The paper deals with the energy efficiency of residential buildings. It describes the basic criteria for evaluating energy efficiency of residential buildings. It reviewes basic technological and engineering resources solving problems of energy efficiency. Particular attention is paid to the comprehensive measures to ensure the buildings high-class energy efficiency.

Keywords: energy efficiency, design, heating, water, electricity, construction, heat loss, air conditioning, heat transfer agent

This article addresses the energy efficiency of heating systems. It describes the main requirements for modern heating networks. Reviews the main technological and engineering problem-solving tools of energy efficiency. Particular attention is paid to the comprehensive modernization of the old heating system. Offers cost-effective ways of redistribution of funds in the planning of operational costs and maintenance.

Keywords: energy efficiency, heating systems, thermal circuit, heating, water treatment, reconstruction

This article addresses the energy efficiency of heating water boilers that produce energy required for heating, ventilation and hot water. We review the main technological and engineering problem-solving tools of energy efficiency. An integrated approach to the selection of the main and auxiliary process equipment described in this article can significantly improve the energy efficiency of the boiler as a whole.

Keywords: energy efficiency, boiler, thermal circuit, heat, water treatment