Plenty new features show up the way to the next level of passive house design. (designph.org)
One might also point out that this house is no less boxy than the modern passive house designs we have shown; it is in fact a perfect box. (treehugger.com)
Of course, he says that if he had been able to work from a clean sheet, the buildings would have been oriented south, they would have been two - storey, etc — basic passive house design principles that meant they wouldn't have had to insulate the roof as much as they did. (passivehouseplus.ie)