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A roof drain is installed in an existing flat roof retrofitted with above-deck rigid foam insulation that is integrated with new air and water control layers

A roof drain is installed in an existing flat roof retrofitted with above-deck rigid foam insulation that is integrated with new air and water control layers
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A second layer of rigid insulation is installed over the 2 in. by 4 in. retaining strip

A second layer of rigid insulation is installed over the 2 in. by 4 in. retaining strip
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A simple vented attic with good air-sealing of the drywall ceiling air barrier, air flow from soffit vents to ridge vents protected by ventilation baffles, and lots of insulation covering the attic floor is unlikely to encourage ice dams.

A simple vented attic with good air-sealing of the drywall ceiling air barrier, air flow from soffit vents to ridge vents protected by ventilation baffles, and lots of insulation covering the attic floor is unlikely to encourage ice dams.
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A single ductless heat pump heats and cools the country’s first DOE Zero Energy Ready certified manufactured home.

A single ductless heat pump heats and cools the country’s first DOE Zero Energy Ready certified manufactured home.
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A site-built rafter roof with a raised top plate allows for more insulation underneath.

A site-built rafter roof with a raised top plate allows for more insulation underneath.
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A small, single-zone cooling system such as this ductless mini-split heat pump can be a very effective way to provide emergency cooling with a low power draw on a backup power system.

A small, single-zone cooling system such as this ductless mini-split heat pump can be a very effective way to provide emergency cooling with a low power draw on a backup power system.
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A standard site-built roof of rafters may pinch the insulation at the eaves

A standard site-built roof of rafters may pinch the insulation at the eaves
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A thick vapor barrier and radon vent pipe keep soil gases out of the home.

A thick vapor barrier and radon vent pipe keep soil gases out of the home.
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A trained installer completely fills the wall cavities with sprayed cellulose insulation.

A trained installer completely fills the wall cavities with sprayed cellulose insulation.
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A typical Las Vegas hot-dry climate home made of wood frame construction and insulated with R-25 expanded polystyrene externally over a drainage plane, with an unvented wood frame insulated attic and roof assembly.

A typical Las Vegas hot-dry climate home made of wood frame construction and insulated with R-25 expanded polystyrene externally over a drainage plane, with an unvented wood frame insulated attic and roof assembly.
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A vacuum decay test is performed on this ductless mini-split heat pump using a digital micron gauge for accurate measurement; a deep vacuum is achieved quickly by using large diameter, vacuum-rated hoses, and removing valve cores

A vacuum decay test is performed on this ductless mini-split heat pump using a digital micron gauge for accurate measurement; a deep vacuum is achieved quickly by using large diameter, vacuum-rated hoses, and removing valve cores
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A wall-mounted ductless air handler for a ductless heat pump system

A wall-mounted ductless air handler for a ductless heat pump system
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A water-source heat pump with a closed-loop in-pond piping system

A water-source heat pump with a closed-loop in-pond piping system
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Adding air-sealing and rigid foam insulation at the wall-to-overhanging floor juncture at the outside corner of an existing home

Adding air-sealing and rigid foam insulation at the wall-to-overhanging floor juncture at the outside corner of an existing home
Presentation:

Adding Automated Shading to the High Performance Toolkit: HVAC, Health & Wellness, and High Tech

Presentation:

Adding Automated Shading to the High Performance Toolkit: HVAC, Health & Wellness, and High Tech

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Adding weatherstripping to a door

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Advanced framing details include corners that are constructed with fewer studs or studs aligned so that insulation can be installed in the corner.

Advanced framing details include corners that are constructed with fewer studs or studs aligned so that insulation can be installed in the corner.
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Advanced framing details include framing aligned to allow for insulation at interior-exterior wall intersections.

Advanced framing details include framing aligned to allow for insulation at interior-exterior wall intersections.
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Advanced framing details include insulated headers over windows and doors.

Advanced framing details include insulated headers over windows and doors.
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Advanced framing details include open headers and reduced framing around windows and two-stud corners to allow more room for insulation in the wall cavities while reducing lumber costs.

Advanced framing details include open headers and reduced framing around windows and two-stud corners to allow more room for insulation in the wall cavities while reducing lumber costs.
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Advanced framing details throughout house including insulated and open headers

Advanced framing details throughout house including insulated and open headers
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Advanced framing showing open headers

Advanced framing showing open headers
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Advanced framing techniques including 2x6 walls spaced at 24 inches on center and ladder blocking at wall intersections allow more space for insulation in the wall cavities while open-web floor joists provide space between floors for ducting.

Advanced framing techniques including 2x6 walls spaced at 24 inches on center and ladder blocking at wall intersections allow more space for insulation in the wall cavities while open-web floor joists provide space between floors for ducting.