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Case Study:

Building America Energy Performance Brief: Air Sealing Duct Boots and Duct Chases

Case Study:

Building America Top Innovations 2013: Buried and Encapsulated Ducts

Case Study:

Building America Top Innovations 2014: California Energy Standards Recognize the Importance of Filter Selection

Case Study:

Building America Top Innovations 2014: HVAC Cabinet Air Leakage Test Method

Image:

Building cavities not used as supply or return ducts unless they meet Items 3.2, 3.3, 4.1, and 4.2 of this Checklist

Building cavities not used as supply or return ducts unless they meet Items 3.2, 3.3, 4.1, and 4.2 of this Checklist
Presentation:

Building Code Training - Residential Thermal Envelope - Air Sealing

Video:

Building Enclosure: "Hot Spot" Quality HVAC Ductwork

Presentation:

Building Science for Dry Climates 7 - Duct Testing and Leakage

Image:

Buried ducts are laid on the floor of a vented attic then covered with spray foam and blown attic floor insulation

Buried ducts are laid on the floor of a vented attic then covered with spray foam and blown attic floor insulation
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Burried and encapsulated ducts in a ceiling plane

Burried and encapsulated ducts in a ceiling plane
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Cavity used for return is not insulated and is not air sealed, which will pull in air from outside

Cavity used for return is not insulated and is not air sealed, which will pull in air from outside
Image:

Cavity was not air sealed

Cavity was not air sealed
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Ceiling gypsum board has been installed

Ceiling gypsum board has been installed
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Chase framing is completed and ready for drywall

Chase framing is completed and ready for drywall
Image:

Closed-cell spray foam covers the heat recovery ventilator ducts and also seals all top plates and seams in the ceiling drywall of the vented attic.

Closed-cell spray foam covers the heat recovery ventilator ducts and also seals all top plates and seams in the ceiling drywall of the vented attic.
Case Study:

Coastal Habitats

Image:

Collars that are specifically made for flexible duct have a raised bead to prevent the duct from slipping off

Collars that are specifically made for flexible duct have a raised bead to prevent the duct from slipping off
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Common exhaust duct not shared by fans in separate dwellings

Common exhaust duct not shared by fans in separate dwellings
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Compact duct design layout

Compact duct design layout
Image:

Compact duct layout example

Compact duct layout example
Video:

Conducting a Residential Duct Leakage Test and Blower Door Test: Duct blaster testing – Hooking up the duct blaster to the return register

Video:

Conducting a Residential Duct Leakage Test and Blower Door Test: Quick and easy set up of the blower door and determination of whole house air leakage

Video:

Conducting a Residential Duct Leakage Test and Blower Door Test: Sequencing - Run the blower door test first

Video:

Conducting a Residential Duct Leakage Test: Why set the Duct Fan to Depressurize not Pressurize the Home