Navien’s new NPE Series premium gas condensing tankless water heater features advanced technology that revolutionizes installation and helps increase profitability for contractors. The new NPE Series greatly reduces time and labor for a typical tankless retrofit by utilizing existing gas lines and existing flue chases. Features of the NPE series include: 2” PVC venting up to 60’; 1/2” gas lines up to 24’; ComfortFlow technology; buffer tank and recirculation pump included; field convertibility from natural gas to liquid propane gas; cascading-capable; dual stainless-steel heat exchangers; ultra-condensing efficiency; and ultra-low NOx emissions.