Applying
tight concrete lining due to energetistic factors, as well as applying tight
window joinery caused the necessity of using air intakes. They are used as the
supplement to the system of ventilation in flats. In spite of such a solution,
there occure some serious problems in functioning of the ventilation. Results
of the studies presented in the article concern all the chosen flats which were
built in the last five years. The flats were equipped with the tight window
joinery and air intakes. The article also emphasizes the need of necessary
changes and studies that have to be conducted in order to gain desired
stabilization of the air circulation.