DOE Tour of Zero: Double ZeroHouse 3.0 by KB Home
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KB Home built this 2,612-square-foot home in El Dorado Hills, California, to the performance criteria of the U.S. Department of Energy Zero Energy Ready Home (ZERH) program.
The DoubleZero House 3.0 by KB Home is projected to have zero energy bills thanks to high-efficiency construction and rooftop solar electric panels. It will also use zero city water for irrigation thanks to an on-site water recycling system that collects shower and sink water for irrigation.
The home’s 7.0-kW solar electric power offsets all of the home’s electricity needs and includes an integrated energy storage system with the ability to provide backup power for critical loads during power outages.
Water-efficient landscaping practices minimize irrigation needs.
The home is equipped with 100% ultra-efficient LED lighting with a lighting control system that allows the homeowner to adjust lighting remotely from any Internet-connected device.
The high-efficiency ENERGY STAR-rated dishwasher and refrigerator add to water and energy savings. The home’s dishwasher uses 33% less water than other efficient dishwashers by saving water from the last rinse cycle for use in the first prerinse cycle of the next load.
Zero-VOC interior paint, low-VOC carpeting, and MERV 8-rated air filters are part of a comprehensive indoor air quality system.
ENERGY STAR ceiling fans provide cooling through air movement that can help reduce the need for refrigerant-based air conditioning.
EPA WaterSense-labeled bathroom faucets, toilets, and showerheads cut water use while a real-time water meter allows homeowners to track water usage to help find additional savings.
The attic is insulated at the underside of the roof deck with R-38 of blown fiberglass, providing a conditioned space for the comfort system’s heating and cooling ducts.
The home’s greywater recycling system allows water from showers to be recycled for non-potable uses like irrigation and toilet flushing.
The home’s 7.0-kW solar electric system provides enough power for the home and an electric car charging station in the garage.
KB Home hosted a grand opening event and gave tours to college students and members of the media.
The KB Home DoubleZero House 3.0 is a zero energy home, producing as much power as it consumes in a year.
“The energy performance this home achieves is truly remarkable.”
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“The energy performance this home achieves is truly remarkable, and we commend KB Home for continuing to champion the use of clean, renewable energy and cutting-edge technologies to help meet California’s growing demand for highly efficient homes.”
– Andrew McAllister, California Energy Commissioner