Navien’s all new NPN-U is a premium tankless water heater that utilizes an industry-first stainless steel heat exchanger in the non-condensing tankless market. In addition to durability, NPN-U offers flexibility and ease of installation with the ability to be installed either indoors or outdoors. Available for both residential and commercial applications, the NPN-U comes in three different sizes up to 199,900 Btu and offers an industry-leading warranty. Navien | | Booth #1573