article is devoted to a question of calculation of non-stationary temperatures in cracks of residential buildings with application of numerical methods. Special attention is paid to the causes of cracks in the houses which are in the earned additionally territories of the miner's cities. By means of the program and element system of numerical modeling ANSYS the picture of distribution of cracks on a building facade is shown. The analytical method of calculation of non-stationary air temperatures consisting in application of projective methods of Galerkin is developed for cracks. Establishment of a profile of temperature and speed of air was result of a research on the basis of what it is possible to draw a conclusion that in the presence of cracks in external walls of buildings considerable indignations of the temperature field which are localized near a crack take place, and the sizes of area of distortion are defined by the sizes of the crack.

Keywords: nonstationary temperatures, numerical modeling, crack, uneven sediment, convection, thermal inertia, thermal conductivity, temperature profile, Galerkin method, dimensionless temperature