A heating assembly designed for reducing foodborne pathogens in bagged food products comprises a heat insulated treatment chamber, multiple high temperature natural gas fired furnaces, multiple insulated ductworks further comprising multiple sets of intake ducts and multiple sets of exhaust ducts, a cooling system that allows air to be controlled and supplied into the treatment chamber, multiple temperature sensor probes placed in the treatment chamber, the natural gas fired furnaces, and the bagged food products, a digital control system, and a computer program that monitors the temperature of each probe. A specially designed racking system with multiple levels allows multiple dry bags containing the food products to be stacked in a manner that rapidly and uniformly heat the food products.
