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A pitot tube can be used to measure velocity pressure in a duct; at least twelve measurements are taken across the duct and velocity pressure is converted to velocity to calculate airflow

A pitot tube can be used to measure velocity pressure in a duct; at least twelve measurements are taken across the duct and velocity pressure is converted to velocity to calculate airflow
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A planted “green” roof absorbs storm water runoff.

A planted “green” roof absorbs storm water runoff.
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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 plastic mesh rain screen is installed over the rigid foam to provide an air gap behind the exterior cladding allowing for drainage and drying.

A plastic mesh rain screen is installed over the rigid foam to provide an air gap behind the exterior cladding allowing for drainage and drying.
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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
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A portable power meter shows the power usage of equipment; e.g., this laptop is drawing 12 watts while idle

A portable power meter shows the power usage of equipment; e.g., this laptop is drawing 12 watts while idle
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A powered flow hood is used to measure outside air flowing into the inlet terminal of a whole-house ventilation system

A powered flow hood is used to measure outside air flowing into the inlet terminal of a whole-house ventilation system
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A premade gasket seals out air leaks around the water line.

A premade gasket seals out air leaks around the water line.
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A professional tree survey should be made prior to construction to assess the health and usefulness of each tree surrounding the future home and to determine which trees on a building site should be preserved.

A professional tree survey should be made prior to construction to assess the health and usefulness of each tree surrounding the future home and to determine which trees on a building site should be preserved
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A properly sized cold climate heat pump can meet 100% of a home’s heating load in nearly any location in the United States

A properly sized cold climate heat pump can meet 100% of a home’s heating load in nearly any location in the United States
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A properly sized high-efficiency heat pump is located in conditioned space in a closet inside the home.

A properly sized high-efficiency heat pump is located in conditioned space in a closet inside the home.
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A pumper is used to place the concrete into the foam form walls

A pumper is used to place the concrete into the foam form walls
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A push button operates the on-demand hot water circulation pump in this master bathroom.

A push button operates the on-demand hot water circulation pump in this master bathroom.
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A putty knife is used to press caulk into a seam in the plywood sheathing.

A putty knife is used to press caulk into a seam in the plywood sheathing.
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A PV panel anchoring system

A PV panel anchoring system
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A Quick Guide on How to Select a New Stove for Home Heat

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A raised slab foundation elevates the level of the floor above grade

A raised slab foundation elevates the level of the floor above grade
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A raised wood pier foundation can raise the subfloor above the design flood elevation.

A raised wood pier foundation can raise the subfloor above the design flood elevation.
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A rater will turn off the HVAC fan before starting the duct leakage or blower door test.

A rater will turn off the HVAC fan before starting the duct leakage or blower door test.
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A reciprocating saw works well to cut PVC pipe during pool pump installation

A reciprocating saw works well to cut PVC pipe during pool pump installation
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A refrigerator is secured to the wall by use of an angle bracket with lag bolts, expansion bolts and metal screws

A refrigerator is secured to the wall by use of an angle bracket with lag bolts, expansion bolts and metal screws
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A resilient home with storm shutters, a sump pump that drains to a french drain, rainwater collection, solar thermal and PV, and raised garden beds.

A resilient home with storm shutters, a sump pump that drains to a french drain, rainwater collection, solar thermal and PV, and raised garden beds.
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A resilient multifamily building in Puerto Rico constructed of concrete on a raised slab foundation with a hip roof design for wind resistance and deep overhangs and permanent awnings to keep sun and rain off windows.

A resilient multifamily building in Puerto Rico constructed of concrete on a raised slab foundation with a hip roof design for wind resistance and deep overhangs and permanent awnings to keep sun and rain off windows.
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A reversible window fan can operate via thermostatic or remote control and can selectively exhaust air or bring in outdoor air

A reversible window fan can operate via thermostatic or remote control and can selectively exhaust air or bring in outdoor air