Rinnai REU-V2532WD-91-N R85eN Plus 6.5 GPM Natural Gas Outdoor Tankless Water Heater with FREE Deluxe Controller RINNAI R85eN PLUS NATURAL GAS TANKLESS WATER HEATER Temperature controlled, continuous flow, gas hot water system Direct electronic ignition Temperature range: 98F to 140F Ten-year heat exchanger / five-year parts / one-year labor warranty