The crossword solution for the term 'Heater Component' is 'COIL'. A COIL is a type of electrical component that is used to convert electrical energy into heat energy. It is typically made up of a series of wires wound around a core, and when electricity passes through the COIL, it creates a magnetic field which produces heat. Coils are commonly used in heating systems, such as water heaters, space heaters, and furnaces.