An alkaline filter to replenish lost minerals, and a good size storage tank all for under $250. Too good to be true? We review the iSpring RCC7AK and find out.
Filtration Stages: 6
Warranty: 1 Year + 30-day money back guarantee
Dimensions: RO unit: 15 x 8 x 18 inches, storage tank: Diameter 10 ¾ inches, height 14 ¼ inches
Filter Lifespan: Stages 1-3 = 6 months, Stage 4 (membrane) = 2-3 years, Stage 5 = 1 year, Stage 6 = 1 year
Filter Cost: Cheaper than rival systems
Water Production: 75 gallons per day (at optimal settings)
The iSpring RCC7AK is a six stage reverse osmosis home water filter. Its two main selling features are its cost and alkaline filter. The RCC7AK is really well priced, and represents amazing value for a 6-stage reverse osmosis system.
It features an alkaline filter, and a water production rate of 75 gallons per day. These are top features that usually cost a whole lot more. iSpring also offer lifetime customer support from a team of certified professionals. Installing one of these systems can seem like a difficult proposition, but help is never far away if you choose iSpring.
The iSpring RCCAK7 is enhanced with alkaline to restore minerals that are lost during the reverse osmosis process. Magnesium and calcium are added back into the water after being stripped away. However, there is no pH monitor or way of measuring just how much mineral is added back. These alkaline filters are rarely completely efficient so I’d be very surprised if the water was as alkaline rich as it was originally. Anyway, iSpring advertise “great-tasting water” and suggest that using their system equates to water costing just 2 cents per bottle.
The system offers a rejection rate of contaminants of up to 99% . This figure is commonly brought up among competitors, but the effectiveness depends on the source water quality, pressure, and temperature. Reverse osmosis is probably the most effective form of water filtration available in the home. It removes all common contaminants to a high degree, and even protects against things like pesticides and pharmaceuticals. This kind of protection can only really be improved by adding a UV filter to the system. This can be added at extra cost, and would eliminate any harmful bacteria from the water.
Perhaps the most attractive thing about this RO water filter is that its design and function were reviewed and upgraded in 2014. After listening to customer feedback, iSpring improved the storage tank and shut-off valves, and upgraded the 5th stage carbon filter. That shows a commitment to quality which impresses me.
The iSpring RCC7AK also includes upgrades such as ceramic valves, designer faucets, and brushed nickels (these are added at an extra cost).
We also favorably reviewed the RCC7AK’s cheaper, 5-stage, younger sister, the iSpring RCC7 recently.
The iSpring RCC7AK system will produce around 75 gallons of water each day. This is at a rate of around 2-3 gallons per hour. This number depends on the input water pressure, temperature, and water chemistry. It features a 3.2 gallon tank which has an automatic shut-off for when the tank is full.
This system uses 6-stages in its water treatment process. Each stage performs a special job to purify the water.
Stage1: A high-capacity polypropylene sediment filter which removes sediment, rust, sand, dust, and particles.
Stage 2: A granular activated carbon filter which removes unpleasant tastes, odors, colors, cloudiness, and chlorine.
Stage 3: A carbon block that removes residual tastes, colors, and odors. Also, improves the pre-filter’s efficiency and extends the membranes life.
Stage 4: The reverse osmosis membrane. Will remove contaminants such as fluoride, radium, arsenic, lead, chromium , chlorine, and bacteria.
Stage 5: A carbon filter that removes any possible residual odors or tastes from the storage tank.
Stage 6: An alkaline PH filter that balances the PH of the water and adds healthy minerals back into your water supply.
More information on the operation of reverse osmosis water filters can be found in our RO guide.
The stage 1, 2, 3, and 6 filters are recommended to be replaced every 6 months. The stage 4 membrane every 2-3 years, and the stage 5 filter every 12 months. A pack of filters lasting 1 year retails on Amazon at a very reasonable price.
The iSpring RCC7AK is of dimensions 15 x 8 x 18 inches (RO unit) and the storage tank has a diameter of 10 ¾ inch and height 14 ¼ inch. It has a weight of 20 pounds. The parts are color coded and iSpring state that installation is “Easy”. There is a comprehensive installation video available on youtube if you are worried about this part.
The installation requires a basic tool list:
- Variable speed drill
- 1/8” ¼”, 7/16”, ½”, and 5/8” drill bits
- Philips screwdriver
- Utility Knife or scissors
The system comes with everything else needed for self installation:
- Storage tank
- Color coded tubing
- Lead free faucet
- Tank valve
- Feed water adapter
- Drain Saddle
- Teflon tape
- Two wrenches
- 3 spare O-rings
- 2 spare elbow fittings
- User manuals
Pros and Cons
|Cost, it's relatively inexpensive.||Some DIY skills required for installation.|
|Larger RO membrane means faster water production. Ideal for larger households.||PH filter not 100% efficient. Doesn’t completely replenish all mineral loss.|
|Low drinking water to waste water ratio.|
Reverse osmosis system are among the most effective forms of home water filtration. However, they aren’t perfect and will only filter water at one drinking point in the home (usually the kitchen faucet). If you require filtered water throughout the house (including the bathroom), then you need a whole house water filter system. Check out our guide to see how the best models on the market compare.
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