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A static pressure measurement is taken on this air handler using probes on the supply and return sides of the fan.

A static pressure measurement is taken on this air handler using probes on the supply and return sides of the fan.
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A supplemental dehumidifier can be integrated with the central air handler

A supplemental dehumidifier can be integrated with the central air handler
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A supplemental dehumidifier is integrated with the home’s HVAC air handler to provide extra dehumidification when needed

A supplemental dehumidifier is integrated with the home’s HVAC air handler to provide extra dehumidification when needed
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A technician assembles the spray sealant injection system to seal HVAC ducts from the inside

A technician assembles the spray sealant injection system to seal HVAC ducts from the inside
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A technician conducts a duct blaster test

A technician conducts a duct blaster test
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A tree of main vents is installed on top of drip piping

A tree of main vents is installed on top of drip piping
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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 ventilation controller with a manual override is located on a central air handler fan that is located in an accessible location

A ventilation controller with a manual override is located on a central air handler fan that is located in an accessible location
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A ventless gas fireplace has no chimney

A ventless gas fireplace has no chimney
Presentation:

A Whole New World – ENERGY STAR + HVAC Grading

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Above the 20 inches of blown cellulose ultra-efficient attic insulation, Near Zero Maine installed a walkway in the attic to provide easy access to electric wiring.

Above the 20 inches of blown cellulose ultra-efficient attic insulation, Near Zero Maine installed a walkway in the attic to provide easy access to electric wiring.
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Adhesive caulk is used to seal seams and attach the multiple layers of rigid insulation

Adhesive caulk is used to seal seams and attach the multiple layers of rigid insulation
Presentation:

Advances in Manufactured Home Energy Efficient Design

Advances in Manufactured Home Energy Efficient Design
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After all holes through the ceiling are air-sealed and the baffles have been installed, then the insulation can be installed.

After all holes through the ceiling are air-sealed and the baffles have been installed, then the insulation can be installed.
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After securing the inner coil, cover the draw band and the seam with a generous amount of mastic

After securing the inner coil, cover the draw band and the seam with a generous amount of mastic
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Air flow is produced when central HVAC fan is energized (set thermostat to “fan”)

Air flow is produced when central HVAC fan is energized (set thermostat to “fan”)
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Air inlet is located in a convenient place for homeowner to clean

Air inlet is located in a convenient place for homeowner to clean
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Air inlet is not convenient for cleaning and located next to exhaust outlets

Air inlet is not convenient for cleaning and located next to exhaust outlets
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Air seal and insulate drawer and closet boxes in attic kneewalls

Air seal and insulate drawer and closet boxes in attic kneewalls
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Air seal and insulate flex ducts

Air seal and insulate flex ducts
CAD File:

Air seal at cabinet soffit - single-story

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Air seal at cabinet soffit - single-story
CAD File:

Air seal at cabinet soffit - two-story

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Air seal at cabinet soffit - two-story
CAD File:

Air seal at duct soffit

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Air seal at duct soffit