Authors of this article presents the results of experimental research of the temperature potential of ventilation emissions in apartment buildings in Moscow. Also this paper offers an analysis and synthesis of technological schemes and technical solutions for natural ventilation systems used in apartment buildings. The systems of natural ventilation of lower-cost multi-storey buildings have been analyzed. The influence of various factors on the parameters of operating modes of natural ventilation systems have been also analyzed. As a result of the analyses it has been found, that the operated apartment buildings largely do not ensure air exchange required according to sanitary regulations, which results in adverse effects for the health, efficiency and life expectancy of population.