A heat exchanger isn’t necessary in an electric furnace, which doesn’t burn anything. But every gas- and oil-burning furnace must have one. John Gabrielli, owner of Air Temp Solutions ...

Made from an aluminum alloy using a Laser Powder Bed Fusion (LPBF) machine, the heat exchanger is intended to cool transmission oil on military helicopters by using fuel as the coolant.

These heaters run on fossil fuels, natural gas, propane, or oil to create heat through ... combustion is captured by a metal heating element called a heat exchanger inside the furnace," explains ...