First of all I have had three reverse osmosis systems in my house for the past 20 years. I really like them and don't feel like adding calcium for flavor. It works very well as a substitute for distilled water. I use it in a CPAP machine. The first two were Costco's Watts Premier. It was very pleasant to live with them. I bought an iSpring to upgrade from a 4 speed to a 7 speed system to: Replace a leaking faucet that I couldn't fix. Get cheaper replacement filters. Get more volume. Produce less waste water for your septic system. well water. It looks like it was made out of quality components. It's said to be efficient, has a power rating, and appears to have three times the components of the previous quick-disconnect type. All of that is good. It is clear to me that it was a four-stage under-counter filter system. Then someone had a great idea and decided to add a pump that weighs a lot and requires electricity. Damn, let's add some UVs. The additional weight and size have not changed. This added an electrical requirement that most under-flush outlets don't have. This unit now weighs twice as much thanks to power cables, tiny control cables and hoses now running everywhere, front instead of back, with clips on holders that may or may not hold a component, and then additional clips for crafting components. a chain of latches on connectors, each dependent on the first. The engineers probably said we don't know if this will work for the customer. The marketing said it's okay, let's not solve this problem, we will not solve the problem and tell the customer that they can solve this problem in any way they can. If it were possible, I would build my own system and not buy it in the first place. All I can say, good luck with the wiring, you decide. Good luck finding a wall that can support the weight and leverage needed to change filters. You must solve this problem before making a purchase decision. And the information provided is not enough to plan it. The control wires are tiny, fragile wires with no quick disconnects and are too short to fit the control box anywhere near an outlet. One power cord is twice as long as the other, but they plug into the same outlet. All of this makes it too heavy to be supported by the designed mount, so it is recommended to put it on something for support. No design, no instructions. Then there is a check valve in the kit. Thanks, but there are no instructions on where to put it or how to use it. You should call support I think. So back to my choice. The Watt System is a lightweight quick release system for homeowners. This iSpring has a more industrial feel, with well-made and sturdier old-school components. They are sold to the same customer and look exactly the same in the pictures. This is not the case with seven levels in particular, and marketing needs to acknowledge this. If I designed this to still be under the sink I would split it in two. Place stationary elements on the back wall next to the socket. The replacement filters are then properly supported to replace conventionally placed filters. This reduces the weight of the device and makes it more intuitive for the customer.
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