Mechanical draft refers to the process of using fans or blowers to create airflow in a heating or cooling system. This method helps to control the movement of air, ensuring that it circulates efficiently throughout a building. Mechanical draft systems are commonly used in furnaces, boilers, and ventilation systems to enhance performance and maintain comfortable indoor temperatures. In contrast to natural draft, which relies on temperature differences to move air, mechanical draft provides a more consistent and controllable airflow. This is particularly important in industrial applications, where precise temperature and pressure control are necessary for optimal operation.