Under forced draft refers to a process that involves using mechanical means to induce air or gas flow into a furnace, boiler or other combustible fuel system. Some synonyms for this term include pressure-fired, mechanically aspirated or fan-assisted. These words all suggest a system that is designed to produce a controlled and efficient burn by forcing air or fuel into the combustion chamber. Forced draft systems are often used in industrial settings where high heat output is required, and they offer several benefits such as improved thermal efficiency, reduced emissions, and enhanced safety. Overall, the use of synonyms for the term under forced draft helps create a better understanding of the technical language used in the industry.