Bosch RP17PT Whole House Electric Tankless Water Heater ( U.S.) 240 Volts, 80 (2×40) amps, 17.25 KWh PRODUCT DETAILS Bosch RP17PT Whole House Electric Tankless Water Heater Designed to replace a 40-gallon electric tank. Max Flowrate: 2.6 GPM The compact and powerful RP17PT & RP27PT electric whole house tankless water heaters can be installed virtually anywhere inside the home. They are 90+% efficient with zero stand-by loss and have a built-in flow sensor that ensures a constant output temperature. The RP17PT Powerstream Pro electric tankless water heater is built to last. It has solid cooper heat exchangers and brass fittings. A thermal cut-out switch provides an excellent safety measure to prevent overheating. This small unit can be installed virtually anywhere in the home and, of course, produce an endless supply of hot water. Over 90% efficiency rating Compact and lightweight Electronic flow switch Flow sensor provides a constant output temperature Filter screen on inlet External temperature control Note: RP17PT is not reccommended in climates where average annual ground water temperature is less than 60oF.