Abstract: This study includes a discussion of the importance of experimental research to determine the Termal-Physical Properties (TPP) of the object studied. It was conducted an analytical review of modern methods for determination of the thermal-physical properties of building facilities. There are analyzed the limitations of the methods for determination of the TPP of the object studied, described in this article. Here is given a description of the principle of plant operation, designed to determine the TPP (heat transfer coefficient, heat transfer resistance and specific thermal performance) of the object studied by the non-destructive testing method and its main components. There are presented the necessary formulas for calculating the TPP of the object studied. There are described the basic advantages of the developed plant, in comparison with the well-known analogues.