FD Fans are primarily designed for providing the essential amount of hot air to the furnace. In this way, these provide smooth as well as unvarying combustion of fuel. These provide positive pressure inside the system. FD Fans are the energy-efficient solutions, which make efficient use of air. These special types of fans deliver pressurized air to the system. In the operation of a Steam Boiler Assembly, these provide a great importance. Basically, these are demanded in the industries, where operation of boiler systems is of vital importance. These assist in promoting the boiler efficiency and find uses in other applications.