I first purchased a Freije NS-2200 Easy Water conditioning unit in November 2009. The unit failed within the 3-year warranty period and was quickly replaced with a new unit. That unit recently failed in March 2021 and I purchased another one. As a returning customer, I received a 31% discount. I generally have good water that is odorless, tastes fine, washes cloths pretty well, and feels good when bathing but it is a bit hard and over time leaves scale deposits on my plumbing fixtures. The water is not quite hard enough to need a water softener but the scale deposition was problematic. Since using the Easy Water unit over the last 12 years, I have noticed a significant reduction in the amount of scale deposition than when before I had it. Now an occasional wipe with a scale removal product about every six months does the trick to keep my plumbing fixtures looking new except for the tips of the aerators, which collect more scale than other parts of the faucets, so I have to remove and soak them for a bit in the scale removal liquid to remove all of the scale that is on them. The East Water units are one of those items that it takes a long time before you know whether your purchase was worth it or not. In my case, it was.
Note: I also have a whole house sediment filter (1 micron) on my water line just before it enters the house and I have installed dual filter canisters on the cold-water side of my kitchen faucet and generally use a second sediment filter (5 micron) in the upstream cannister and a charcoal filter in the downstream cannister and while it is certainly not NYC tap water piped in from the reservoirs that collect Adirondack and Catskill mountain spring water nor is it pure Rocky mountain spring water, I would say that the water coming out of the cold water side of my kitchen faucet is as good as or better than most bottled waters. You'd be hard pressed to tell the difference in a taste test. There are other types of 9-inch filters for these cannisters such as bacteriological and chemical filters, of which I have one each on the shelf; but fortunately, I have never had a need for those. The filters last about six months and cost about $10-$15 each so I pay about $30-45 every 6 months to change out the three filters. The filters do nothing to help with the scale that is taken care of by the Easy Water unit but they do improve the water quality even though the water quality is quite good as it is, which I know is very good because I am in charge of our local water plant.