Water Softener Video The HS-50 hot water softener is designed for commercial dish washers. This point of use hot water softening system is designed and built to handle water up to 180 F. The resin, resin tank, internal components and seals will take temperature above and beyond low temperature ware washing applications. Save chemical costs significantly and reduce acid cleaning by 95%. Meanwhile glasses,silverware and dishes and dish machine are not limed.