Natural Current NCS220WE2HTR Savior Floating Electric Water Heater, 220-watt Electric Water Heater 220-watt 24 volt Solar Powered is a low voltage submersible water heater Water temperature depends on water size and outside condition with the Savior Heater Floating Electric Water Heater 120-watt Solar Powered Make emergency hot water with the Savior Heater Floating Electric Water Heater 120-watt Solar Powered Awarded multiple international Best Product and Best Green Product at the Pool and Spa Industry Expos Designed in Dana Point, California by Michael Evingham (H.M.D.G.) Natural Current - Planet, People and then Profit; Made in the U.S.A