No. Just like any other appliance, water softeners come with a variety of features, such as metered or day type softeners, with or without a by-pass, different sizes of by-passes, mechanical and electronic valves, with or without a protective outer jacket, and different types of resins. All of these features affect the efficiency of the unit and the amount of salt that you will use. Call for a free evaluation of your water and an explanation of your options.