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Duct is located in unconditioned space and is properly insulated

Duct is located in unconditioned space and is properly insulated
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Duct is run straight and supported properly

Duct is run straight and supported properly
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Duct is run straight and supported properly

Duct is run straight and supported properly
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Duct lacks adequate support to carry the weight so the few straps are pinching the duct

Duct lacks adequate support to carry the weight so the few straps are pinching the duct
Video:

Duct Leakage to Outdoors (1)

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