Grain & GallonBuying guide
Best salt-free water softeners, compared by their published limits
The best salt-free water softener is the one whose hardness, iron and pH limits fit your water. Four TAC systems compared, and when none of them will work.
Salt-free softeners
Salt-free water softeners, often sold as conditioners or descalers, reduce scale but don't soften: the calcium and magnesium stay in the water. This hub is for anyone weighing one against a salt-based softener. Start with whether salt-free water softeners work, which sets independent lab results against the makers' claims. The salt-free vs salt comparison shows what changes in your home with each, from spots and soap to salt, drain water and sodium. If salt-free fits your water, the best salt-free water softeners roundup compares four systems by their published hardness, iron and pH limits. On a well with iron or manganese, read the iron filter vs water softener guide first, because those limits decide whether a salt-free unit can work at all.
Comparison
Salt-free vs salt water softener: what changes in your home
Salt-free water softener vs salt: what each does to hardness, scale, salt and drain water, iron limits and sodium, with every figure from a primary source.
How-to
Do salt-free water softeners work? What the research and the spec sheets say
Do salt-free water softeners work? They cut scale but leave hardness in. What independent studies measured, each maker's limits, and when salt is better.