The load factor refers to the ratio between the average output of an air compressor during a certain period of time and the maximum rated output of the compressor. When the selected air compressor exactly meets the maximum demand of the user, adding one or several tools or having leaks can cause a drop in pressure in the facility. To avoid this situation, it is recommended to use the load factor, which is calculated by taking the maximum value of the air volume required by the user’s system and dividing it by a load factor of 0.9 or 0.8 (or any safety factor determined by the user).