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Building America DOE Challenge Home Case Study, Dwell Development, Seattle, WA, Systems Home

Case-study of a DOE Challenge Home in Seattle, WA, that scored HERS 34 without PV. This 2,000 ft2 system home has R-45 double-stud walls, an unvented flat roof with 2 inches of spray foam plus 18 inches blown cellulose, R-42 XPS under slab, triple-pane windows, and a ductless mini-split heat pump.