Chapter One – What is a Furnace? A furnace is an industrial apparatus engineered to provide direct electric or fired heat for applications needing temperatures exceeding 752°F (400°C). Many industrial operations require this level of heating to process materials for production or complete certain tasks. The durability and reliability of electric and fired furnaces ensure precise temperature management and consistent performance, which are critical for efficient and successful ... Find here online price details of companies selling Heating Furnace. Get info of suppliers, manufacturers, exporters, traders of Heating Furnace for buying in India. Buying a furnace can be a lot more complicated than it first seems. Not only are furnaces often divided into the three most popular fuel types (electric, natural gas, and propane), but there are literally dozens of different designs and features. Even more confusing (and fascinating) are the many alternative fuel types and industrial-grade furnace types out there. Learn about different types of furnaces, such as natural gas, oil, electric, propane, and wood burning, and how they work. Download a PDF file with pictures and examples of each type of furnace.