, first remove the tubing from the quick connect fitting on the membrane housing cap. Twist off the housing cap and pull out the old membrane. Next, clean the membrane housing using a mix of hot water and soap. Rinse thoroughly afterwards. Lastly, insert the new membrane into the housing without making direct skin contact. Make sure the O-ring is properly seated and put the membrane housing cap back on and tighten it.
According to iSpring, this is how often you will have to change each filtration component:
Please note: Replacement frequency depends on your water usage and source water quality. What’s more, whenever you notice a decrease in water flow or treated water quality, it’s important to replace the filters in a timely manner.
Replacement costs? About $60 per year for the RCC7 and $85 for the RCC7AK, which is simply outstanding!
Here is what we don’t like:
After installing the iSpring RCC7 or RCC7AK and using it for a couple of months, it seems like most customers couldn’t be happier with their purchase. Both RO systems completely eliminate the need to buy bottled water ever again, which means that they pay for themselves in about a year. They deliver safe and great tasting drinking water and are sized just fine for most households.
Our verdict: 4.5 out of 5 stars!
If you have any questions about the iSpring RCC7/RCC7AK or any other filter system really, please don’t hesitate to leave a comment below!
And if you are looking for more detailed RO system reviews, you can find our Top 10 list right here!