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Correct air sealing methods for common attic bypass air leakage paths.

Correct air sealing methods for common attic bypass air leakage paths.
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Cut the duct to the length needed

Cut the duct to the length needed
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Deep energy retrofit showing insulation sprayed on exterior of walls over existing siding

Deep energy retrofit showing insulation sprayed on exterior of walls over existing siding
Presentation:

Design Options for Locating Ducts within Conditioned Space

Design Options for Locating Ducts within Conditioned Space
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Door has been undercut to allow for specified amount of air flow therefore contributing to pressure balancing

Door has been undercut to allow for specified amount of air flow therefore contributing to pressure balancing
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Door is not undercut therefore not contributing to pressure balancing

Door is not undercut therefore not contributing to pressure balancing
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Drywall is installed, hiding the duct work

Drywall is installed, hiding the duct work
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Duct is compressed

Duct is compressed
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Duct is compressed

Duct is compressed
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Duct is kinked in cavity

Duct is kinked in cavity
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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 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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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
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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 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