Passive house definition
Passive House is not only one of the world’s leading energy efficiency standards but also a construction concept made to build comfortable, environmentally friendly and affordable homes and buildings.
What is the requirements for passive house?
A building must meet several criteria to achieve the passive house standard:
- Space heating: The energy demand for space heating must not exceed 15 kWh/m2 of living space per year or 10W/m2 at peak demand. This contrasts with the 100W/m2 needed in a typical house.
- Primary energy: Total energy needed for all domestic applications (heating, hot water and domestic electricity) must not exceed 60 kWh/m2of living space per year.
- Airtightness: Passive buildings are very airtight and should have no more than 0.6 air changes per hour at 50 pascals of pressure.
- Thermal comfort: Living areas should be comfortable all year round, with no more than 10 percent of the hours in a given year exceeding 25°C.