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A high-efficiency heat pump is installed in a closet within this home’s conditioned space.

A high-efficiency heat pump is installed in a closet within this home’s conditioned space.
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A layer of pea gravel or crushed stone, 4 inches thick and sloped 5%, provides a pest-resistant ground break around the perimeter of a slab foundation

A layer of pea gravel or crushed stone, 4 inches thick and sloped 5%, provides a pest-resistant ground break around the perimeter of a slab foundation
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A layer of pea gravel or crushed stone, 4 inches thick and sloped 5%, provides a pest-resistant ground break around the perimeter of a basement foundation

A layer of pea gravel or crushed stone, 4 inches thick and sloped 5%, provides a pest-resistant ground break around the perimeter of a basement foundation
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A low-sloped shed roof with the thermal boundary located at either a) the flat ceiling with a vented attic or b) the roof line for an unvented attic

A low-sloped shed roof with the thermal boundary located at either a) the flat ceiling with a vented attic or b) the roof line for an unvented attic
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A main vent is installed on the side of a drip leg

A main vent is installed on the side of a drip leg
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A masonry chimney is reconstructed to withstand seismic forces by adding an insert to the existing firebox

A masonry chimney is reconstructed to withstand seismic forces by adding an insert to the existing firebox
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A masonry chimney is reconstructed to withstand seismic forces by completely retrofitting the firebox and chimney using light-frame construction on the top of the foundation

A masonry chimney is reconstructed to withstand seismic forces by completely retrofitting the firebox and chimney using light-frame construction on the top of the foundation
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A masonry chimney is reconstructed to withstand seismic forces by maintaining the current firebox but replacing the chimney section with a metal flue and light-weight chimney enclosure.

A masonry chimney is reconstructed to withstand seismic forces by maintaining the current firebox but replacing the chimney section with a metal flue and light-weight chimney enclosure.
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A masonry chimney is shortened and capped at roof level to reduce its chances of detaching in high winds or earthquakes; the fireplace can no longer be used.

A masonry chimney is shortened and capped at roof level to reduce its chances of detaching in high winds or earthquakes; the fireplace can no longer be used.
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A metal storm panel is installed in a track permanently mounted above and below the window frame and secured with wing nuts to studs mounted on the track.

A metal storm panel is installed in a track permanently mounted above and below the window frame and secured with wing nuts to studs mounted on the track.
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A mini-split air-conditioning system can be a highly effective low-energy approach to provide cooling to one designated zone in the house

A mini-split air-conditioning system can be a highly effective low-energy approach to provide cooling to one designated zone in the house
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A modern single-inlet direct evaporative cooler draws outside air through an 8- to 12-inch media filter

A modern single-inlet direct evaporative cooler draws outside air through an 8- to 12-inch media filter
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A molded plastic drainage board rainscreen allows vertical drainage while providing uniform support for the siding and resisting compression from screws and nails.

A molded plastic drainage board rainscreen allows vertical drainage while providing uniform support for the siding and resisting compression from screws and nails.
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A nitrogen pressure test was completed on this ductless mini-split heat pump using a digital manifold gauge.

A nitrogen pressure test was completed on this ductless mini-split heat pump using a digital manifold gauge.
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A North American map showing states with active NFPA fire sprinkler coalitions.

A North American map showing states with active NFPA fire sprinkler coalitions.
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A nylon draw band and tensioning tool are used to secure the inner coil of the pre-insulated flexible duct

A nylon draw band and tensioning tool are used to secure the inner coil of the pre-insulated flexible duct
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A nylon draw band and tensioning tool are used to secure the inner liner of the pre-insulated flexible duct

A nylon draw band and tensioning tool are used to secure the inner liner of the pre-insulated flexible duct
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A passive air inlet is one approach to providing makeup air when operating an exhaust-only ventilation system

A passive air inlet is one approach to providing makeup air when operating an exhaust-only ventilation system
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A passive flow hood is used to measure the flow rate of air that passes through a ceiling-mounted exhaust fan

A passive flow hood is used to measure the flow rate of air that passes through a ceiling-mounted exhaust fan
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A patio and wall constructed of noncombustible concrete, stone, or brick helps to deflect heat and protect the deck and house from approaching wildfires.

A patio and wall constructed of noncombustible concrete, stone, or brick helps to deflect heat and protect the deck and house from approaching wildfires.
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A permanent awning prevents snow and overflowing ice dams from causing damage to HVAC equipment below.

A permanent awning prevents snow and overflowing ice dams from causing damage to HVAC equipment below.
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A piece of siding is used as sill extension and to provide slope in the opening for the window, which is deeper because exterior rigid foam has been added

A piece of siding is used as sill extension and to provide slope in the opening for the window, which is deeper because exterior rigid foam has been added
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A plastic fiber drainage mat rainscreen provides uniform support for the siding and allows moisture to flow horizontally and diagonally in addition to vertically.

A plastic fiber drainage mat rainscreen provides uniform support for the siding and allows moisture to flow horizontally and diagonally in addition to vertically.
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A portable CO monitor is used to test for ambient CO near a ventless combustion fireplace

A portable CO monitor is used to test for ambient CO near a ventless combustion fireplace