A control unit is located under a kitchen sink. The control unit controls the timing of the power demand from each device so that they can all be run from a single electrical circuit coupled to the control unit. The control unit also accommodates sensors and other accessories such as flow meters, electronic faucets, leak detectors, shutoff valves, and state communication either wired or wireless which allows these sensors and other accessories to be added with little additional cost beyond the cost of the sensors and other accessories.