An electric oil heater is designed to heat the oil to give it the necessary technological properties. Various liquids (various refined products, oils, alkalis and acids, water) can be used as the heating object for this type of heater. The heater can be used in various industries: oil and gas production and processing facilities, petrochemical and chemical production, thermal power plants, and other industries. The design of the heater ensures its operation in the open air in areas with seismic activity up to 8 points on a 12-point scale. The climatic version of the heater is in category 1 in accordance with ГОСТ 15150-69, the ambient temperature is not lower than minus 30 ° C. Possibility to manufacture a heater with a capacity of up to 360 kW according to individual technical specifications.