Introductory Course of Building Services is focused on sanitary installations, gas supply system and heating systems. Sanitary installations - introduction, hydraulic pipes, water supply facilities, balance water needs. Internal water supply systems - installation, materials, calculation, waste water and disposal, sewage systems, internal drainage, types of fixtures. Gas - external pipelines, connections, balance of gas, internal pipeline systems, flue gas. Central heating and design of heating surfaces. Calculation of heat balance. Heating system. Preparation of hot water. Heat sources - boiler, electric heating, district heating, renewable sources.