E2 Homes, LLC, built this 3,912-square-foot home in Maitland, Florida, to the performance criteria of the U.S. Department of Energy Zero Energy Ready Home (ZERH) program.
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Concrete and pervious stone replace lawn for minimal water use and low-maintenance landscaping.
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All of the interior and exterior lamps are energy-efficient light emitting diode (LED) lighting.
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Board-form concrete walls are insulated along the inside with rigid foam providing an insulation value of R-19, while the unvented roof is insulated on the underside with R-21 of spray foam.
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Durable concrete walls, thermoplastic polyolefin (TPO) roofing, protective overhangs, and pervious stone ground cover all increase the home’s resistance to tropical storms.
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Deep overhangs protect most of the windows from direct overhead sun while low-emissivity coatings on the glass help block heat transmission into the interiors.
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A 10-kW photovoltaic electric generating system installed on the roof helps save homeowners an estimated $2,850 in energy bills annually compared to a home built to code.
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The home was equipped with a high-efficiency ENERGY STAR refrigerator and dishwasher for energy and water savings.
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All interior lamps are energy-efficient light emitting diode (LED) lighting.
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The home meets the requirements of the U.S. Environmental Protection Agency’s Indoor airPLUS certification including the use of structural wood products, primer, paint, cabinets, and flooring that emit no or few air contaminants.
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The home’s geothermal heating and cooling system uses the moderate temperatures below ground to provide very efficient space conditioning at a cooling energy efficiency ratio (EER) of 26.7.
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The home was equipped with water-saving, efficient plumbing fixtures.
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The home’s geothermal heat pump uses heat removed from the home to preheat domestic hot water, which is further heated by a heat pump water heater.
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An ultra-efficient geothermal heat pump heats and cools the home and preheats water for the heat pump water heater.
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The interior basement walls are insulated with rigid foam to contribute to a continuous thermal blanket around the home.
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Spray foam air-seals and insulates the underside of the roof deck providing a conditioned space for the home’s HVAC ducts.