The purpose of this work is to develop a year-round energy-efficient air conditioning system for the temple complex, that meets modern engineering requirements and standards. And it should not violate the traditional appearance of an Orthodox church.In this article there are considered the requirements and standards for the construction of the temple complex together with the architectural solution and the geographical location of the construction entity. The proposed air conditioning system (ACS) with a pneumohydraulic diagram and design modes is described. This system is valid for the summer and winter seasons. The main element of the ACS of the temple complex is an array of heat pipes. The efficiency of the installation is achieved, first of all, due to the recovery of soil heat in the annual cycle. In addition, efficiency is increased by utilizing the heat of the waste air stream and indoor recirculation systems. The article represents a constructive solution for the proposed heat pipe and its design modes of operation in the summer and winter periods together with the expected technical characteristics in different modes of operation, as well as design options for the upper heat exchanger. There is given the concept of the arrangement of the elements of the pneumohydraulic diagram on the cartographic plan of the building and their mutual correlation with the intensity of the operating mode for the soil. And the last, but not least, the article represents a simulation of the annual soil regime, calculated by the finite element method, performed in the ANSYS computational environment.