Furnace oil, also known as industrial fuel oil, is a heavy, viscous fuel derived from crude oil, primarily used in industrial furnaces, boilers, and power plants for heating and energy generation. It has a high calorific value, making it ideal for large-scale energy requirements. Due to its high viscosity, furnace oil often needs to be heated before use to ensure smooth combustion. While it is an efficient energy source, it contains higher sulfur levels, which can contribute to pollution, though modern formulations may reduce this. Commonly used in industries for heating systems, power plants, and thermal processes, furnace oil is stored and handled with care to maintain proper flow and combustion. It remains a cost-effective option for industries seeking reliable and substantial energy output.
