Navien launches NPN Series at Southern California event Nadia Askar December 10, 2019 The new NPN will be offered in two series, the NPN-U (universal) and NPN-E (exterior), both of which will be available in 160,000 Btu/h, 180,000 Btu/h and 199,900 Btu/h models for either natural gas or liquid propane.Read More
