Innovative EPC Indicator

Outdoor Air Pollution

Air pollution is one of the most important environmental risks to human health, and it is perceived as the second biggest environmental concern for Europeans after climate change. It has been estimated that 90% of population worldwide are breathing highly polluted air. The indoor and ambient air pollution are recognised as one of the risk factors for non-communicable diseases. Buildings both affect the quality of the outside air (pollutant emission) and the purity of the indoor air (air filtration).

X-tendo elaborates and tests a methodology for reporting on the buildings’ contribution to air pollution as well as the air-filtration efficiency in ventilation systems. The methodology for estimating the Local Air Pollution Contributor Index is based on comparisons between pollutant emissions values from assessed buildings and from reference ones. In the methodology for determining the Indoor Air Purity Index, the actual quality of external air and efficiency of air filtration system is taken into account.

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  • Introductory report

    Brief report giving an overall evaluation of the feature and describing the basic concept, the methods behind, existing good practices and how to implement it.

Methodological approaches
Calculation procedures
  • User guide and calculation tool for the indoor air purity index

    This material consists of the Excel spreadsheets and user guide for the indoor air purity index. The proposed method considers outside air quality and indoor air purity in the building with a ventilation system equipped with an air filter. This method indicates that buildings located in the area with high outdoor air pollution require higher air filtration system efficiency to get the same air purity inside the building as in the cases of location with low outdoor air pollution.

  • User guide and calculation tool for the local air pollution contributor index

    This material consists of the Excel spreadsheets and user guide for the local air pollution contributor index. The proposed method considers fossil fuel used in the building for heat and electricity generation for the functions included in the national EPC system. In the local air pollution contributor index assessment method, the calculated building emissions will be compared with reference emission and for each pollutant, an index level will be assigned. Using the amount of building energy use and the type of the building energy source , the building emission indicators are calculated. Next, the reference emission indicators are calculated using reference delivered energy and reference energy sources. The reference values will be estimated based on national regulations. Using calculated values, the ratio of building to reference emission indicators will be calculated. The ratio of leading pollutant will be assessed using a scale of indexes. The indexes show what the building impact on outdoor air pollution in comparison with reference values is.

  • Concrete implementation of new energy performance certificates features: testing and results in nine countries

    This report provides the summary of the outcomes of the testing activities for each of the 10 features in one or several implementing countries. This is mainly based on the analysis of the evaluation questionnaires filled out by the implementing partners, but also on the content of the testing results reports. The questionnaires hereby consist of general questions along the testing steps, questions on testing time and related costs, an evaluation against defined cross-cutting criteria (Quality and Reliability, User-friendliness, Economic feasibility, and Consistency with ISO/CEN standards) and final thoughts.

Recommendations for Implementation
  • Implementation guideline and replicability potential of the innovative feature for the next generation EPCs

    This report brings together the outputs of the evaluation of the test projects alongside the insight from end-users and stakeholders. It includes estimations of (1) the barriers and drivers for the wide uptake of the feature, (2) the effects of the wider implementation of the developed innovative feature of EPCs in Europe and (3) the necessary next steps in order to implement the innovative feature in the certification schemes around Europe.

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