DOE Tour of Zero: Howell Street by TC Legend Homes
Photos
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TC Legend Homes built this 788-square-foot accessory dwelling unit behind the homeowners’ existing house in Seattle, Washington, to the performance criteria of the DOE Energy Zero Energy Ready Home (ZERH) program.
Photo courtesy of TC Legend Homes
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The walls of this house are constructed using 6-inch structurally insulated panels with an insulation value of R-29. The seams of the panels are taped, and the cement board siding is caulked at all seams to prevent air leaks.
Photo courtesy of TC Legend Homes
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The triple-paned, vinyl-framed windows offer exceptional insulating values.
Photo courtesy of TC Legend Homes
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The 10-inch-thick SIP panel roof is fully covered with ice-and-water shield and offers a complete thermal, air, and water barrier to protect the home from the elements.
Photo courtesy of TC Legend Homes
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For increased energy savings, this home has ENERGY STAR appliances, advanced LED lighting, and water-saving plumbing.
Photo courtesy of TC Legend Homes
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Clerestory windows fill the home with daylight.
Photo courtesy of TC Legend Homes
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The entire home’s heating and cooling needs are met by one ductless mini-split air-source heat pump.