When people invest in a water softener, they often focus on the size of the unit or the quality of the resin. But there's one important feature that's often overlooked—the controller. The controller determines when your water softener regenerates, and choosing the right one can make a big difference in your water usage, salt consumption, and long-term operating costs. What is Regeneration? A water softener removes hardness minerals such as calcium and magnesium from your wate