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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
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Ductwork, like this insulated flex duct, penetrates the subfloor where there are floor registers on the floor above.

Ductwork, like this insulated flex duct, penetrates the subfloor where there are floor registers on the floor above
Case Study:

Eaglesprings and Waterhaven Communities

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Electronically controlled dampers allow this central air system to provide zoned heating and cooling to specific parts of the home.

Electronically controlled dampers allow this central air system to provide zoned heating and cooling to specific parts of the home.
Video:

Encapsulated Ducts

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Encapsulated ducts are sprayed with ccSPF in an unconditioned attic

Encapsulated ducts are sprayed with ccSPF in an unconditioned attic
Presentation:

Energy Code - Module 7: Ducts, HVAC, Hot Water, and Lighting

Energy Code - Module 7: Ducts, HVAC, Hot Water, and Lighting
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Ensure that the air handler location does not conflict with duct routing

Ensure that the air handler location does not conflict with duct routing
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Ensure that the top of the window well is level prior to installing blinds.

Ensure that the top of the window well is level prior to installing blinds.
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Ensure there is enough space between the blinds and window to allow for free movement.

Ensure there is enough space between the blinds and window to allow for free movement.
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Example calculation of the leakage allowance for a duct leakage test at final for a ventilation system in a multifamily building

Example calculation of the leakage allowance for a duct leakage test at final for a ventilation system in a multifamily building
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Example calculation of the leakage allowance for a duct leakage test at rough-in for a ventilation system in a multifamily building

Example calculation of the leakage allowance for a duct leakage test at rough-in for a ventilation system in a multifamily building
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Example calculations for converting measured leakage airflow and leakage allowance when measured at a pressure other than the design or operating pressure

Example calculations for converting measured leakage airflow and leakage allowance when measured at a pressure other than the design or operating pressure
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Example calculations for converting total airflow and leakage allowance when measured at 50 Pa instead of the design or operating pressure

Example calculations for converting total airflow and leakage allowance when measured at 50 Pa instead of the design or operating pressure