A Burner Assembly For Furance a fuel to produce heat. The heat is then transferred to the air or water that flows through the furnace, which is used to heat a building or industrial facility.A high efficiency furnace main burner is located at the bottom of the unit and is responsible for heating the air that is circulated throughout the building by the furnace's blower. Burners typically have adjustable settings that allow the user to control the amount of fuel that is burned, which can affect the furnace's efficiency and the amount of heat produced. Some burners also have automatic controls that can adjust the fuel flow based on the temperature of the air or water flowing through the furnace.A high efficiency furnace main burner also plays a vital role in maintaining the safety of the system. They are designed in a way such that they can cut off the fuel supply automatically in the event of any abnormal conditions such as overheating, low pressure, etc.