I have purchased 2 iSpring reverse osmosis systems in the last 3 years. The first was a top-of-the-line 6-stage system with a storage tank. This system has worked extremely well for the two years that I have owned this home. When I moved in last year, I wanted to install the system in my new apartment. I chose the tankless system because I wanted to save space under the sink. Big mistake. The tankless system is practically useless. When you first turn on the faucet, the water literally flows out for about 20 seconds as the system dumps most of the water down the drain line and down the drain. Then when the water actually starts to flow, it comes out very slowly. It literally takes 3 minutes to fill my dog's water bowl. In fact it's so tiring that I left to do other things and on two separate occasions I forgot the reverse osmosis faucet was on and returned an hour later to the flooded kitchen. In addition, a reverse osmosis system requires high pressure to force water through the membrane for proper filtration. Without a pressurized storage tank, there simply won't be enough pressure to properly filter the water. Yesterday I bought a memory and connected it to the system. Now my reverse osmosis water fizzes as soon as I turn on the faucet and fills my dog's bowl in 20 seconds. As an added benefit, I tested the water with a dissolved particle tester. My regular tap water (that goes through a water softener) has a dissolved solids level of 500ppm. I then tested my reverse osmosis system with a holding tank bypass and got a reading of 100ppm. I then opened the reservoir valve and under pressure the water in the reverse osmosis system showed 25 parts per million. So the mere addition of a tank increased reverse osmosis filtration by a very large margin. Can someone from iSpring chime in and tell me why anyone would want a tankless system? While space is an issue, the problems of using this tankless system have rendered it virtually useless given the amount of time it takes to fill a dog bowl or just a glass jar. Also, please explain how a tankless system with no back pressure actually filters water well? Ясно, что безрезервуарная система что-то делает, поскольку она снизила содержание растворенных твердых веществ с 500 до 100 частей на миллион, но эта система рекламируется так же хорошо, как одна из стандартных систем с накопительным баком, и, по моему опыту, это просто not so. The tankless system contains four times more dissolved solids than the system after adding a pressure tank. Do yourself a favor and buy a standard system with a tank. iSpring is a good product, but paying twice as much for a tankless system that doesn't perform as well as a standard system makes no sense, and I was a little mad at iSpring for not pointing out the disadvantages of this system in comparison I have the same system with memory.
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