26 Sep '11, 10am

Passive Houses require less than 15 kWh/(m²yr) for heating or cooling (relative to the living space). via @AddThis

Passive Houses allow for energy savings of up to 90% compared with typical central European buildings, and over 75% compared with average new constructions. In terms of heating oil, Passive Houses use less than 1.5 litres per square meter of living space per year – far less than typical low-energy buildings. Similar energy savings have been demonstrated in warm climates where buildings require more energy for cooling than for heating. Passive Houses are also praised for their high level of comfort. They use energy sources inside the building such as body heat from the residents or solar heat within the building – making heating a lot easier. Special windows, entry doors and a building shell designed as highly insulated exterior walls, roof, and floor slabs keep the desirable warmth in the house – or undesirable heat out. A ventilation system consistently supplies fresh air...

Full article: http://greenharmonyhome.com/ph_design.php#.ToBY8aRc-ew.tw...

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