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Video:

Duct Leakage to Outdoors (2)

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Duct pressure is checked at key locations such as individual bath exhaust registers to ensure there is even pressure distribution in a duct system during a duct leakage test

Duct pressure is checked at key locations such as individual bath exhaust registers to ensure there is even pressure distribution in a duct system during a duct leakage test
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Duct pressure is checked at terminal registers to ensure there is even pressure distribution in a duct system during a duct leakage test

Duct pressure is checked at terminal registers to ensure there is even pressure distribution in a duct system during a duct leakage test
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Duct to boot connection of jump duct is properly sealed with mastic

Duct to boot connection of jump duct is properly sealed with mastic
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Duct to boot connection of jump duct not fastened and sealed

Duct to boot connection of jump duct not fastened and sealed
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Duct work is strapped to the chase ceiling

Duct work is strapped to the chase ceiling
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Duct work is uninsulated and not sealed at seams

Duct work is uninsulated and not sealed at seams
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Duct/pipe penetration with metal cap flashing and wood blocking for trim attachment

Duct/pipe penetration with metal cap flashing and wood blocking for trim attachment
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Ducts are insulated but strapping is compressing the insulation therefore reducing the R-value

Ducts are insulated but strapping is compressing the insulation therefore reducing the R-value
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Ducts are properly insulated and supported without compressing the insulation

Ducts are properly insulated and supported without compressing the insulation
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Ducts are run straight and supported properly

Ducts are run straight and supported properly
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Ducts crammed into cavity, kinked and sharply bent

Ducts crammed into cavity, kinked and sharply bent
Video:

Ducts Encapsulated in Spray Foam and Buried in Attic Insulation

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Ducts properly installed without compression and appropriately supported

Ducts properly installed without compression and appropriately supported
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Ducts properly installed without compression and appropriately supported

Ducts properly installed without compression and appropriately supported
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Ducts running parallel to trusses have limited width due to truss spacing

Ducts running parallel to trusses have limited width due to truss spacing
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Ducts sagging because supports not installed at regular intervals

Ducts sagging because supports not installed at regular intervals
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Ducts should not be located in exterior wall cavities

Ducts should not be located in exterior wall cavities
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Ducts well supported

Ducts well supported
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Ducts well supported

Ducts well supported
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Ducts well supported

Ducts well supported
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Ducts well supported by framing and straps as needed

Ducts well supported by framing and straps as needed
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Ductwork in an unvented attic

Ductwork in an unvented attic
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Ductwork located in a vented attic is subject to high attic temperatures and significant heat gain through the walls of the ducts

Ductwork located in a vented attic is subject to high attic temperatures and significant heat gain through the walls of the ducts