Electric heating thermal oil heater consists of the main parts (including electric heater host, high-temperature oil pump and Y-shape filter) expansion tank, control cabinet and piping. All the components of the system must work together in harmony for proper performance. Electricity as energy source, covert electric energy into heat energy through flanged immersion heater. The organic heat fluid (hot oil) as heat transfer medium is circulated in the whole system pushed by oil pump. and then the using-heat equipment takes heat from the hot oil, which returns back to the boiler after heat exchange. So it is an organic heat circulation system.

It is a type of indirect heating in which thermal oil as a liquid phase heat transfer medium is heated and circulated to one or more heat energy users within a closed loop system. The electric heating tube is directly inserted into the thermal oil for direct heating. A circulating pump is used to create liquid-phase circulation of heat using equipment, the heat conduction oil will return to the heater via the circulating pump, again to absorb heat, and transfer the heat to the heat using equipment. this process is repeated again and again, realizing continuous transfer of heat. As a result, the temperature of objects being heated rises, and heating requirements are fulfilled.