passive house on white paper

background passive house white paper airtightness architecture building carbon certification climate comfort compliance construction cost design durability efficiency emissions energy envelope environment evaluation glass heat heating home hvac implementation indoor-air-quality insulation integration investment low-carbon low-energy materials mechanical-ventilation net-zero occupants optimization passive-house-certified passive-solar performance phpp planning package renewable retrofit roof savings sealing self-sufficiency shading simulation standards strategy structure sustainability thermal-bridging thermal-comfort thermal-mass tightness u-value ventilation verification wall water weatherproofing windows winter wood zero-carbon zero-energy zoning zeb zero