Big box stores sell the same water treatment equipment across the United States which means it cannot be specialized for the location it will be installed. Think of it this way the water is different in Arizona, Montana, Florida, and New York. However, big box stores sell the same solutions in all of the previous markets. Often we find this units give out in a couple of years forcing them to be replaced costing you more in the long run. Have one of our technicians come out and explain the differences in the units so that whatever decision you make it will be an informed one.