Marketing InformationThe Rheem ProTerra Hybrid Electric Heat Pump is the most efficient water heater on the market. It features a hybrid heat pump design making it 400 Percent the efficiency of standard electric water heaters. It''''s so efficient, it pays for itself in 2 years or less and has an estimated energy cost savings of up to $3,730 over 10-years. It''''s smart, EcoNet Wi-Fi and the EcoNet app, you can check hot water availability, track energy usage and can control its modes; you can choose the efficiency or performance you want. New! top water connections and duct ready design make installation even more flexible. It comes with a 10-year limited warranty.