DOE Tour of Zero: Port Hadlock by Clifton View Homes
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Clifton View Homes built this 1,784-square-foot zero energy home in Port Hadlock, Washington, to the performance criteria of the U.S. Department of Energy Zero Energy Ready Home (ZERH) program.
The ultra-efficient home has 7.56 kW of solar electric panels on the roof that help it to achieve annual energy bills of $35. The solar panels are installed on the durable, fire-resistant standing seam steel roof. The roofing is installed on a structural insulated panel (SIP) thermal blanket roof constructed with 10.25-inch thick panels (R-40).
The high-performance wall includes a SIP thermal blanket with 6.5-inch wall panels (R-25) covered in corrugated house wrap that ensures effective drainage under the fiber cement siding.
Ultra-efficient windows include triple-pane argon-filled glass with advanced low-emissivity coatings on three layers to reflect most of the winter sun back into the rooms from the wall of windows facing north to capture the view. South-facing clerestory, high-solar heat gain coefficient windows provide direct solar heating to these north-facing rooms.
The SIP thermal blanket roof allows for highly insulated cathedral ceilings in nearly every room of the house.
Ultra-efficient triple-pane windows minimize heat loss while maximizing views of the harbor from almost every room.
The home’s high-efficiency appliances include an ENERGY STAR-rated refrigerator, dishwasher, and clothes washer.
The same ultra-efficient air-to-water heat pump that provides hot water for the in-floor radiant heat also provides domestic hot water.
This compact outside unit for the ultra-efficient air-to-water heat pump (COP 4.1) provides space heating and domestic hot water. The heat pump could also provide cooling, but the house is designed so that thermal mass and ventilating exhaust fans with timer controls remove most of the unwanted heat from the home during the few high-temperature days in the mild Northwest climate.
Two rain gardens were constructed on site to handle all of the roof drain off.
“We can definitely say we are 'house proud' when we drive up the street and see our beautiful Zero Energy Ready Home.”
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"The house design as well as the insulated walls kept us comfortable during this unusual hot summer while the fan clears out any residual heat from the day, pulling in fresh cool night air through the HEPA ventilation system. The resulting comfortable temperature makes for a restful, sound sleep. We feel confident that winters will be just as comfortable as the SIP walls hold in the radiant floor’s heat. We can definitely say we are 'house proud' when we drive up the street and see our beautiful Zero Energy Ready Home.”