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Celebration Green Design and Build built this 3,400-square-foot custom home in Guilford, Connecticut, to the high performance criteria of the U.S. Department of Energy Zero Energy Ready Home (ZERH) program.
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Celebration Green Design and Build
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This home in rural Connecticut was built to be a true zero energy performer with high energy efficiency and a 12.6-kW photovoltaic system.
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Celebration Green Design and Build
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ENERGY STAR appliances add to water and energy savings.
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Celebration Green Design and Build
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All of the home’s faucets are EPA WaterSense rated for water savings.
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Celebration Green Design and Build
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An advanced ground-source heat pump comfort system provides heating and cooling to the home.
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Celebration Green Design and Build
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The home’s exterior walls consist of two 2-by-4 walls. The interior face of the exterior wall is completely covered with 2 inches of closed-cell spray foam, then the double wall cavity is filled with dense-packed cellulose for a continuous R-49 blanket of wall insulation.
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Celebration Green Design and Build
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The attic is wrapped in a 3-inch blanket of closed-cell foam sprayed on the underside of the roof deck. The rafter bays were further filled with high-density fiberglass batts.
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Celebration Green Design and Build
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Air-sealing tape carefully seals the seams around the window framing.
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Celebration Green Design and Build
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Every seam in the plywood was taped before installing house wrap to improve the home’s airtightness.
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Celebration Green Design and Build
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An energy recovery ventilator fresh air system provides filtered fresh air to every room in the house.
Credit
Celebration Green Design and Build
Photo

Caption
Celebration Green Design and Build built this 3,400-square-foot custom home in Guilford, Connecticut, to the high performance criteria of the U.S. Department of Energy Zero Energy Ready Home (ZERH) program.
Credit
Celebration Green Design and Build
Celebration Green Design and Build built this 3,400-square-foot custom home in Guilford, Connecticut, to the high performance criteria of the U.S. Department of Energy Zero Energy Ready Home (ZERH) program.
Celebration Green Design and Build
May 13, 2025