Navien, the leader in condensing technology, has started shipping their latest innovation, the NPF Hydro-furnace. First announced during their virtual launch event on September 26th, the NPF forced air hydro-furnace is Navien’s introduction into the HVAC market. Available in upflow and horizontal configurations, the NPF comes in two sizes of 60,000 BTU/h and 100,000 BTU/h Read more