Water softening system for 17.3 dH hard water

Hi!

I just did some research on the water hardness at our new place. It's quite severe with 17.3 dH.

Without a water softening system, building a new house there is probably not recommended, or what do you think?

What should I take a closer look at in this regard for a 220m² single-family house? An ion exchanger?

Grünbeck, BWT and all those names... just install a system in the utility room on the main line and that’s it... or you live with the white spots... the investment is not insignificant...

In the current house, there is something worth about €2,000 that supplies two housing units.

You may also count on that scale in the new house...