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A theatrical fog machine produces dense fog can be used to blow fog into a duct system to make leaks obvious.

A theatrical fog machine produces dense fog can be used to blow fog into a duct system to make leaks obvious.
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A theatrical fog machine produces dense fog that can be used to blow fog into a duct system to make leaks obvious.

A theatrical fog machine produces dense fog that can be used to blow fog into a duct system to make leaks obvious.
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A triple-filtered energy recovery ventilator is installed with individual supply ducts to provide fresh air to each room.

A triple-filtered energy recovery ventilator is installed with individual supply ducts to provide fresh air to each room.
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A weatherstripping gasket is installed on the framing that the crawlspace hatch panel rests on.

A weatherstripping gasket is installed on the framing that the crawlspace hatch panel rests on.
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Adding air-sealing and rigid foam insulation at the wall-to-overhanging floor juncture at the outside corner of an existing home

Adding air-sealing and rigid foam insulation at the wall-to-overhanging floor juncture at the outside corner of an existing home
Video:

Adding weatherstripping to a door

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Adhesive caulk is used to seal seams and attach the multiple layers of rigid insulation

Adhesive caulk is used to seal seams and attach the multiple layers of rigid insulation
Video:

Advanced Framing vs Traditional Framing

Presentation:

Advances in Manufactured Home Energy Efficient Design

Advances in Manufactured Home Energy Efficient Design
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After air-sealing the exhaust fan box, re-install the fan, and lights if needed, and re-attach the cover

After air-sealing the exhaust fan box, re-install the fan, and lights if needed, and re-attach the cover
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After cleaning the exhaust fan, the gap around the fan between the fan housing and the drywall should be caulked to stop air leakage from the house to the attic

After cleaning the exhaust fan, the gap around the fan between the fan housing and the drywall should be caulked to stop air leakage from the house to the attic
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After connecting with sheet metal screws, this take-off collar is then air sealed and further secured using UL 181 fiber-reinforced duct sealant mastic paste.

After connecting with sheet metal screws, this take-off collar is then air sealed and further secured using UL 181 fiber-reinforced duct sealant mastic paste.
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After securing the inner coil, cover the draw band and the seam with a generous amount of mastic

After securing the inner coil, cover the draw band and the seam with a generous amount of mastic
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After spray foam dries, a utility knife can be used to carefully trim excess foam around the exhaust fan housing

After spray foam dries, a utility knife can be used to carefully trim excess foam around the exhaust fan housing
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After spraying on foaming glass cleaner, smooth the caulk with a gloved finger to get a neat, even finish.

After spraying on foaming glass cleaner, smooth the caulk with a gloved finger to get a neat, even finish
CAD File:

Air barrier at garage band joist - 1 1/2 inch rigid insulation with 2x4 sleepers

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Air barrier at garage band joist - 1 1/2 inch rigid insulation with 2x4 sleepers
CAD File:

Air barrier at garage band joist - 1 inch rigid insulation with 1x3 wood furring

Preview Image
Air barrier at garage band joist - 1 inch rigid insulation with 1x3 wood furring
CAD File:

Air barrier at garage band joist - 1 inch rigid insulation with 2x2 wood furring

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Air barrier at garage band joist - 1 inch rigid insulation with 2x2 wood furring
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Air handler platforms used as return air plenums can draw air from vented attics and crawlspaces through other connected framing cavities

Air handler platforms used as return air plenums can draw air from vented attics and crawlspaces through other connected framing cavities
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Air leaking through the home's envelope wastes a lot of energy and increases energy costs.

Air leaking through the home's envelope wastes a lot of energy and increases energy costs.
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Air seal a heat pump or air conditioner air handler cabinet at all seams, holes, and junctions

Air seal a heat pump or air conditioner air handler cabinet at all seams, holes, and junctions
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Air seal all holes and seams in the furnace cabinet with mastic, foil tape, or putty

Air seal all holes and seams in the furnace cabinet with mastic, foil tape, or putty
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Air seal and insulate drawer and closet boxes in attic kneewalls

Air seal and insulate drawer and closet boxes in attic kneewalls
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Air seal and insulate flex ducts

Air seal and insulate flex ducts