EnerPHit and EnerPHit+i Certification Criteria for Energy Retrofits with Passive House Components

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  • 15 November 2014 Create Date
  • 25 September 2019 Last Updated

If an energy retrofit of an existing building meets Passive House criteria (for new builds), it,
too, can be certified as a Certified Passive House.
It is, however, often difficult to feasibly achieve the Passive House Standard in older
buildings for a variety of reasons. Passive House technology for relevant building
components in such buildings does, nevertheless, lead to considerable improvements with
respect to thermal comfort, structural longevity, cost-effectiveness over the building lifecycle
and energy use.
Buildings that have been retrofitted with Passive House components and, to a great extent,
with exterior wall insulation can achieve EnerPHit certification as evidence of both building
quality and fulfilment of specific energy values. The EnerPHit+i designation is applied if
more than 25 % of the opaque exterior wall surface has interior insulation.
The certification criteria for both standards are described below


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EnerPHit and EnerPHit+i Certification Criteria for Energy Retrofits with Passive House Components