As part of the project a written survey of 104 households in two residential areas in Saxony have been conducted. The project aimed at identifying the influence of the users behaviour on the consumption of gas. Despite of the identically construction of the houses and the same climate conditions, the consumption varied by the factor 3. Data was collected on the intensity of use (number of occupants, periods of attendance, etc.), energy related behaviour and knowledge. The data was analysed with methods of descriptive and inductive statistics.