The project consists of the thermal modernisation of four residential municipal buildings owned by the Municipality Pruszcz Gdański, located in Straszyn on the street: Walk 5, Walk 7, Walk 24 and Oldgarde 30. The following types of action are planned: • warming of external, cellar and foundation walls, • warming of ceilings, stropodache, roofs, • window replacement, • replacement of external doors, • modernisation of central and central heating installations together with heat exchange. The aim of the project is to improve the energy efficiency of municipal housing buildings in Pruszcz Gdański Municipality. The task will result in reduction of final energy consumption, reduction of local emissions of harmful substances into the atmosphere and high savings in the operation of facilities. Implementation of the task will reduce the demand for heat for heating of buildings (c.o.) and the demand for energy for the preparation of hot water by approx. IT’S 78 %.