Practices

Post occupancy evaluation of certified Passivhaus homes in the UK

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The performance of Passivhaus in new construction: Post occupancy evaluation of certified Passivhaus dwellings in the UK: Early Results 

 

This paper published by the Passivhaus Trust, the UK Passive House Organisation, analyses the performance of a number of certified Passivhaus dwellings in the UK. The research is focused on certified new-build Passivhaus homes, both single dwellings and multi residential.

 

The aim of the study is to collect data from a statistically significant sample of homes (over 100 dwellings) and test for the existence of a performance gap for winter heating demand and summer overheating. The hypothesis tested is that homes built to the certified Passivhaus standard in the UK will not suffer a performance gap for space heating demand and summer overheating.

 

The objectives are:

 

  • to collect post occupancy hourly data for internal and external temperatures and annual space heating demand from 100 + homes certified to the Passivhaus standard;
  • to normalise the data using a methodology from the EU CEPHEUS project (which has looked at the performance of Passivhaus buildings across continental Europe) allowing for comparison across both the national projects and with CEPHEUS;
  • to analyse the data for evidence of a performance gap for heating demand and summer overheating.

One key finding of the research is that the Passivhaus dwellings perform exactly as expected in terms of space heating demand.

 

To download the paper, please click on the link  provided below.