The Ferrite Company, Inc. has shown interest in minimizing the time required for efficient microwave heating in industrial applications by regulating power supplied to the system. We aim to model this situation in 1-, 2-, and 3-dimensional formulations, solving analytically and numerically the two-way coupled system of differential equations governing electromagnetic power and heat diffusion, and to investigate the feasibility of the use of a pulsing power source in order to optimize efficiency of microwave heating systems.