A preheater is a device that is used to heat materials, equipment or substances before they are further processed or used. Some common synonyms for preheater include heating element, warmer, heater, reheater, and warming device. Other synonyms for the term are preheating furnace, warming facility, preheating apparatus, and warm-up machine. These synonyms all describe different types of devices that increase the temperature of an object or substance before it is used in subsequent processes, making it easier and more efficient to work with. In industries such as manufacturing or food processing, preheaters are a vital component to ensure high quality and efficient production.