In a Passive House, all rooms enclosed by the thermal envelope are ventilated by a ventilation system with heat recovery capacity while also ensuring healthy air circulation. The energy used by this type of ventilation system is minimal in comparison to conventional climate control systems. While on the subject of power usage, the emphasis on utilising renewable energy sources within the Passive House concept implies the specification of energy efficient electrical appliances.
Finally, from the southern hemisphere point of view, Passive Houses favour positioning large, glazed areas on the North side of the building, and glazed areas on the West and East sides of buildings fitted with appropriate sun protection to control solar load in warmer months. This is of course, a very simplified explanation of the components used by the PHPP tool to calculate and optimise energy efficiency standards integral to the Passive House concept. But the detail and accuracy with which these simple principles can be employed to enhance both the high levels of sustainability and living environment in building standards is impressive.