Rinnai RU180iP 180K BTU Indoor LP Propane Tankless Water Heater

More hot water, faster with the Rinnai Sensei series The Rinnai Sensei series features an enhanced combustion design, to provide a better experience for both users and installers. All key components are manufactured by Rinnai to ensure well-known Rinnai quality. New condensing technology for colder climates You get freeze protection down to -4°F for outdoor units or -22°F for indoor units. The Sensei series achieves this by using:• a new integrated check valve that prevents backflow from outside cold air• a new fiber mesh premix burner• programming that temporarily activates the unit during extremely cold weather Stainless Steel Primary Heat Exchanger Early in the combustion process, all high efficiency condensing tankless water heaters produce condensate. Rinnai's new R-evolution Primary Stainless Steel Heat Exchanger resists corrosion for better performance in the long run. Another leading innovation: Venting The Sensei series offers the most flexible venting options of any t