There are different varieties of furnaces which use different fuels including natural gas, electricity, propane, wood, coal, and others, to produce heat. A gas furnace is an equipment which is used for high temperature heating, which takes natural gas as an input to produce output. Gas furnaces are anticipated to offer a significant efficiency. The fuel efficiency of gas furnaces is measured in Annual Fuel Utilization Efficiency (AFUE). Gas furnaces are used in regions where heating is required to raise the temperature in the winter season to provide warmth to the residents of the region from the low temperature. The different components of gas furnaces includes control board, burners, automatic combination gas valve, heat exchangers, and others. A gas furnace provides different gases which can be used as a fuel in the combustion chamber to produce heat in an efficient manner. The different gases include natural gas which consists of methane and other hydrocarbon gases, liquefied pet...