26 October 2018 Passive House Plus’ Kate de Selincourt: Performance gap much smaller for passive homes, research finds

26 October 2018 by Jason Quinn

This report reviewed detailed test measurements for air tightness and heating loads for passive houses and non-passive houses designed to meet an energy target. From this data the Passive Houses (Passivhaus in the UK) predicted performance matched quite closely to the measurements compared to other non-passive house designed buildings.

“Most of the homes were fitted with mechanical ventilation with heat recovery (MVHR) systems, which would not have been performing efficiently in the 81% of non-passive homes with leakiness worse than 3.0 m3/h/m2, the recommended air permeability limit for installing MVHR, the authors point out.”

“Whole house heat loss in the non-passive dwellings was much more variable, with some even doing better than designed.”

Content by PassiveHousePlus.

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