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Passive House Basics - the passive house design is predicated on having an airtight, super-insulated building envelope. Then you add big windows facing south to allow the sun to warm a large interior wall (or thermal mass they call it). The wall will hold heat for winter time comfort. For summer time you add a screening / shading system for those windows, preferably outside with an open air space between window and shade.

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Here's How To Make Sure Your Home Is Never Cold Again

Heres How To Make Sure Your Drafty Home Is Never Cold Again -- Temporary pelmet from foamboard? cardboard or luan with batting wrapped in complementary fabric?

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Façade consists of translucent polycarbonate hangar doors that fold horizontally. Loblolly House, Kieran Timberlake Associates

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Homemade Thermal Window Shades

Simple, money-saving thermal window shades made from insulated fabric with Velcro edging keeps temperatures moderate and eliminates window heat waste.

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