Heaters and Coolers are used in applications which only one process fluid is heated or cooled, and a heat transfer media (heating or cooling) is not available.
Fired heaters are used to heat process fluids by combustion of a fuel. These typically include applications such as thermal fluid heating, process gas and liquid heating.
EconoCool coolers and Air Coolers are self contained heat exchangers which cool the process fluid using either air or air and water to cool the fluid.