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Evaluation of Heating Surveys provided by co2online Target Groups and Buildings, Customer Satisfaction and Impact of the Instrument

The Institute for Ecological Economy Research (IÖW) has evaluated the impact of so called heating surveys povided by co2online. co2online compile such surveys based on a short questionaire and the last heat cost billing. They inlcude an estimation of the buildings energy performance and dependent on the results recommendations for energy-efficient refurbishment. In 2010 a houselhold survey was conducted to evaluation whether an which energy-saving measures were initiated. Rougly one third of all dwellings in the survey were modernized including low-investive measures as hydraulic alignment and high-investive measure as facade insulation.