Takagi Takagi 10 GPM Condensing Indoor Natural Gas Tankless Water Heater with Energy Star Rating

Features: Commercial grade copper alloy on the primary heat exchanger offers superior heat transfer then stainless steelSecondary heat exchanger uses stainless steel for better corrosion resistanceUltra-Low NOx compliantNSF certified for commercial applicationsBuilt-in safety features such as freeze, overheat, surge protection and moreEnergy Star rated for increased power efficiencyDesigned for indoor use onlyFive year parts warranty, five year commercial heat exchanger and 15 year residential heat excha...