RE160iN is the perfect combination of high efficiency, comfort and value in a natural gas non- condensing tankless water heater from Rinnai. Ideal for small to medium homes or remodels. Only the size of a small suitcase, is easy-to-install, reliable, and perfect for indoor locations; Rinnai products provide peace of mind with warranties that surpass the competition.Uniform Energy Factor: 0.81Warranty 15 yr Heat Exchanger / 5 yr Parts / 1 yr Labor10,400 BTU (minimum)160,000 BTU (maximum)Indoor