Dwell Development built this 3,700-square-foot custom home in Seattle, Washington, to the high performance criteria of the U.S. Department of Energy Zero Energy Ready Home (ZERH) program.
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Rows of solar panels line the roof of the west Seattle home helping to bring the already energy-efficient home’s HERS score from a low 35 down to net zero.
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Fiber cement and white oak siding provide a durable cladding for the home.
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ENERGY STAR appliances and EPA WaterSense-certified plumbing fixtures add to energy and water savings.
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A smart home energy management system communicates with the home’s lighting, HVAC, appliances, solar systems, and even car-charging stations so they can be optimized to work together for increased efficiency.
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A solar thermal water heating system provides most of the home’s domestic hot water, while EPA WaterSense-labeled fixtures reduce water usage.
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Triple-pane tilt-turn argon-filled low-E vinyl framed windows allow in daylight but block heat transfer, while the home’s LED-equipped fixtures provide efficient evening lighting.
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The home is heated with in-floor hydronic radiant heating tubes that were installed in the R-20 insulated slab. The hot water is provided by an air-to-water heat pump with an efficiency of COP 3.92.
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The highly efficient wall system consists of two sets of stud walls set side by side to create a 12-inch-thick double-stud wall cavity that is filled with a continuous blanket of R-44 dense-packed cellulose insulation.
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The double walls are sheathed with plywood then covered with a liquid-applied water-resistant barrier that provides a seamless air and water barrier for the walls.
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“The ultimate goal is always net zero.”
– Dwell Development
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“The ultimate goal is always net zero, meaning the home produces the same amount of energy as it consumes, ultimately helping to reduce carbon footprints and energy bills.”