What is Passive House?
Passive House is fundamentally about design. It is best approached as an integrated design process with the whole design team involved. As a fabric-first construction standard summarised by 5 design principles and performance criteria, it ensures a design delivers very high performance and comfort for the lifetime of the building, pluging the “Performance Gap” often experienced in building operations.
It relies on building physics and carefully integrated, minimal building services and technology. By eliminating the need to bolt expensive additional technology onto a poorly performing building, it eliminates the risk of bolt-on green-bling compromising the architecture
What are the Passive House benefits?
Special windows and a building shell consisting of highly insulated exterior walls, roof and floor slab keep the desired warmth in the house – or undesirable heat out.
Passive House buildings allow for energy savings of up to 90% compared with typical existing buildings and over 75% compared with average new best-practice constructions. Similar energy savings have been demonstrated in warm climates where buildings require more energy for cooling than for heating.
Passive House buildings are also praised for their high level of comfort. They use energy sources inside the building such as the body heat from the residents or solar heat entering the building – making heating a lot easier.
A ventilation system consistently supplies fresh air making for superior air quality without causing any unpleasant draughts. A highly efficient heat recovery unit allows for the heat contained in the exhaust air to be re-used.