Guides

How to Choose a Water Softener in 2026: Sizing, Salt Efficiency, and Cost

Choosing a water softener starts with your water test, not the grain rating on the box. This guide explains how to calculate your household’s hardness load, size a system, and compare usable capacity at different salt doses. It also compares five salt-based water softeners, including Rheem, Whirlpool, Pentair Fleck, and SpringWell options, while covering installation costs, ongoing salt use, regeneration water, and key operating limits.