The scope of this investigation is to decide how and to what extent the energy consumption of a passive house is affected by the users’ knowledge and habits. To achieve this a literary study has been made and as a complement the planning of a passive house was completed. The result of a primary study of the rules and regulations that effect passive houses in Sweden shows that the user’s influence on passive houses is a completely unregulated area. Even though there is no regulation, a need for some general knowledge of the passive house concept has been expressed. To further investigate how the users’ knowledge and habits affect the energy consumption and if there is a difference between different households’ energy consumption , three main factors have been identified. The factors are as follows:  Indoor-temperature  Hot water consumption  Consumption of electricity for household appliances After the study of factors that influence unwanted user behaviors, different tools that can help to reduce user-related energy consumption has been investigated. As pointed out earlier a need for some knowledge of the passive house concept has been expressed as, if not necessary, at least very useful to the user in a passive house. That knowledge is transferred between builder- buyer, buyer-seller, landlords -tenants during different stages of a passive house’s life. The following means of communication are used:  Meetings  A user’s guide  Interactive – displays  Knowledgeable technicians What concerns the planning of the passive house, the house did not reach the Swedish passive house requirements, but none the less it was an important tool to gain further insight to factors that can affect the energy consumption in a passive house.