The thesis presents a solution for the heating system of a family house located in Vinkovci. The area of the living space is 212.75 , which consists of the ground floor. The technical drawing shows the family house and the layout of the rooms in it. The introductory part of the paper consists of stating the general features of heating with an emphasis on the characteristics of central heating. After the introduction, the calculation of the heat load according to the HRN EN 12831 standard was presented. Using the mentioned standard, the problem for a family house was worked out and the heat loads of individual heated rooms (zones) were calculated. By analyzing the influence of different temperature regimes, the temperature regime 55/45 °C was chosen. After creating the budget, the dimensioning of the system was started and the selection of the necessary equipment for the installation of heating and domestic hot water. Radiator heating was chosen for the heating system of the family house. Calculations and technical drawings show the selection of radiators and their location in the family home. A gas combined condensing boiler with a nominal heat output of 19 kW was chosen as the design solution. The volume of the selected DHW tank is 120 l. The gas connection solution for the needs of a gas condensing boiler is presented. The annual required thermal energy for heating is described using the HRN EN ISO 13790 standard.