First, test your water hardness. You can buy a $10 test kit or check your city’s water report. If it’s over 7 grains per gallon, you need serious firepower.
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Next, think about space. Salt-based systems need a big tank and a drain. Salt-free ones are tiny and sit on your main line. Don’t buy a fridge if you live in a closet, ya know?
Lastly, ask yourself: “Am I lazy?” If yes, go salt-free or magnetic. If you’re a perfectionist who loves scrubbing less, go salt-based. Your future self will high-five you either way.