Abstract <p>A method for calculating the characteristics of the electromagnetic interaction of inductors with reinforced concrete products during thermal treatment with high-frequency currents is presented. A mathematical model is proposed that makes it possible to determine currents, voltages, transmitted power and efficiency for round and rectangular inductors. The model is based on substitution schemes and equations of an alternating current circuit, the model takes into account the influence of resonant capacitances, the frequency of the supply voltage, as well as the presence of reinforcement in concrete. Software modeling was performed in the MATLAB environment, which demonstrated the advantages of resonant circuits for connecting inductors and their effectiveness for reinforced and non-reinforced products. The simulation results confirm the possibility of using the induction method for electrothermal treatment using transistor converters as a power source, providing high efficiency (up to 97–98%). The necessity of experimental verification of the model for further implementation of the technology in practice is noted.</p>