Pogran Š., Reichstadterová T., Lendelová J., Páleš D., Bieda W., Bošanský M., 2013. Verifi cation of agroproduction building structures aff ecting the quality of indoor environment in the summer season. Res. Agr. Eng., 59 (Special Issue): S54-S59.Th is contribution focuses on the evaluation of the eff ect of aerated concrete external wall of a hall falling within the category of special-purpose agricultural buildings in terms of the phase shift of temperature oscillation. Th e assessment was performed by precise and approximate calculation procedures and was then compared with the results obtained from the values actually measured under the operating conditions. Th e building energy balance is aff ected by diff erent thermo-physical phenomena generated by the interaction between solar radiation and diff erent parts of the building envelope. Th ese components should be closely linked with a unifi ed aim to provide an improvement on the energy balance of the building (Fuliotto et al. 2010). Internal air temperature is infl uenced by variations in outdoor conditions such as temperature, solar radiation or meteorological situation. Other important parameters are wall overall heat transfer coeffi cient, internal heat gains or losses caused by devices such as lighting, occupancy, etc. Many articles related to this topic are focused on energy storage using heat accumulation in purpose-designed structures (Khudhair, Farid 2004;Heim 2010). At the present time, the phase shift of temperature oscillation is a lack in understanding thermal characteristic of buildings, which can present the semblance of a considerable infl uence on the thermal comfort of interior users during the summer period. Th e surface of the building envelope is heated by exposure to the increased external air temperature or direct sunlight, and at the same time the increased temperature from the surface is gradually spread towards the interior. Heat conduction occurs due to the exchange of energy Vol. 59, 2013 (Special Issue): S54-S59 Res. Agr. Eng.