Water appliance review websites like Quality Water Home regularly review water softeners like the Kinetico brand. It offers six models of softeners: the basic, Premier, Signature, Essential, Powerline and Aquakinetic series. While the Powerline is powered by electricity, as with most standard water softeners, the remainder use only water pressure.
This saves a significant amount of energy annually. Additionally, four of the six are twin-tank models, while the Essential and Powerline feature only single tanks. The Powerline also has the largest tank size of the variants, from 0.7 to 2.5 cubic feet of volume. The Premier and Signature series utilize an upflow process, while the remainder use a downflow system.