The iSpring RCC7AK is an upgraded version of the RCC7 model with the addition of a nice extra filter. It can filter out all types of contaminants and enrich the water in the same process giving you a healthier, natural-tasting, clean drinking water.
This is our pick for the best under sink reverse osmosis system.
Excellent Filtration Process
The iSpring RCC7AK Reverse osmosis system features a multi-layered filtration process designed around 6 very efficient filtration stages specially tailored to progressively remove all types of contaminants and improve the water quality.
The first three stages are pre-filters consisting of polypropylene sediment filter in the 1st stage, GAC filter in the 2nd stage and a carbon block filter in the 3rd stage.
These three filters trap all the sediments and particles that are larger than 5 microns and more importantly removes chlorine, chloramines and other chemicals present in the water.
The fourth stage where the magic happens sits a quality RO membrane which eliminates all the remaining contaminants down to 0.0001 microns leaving behind only pure water.
A fine GAC filter takes the fifth stage and where the water from the RO tank is further polished to remove any residual contaminants from the tank.
Restoration of Lost Minerals
After going through the initial 5-stage RO filtration process, the RCC7AK includes a 6th stage which consists of an alkaline remineralization filter.
The standard 5 stages produce clean, pure water with all the contaminants removed as well as the few helpful minerals present in the water.
This 6th stage is a big plus as the alkaline filter restores the healthy minerals lost due to the RO process. The AK filter features red mineral stones which add back calcium and other essential minerals such as magnesium and potassium.
Therefore, you not only get the benefit of drinking clean, purified water but you are also assured of getting some healthy minerals as well and a better, more natural taste.
RO water is so pure and as such it often tastes unnatural, but with this alkaline filter in place, your water will certainly taste much better.
Furthermore, the filter is made up of only natural mineral stones that serve as the filtration media hence your body will have no problem absorbing the restored minerals directly.
The filtration capacity of RO membrane of this iSpring RCC7AK model is also quite decent for an under-sink residential RO system.
It’s capable of producing up to 75 gallons of filtered water a day which is sufficient to handle the water needs of small to medium-sized families whether it’s drinking or cooking.
Moreover, the system is relatively efficient as for each gallon of pure water produced, it wastes only 2 gallons which is really a mean feat for most filtration systems.
- Efficient filtration process ensures crisp, clean, drinking water
- Restores healthy minerals to the water and improves its pH balance
- Decent filtration capacity and pure to wastewater ratio
- Durable stainless steel construction
- Easy installation with a convenient noise-free operation
- Backed by one year warranty plus a one-year money-back guarantee
- That automatic shut off valve seems a bit flimsy
- May need some DIY skills for easy installation
Installation and Maintenance
Featuring quick fittings, a cabinet fitted bracket and a clear, well-organized manual and videos, installing the RCC7AK is quite easy, especially if you have some little DIY skills.
All the parts you need including the pressurized tank, faucet, drain saddle, feed water adapter, tank valve and tubings are provided alongside the filters, membrane and the RO frame itself.
The system will easily fit under any standard kitchen sink and the overall construction is quite solid. The filters are durable too with the first three pre-filters requiring replacing just twice a year and the two post-filters requiring changing once a year.
The membrane will last 2 to 3 years based on the quality of your source water. Noise won’t also be a major problem like in other systems. The unit runs smoothly producing the least sound possible.
All in all, the iSpring RCC7AK is a well-designed RO system with an effective 6-stage filtration process that eliminates all kinds of contaminants from the water and replenishes it with essential, natural minerals.
It’s definitely a win-win investment for anyone looking for an affordable system that can deliver a more natural tasting and healthier filtered water.
This video shows you step-to-step how to install iSpring 6-Stage RCC7AK Under Sink Reverse Osmosis Drinking Water Filter System.
Price & Rating
|Product||iSpring RCC7AK 6-Stage Reverse Osmosis System|
|Rating||(More than 3710 reviews)|
|Recommended price||214.99 USD (Check the latest price at Amazon.com)|
|Pre-filters||PP sediment filter|
Carbon KDF (GAC) filter
Carbon block (CTO) filter
|RO membrane||0.0001 microns|
|Post-filters||Fine GAC final polishing filter|
Alkaline remineralization filter
|Incoming Water Pressure||45 PSI – 70 PSI|
|TDS||About 20-70 PPM|
|Storage tank||3.2-gallon capacity|
|Tubing||4 color-coded tubing|
|Faucet||Lead-Free brushed nickel faucet|
|Fitting adaptors||1/2″ NPT & 3/8″ COMP|
|Filtered Water to Waste Water Ratio||1:3|
|Features||First stage clear housing|
Spare fittings & O-rings
1-year manufacturer warranty
iSpring’s unique lifetime technical support
|Documents||User Manual [PDF]|
|6-Month||iSpring F3 – Prefilter Replacement|
|1-Year||iSpring F9K – Set for 6-Stage (RO membrane is not included)|
|2-Year||iSpring F19K75 – Set for 6-Stage + 1 RO membrane|
|3-Year||iSpring F28K75 – Set for 6-Stage + 1 RO membrane|
|RO Membrane (only)||iSpring MC7|
|Post filter (only)||iSpring FT15|
|Minerals filter (only)||iSpring FA15|
The size should be 1/2″. Many users suggest using a 1/2″ diamond drill bit with a hollow in the middle to drill the hole. For example https://amzn.to/2BaC9Xq.
Many customers asked and the answer from the manufacturer is “Yes, they are all BPA free”.
After you installed the RO system, make sure you have completely drained the tank several times, if it’s still cloudy, you should contact the company to check again.