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Title: DOE Zero Energy Ready Home Case Study: Healthy Efficient Homes - Spirit Lake, Iowa

This case study describes a DOE Zero Energy Ready Home in Spirit Lake, Iowa, that scored HERS 41 without PV and HERS 28 with PV. This 3,048 ft2 custom home has advanced framed walls filled with 1.5 inches closed-cell spray foam, a vented attic with spray foam-sealed top plates and blown fiberglass over the ceiling deck. R-23 basement walls are ICF plus two 2-inch layers of EPS. The house also has a mini-split heat pump, fresh air fan intake, and a solar hot water heater.
Publication Date:
OSTI Identifier:
Report Number(s):
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B) (Building America)
Country of Publication:
United States
DOE Zero Energy Ready Home; Building America; cold climate zone; builder; residential; construction; energy efficient; spray foam; ICFs; solar water heater; mini-split heat pump