The ClearFire-CE (CFC-E) condensing boiler features AluFer firetube heat exchanger and dual temperature returns that can increase condensing in a hot water boiler. The product design makes it easy for engineers to incorporate it into a retrofit design or a new construction project. A low emissions premix burner is built into the product, allowing it to automatically adjust for combustion air density changes. Constructed of duplex stainless steel, the product performs well in hydronic systems with a variety of design temperatures. All of the boiler’s components are fully integrated, pre-programmed and factory-tested for plug-and-play operation.