HomeAdvantage II is the newest product in the Eemax family of electric tankless water heaters. It comes in a wide variety of sizes, from 8kW to 36kW. The Eemax HomeAdvantage II provides residential spaces with instant, consistent and endless hot water and is 99.8% energy efficient. Features include self-modulating technology and digital temperature control (selectable from 80° to 140° F). Eemax.