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Passive houses’ energy demand is less than 50% compared to new energy-efficient buildings.
Heat load calculations using Passive House Planning Package for Bergen in Norway and Typical climate in Germany. Dependence of the space heating demand and heat load on South-facing window area.

Low energy demand is a key to a good indoor climate. Thermal comfort, draught free climate, and good air quality due to proper ventilation rate, and acoustical and lighting quality are easy to maintain in a Passive House.

Life-cycle and economic benefits of energy-efficiency are huge. A building built according to passive house standards saves heating energy 75 – 90% compared to present existing buildings. Energy efficiency is also a way to prepare for future energy prices. In this context a passive house is also an investment for the future.

The Passive House Planning Package (PHPP) is an easy-to-use computer tool that allows designs to be verified against the Passive House requirements. The verification requires specific data about the design, materials and components to be entered into the PHPP spreadsheets, as well as adequate climate data. The validity of the result form this process is of course highly dependent upon the validity of the data entered.

A Passive House can be certified, or it can be built of certified products. Passive House certification is based on the commonly accepted certification schemes developed within the Intelligent Energy Europe project Promotion of European Passive Houses.