Passive House is a voluntary international building standard developed by the Passive House Institute (PHI), located in Darmstadt, Germany. The Passive House Standard is comprised of several strict performance requirements for new building construction including:
air sealing standards [.6ACH50]
heating/cooling energy restrictions [4.75kbtu/sf/yr]
total energy [38kbtu/sf/yr]
For the renovation of existing buildings, PHI developed a similar, slightly more lenient performance standard. The resulting performance produces approximately a 90% reduction in heating and cooling energy usage and up to a 75% reduction in primary energy usage compared to homes built to conventional building code.
Globally there are numbers of institutions and organisations which are tackling various aspects of building science and contribute to lowering our energy needs and carbon emissions. phME supports all contributions to the collective advancement of building science and energy/carbon reduction in our built environment.