I installed it myself without any problems. Whoever has a water pressure jump is the best option, there is a boost pump inside. Mineralizer, osmotic filter, coal and coarse filter. Comes with a faucet. We have been using it for about half a year, everything suits us, the water tastes great. Scale does not appear in the kettle. I forgot something to run with flasks for water. The only negative - it would be a little less noisy, it would be generally super. The boost pump buzzes, not critical, but audible. I advise you to choose before you buy, reviewed a bunch of reviews, everything is super.
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