The method to determine dynamic characteristics of an object according to a performed experiment is presented. The so-called area method makes it possible to computerize the procedure, and parametric optimization is used to correct the obtained transfer function. All the procedures may be carried out by a controller of the heating system of a smart home. When ambient temperature and other conditions change, the transfer function of a controlled object may be automatically adjusted recalculating the parameters of a system controller for optimal usage of heat and electric energy.