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Air seal and insulate flex ducts

Air seal and insulate flex ducts
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Air seal around all duct shafts and flues installed through ceilings, walls, or flooring to keep conditioned air from leaking into unconditioned space.

Air seal around all duct shafts and flues installed through ceilings, walls, or flooring to keep conditioned air from leaking into unconditioned space.
CAD File:

Air seal at chase walls - plan

Preview Image
Air seal at chase walls - plan
CAD File:

Air seal at duct boot

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Air seal at duct boot
CAD File:

Air seal at duct soffit

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Air seal at duct soffit
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Air seal duct boot to ceiling by installing fiberglass mesh tape and mastic over seam

Air seal duct boot to ceiling by installing fiberglass mesh tape and mastic over seam
Presentation:

All Electric & Fossil Fuel Free: The Ultimate Z.E.N. Home

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All of the ductwork for the efficient (8.5 HSPF, 15 SEER) heat pump is mastic sealed and installed in conditioned space.

All of the ductwork for the efficient (8.5 HSPF, 15 SEER) heat pump is mastic sealed and installed in conditioned space.
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All other supply ducts and all return ducts in unconditioned space have insulation ≥ R-6

All other supply ducts and all return ducts in unconditioned space have insulation ≥ R-6
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An energy recovery ventilator provides filtered fresh air to every room in the house.

An energy recovery ventilator provides filtered fresh air to every room in the house.
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An exhaust fan pulls damp air out of a retrofitted sealed crawlspace while drawing in dry air from the living space

An exhaust fan pulls damp air out of a retrofitted sealed crawlspace while drawing in dry air from the living space
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An in-line airflow station installed in rigid duct provides a location to measure ventilation airflow

An in-line airflow station installed in rigid duct provides a location to measure ventilation airflow
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Architectural diagram showing mounting surface for PV components

Architectural diagram showing mounting surface for PV components
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Assembled section of fiber board duct

Assembled section of fiber board duct
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Attic radiant barriers

Attic radiant barriers
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Back-draft damper still has a piece of tape that prevented it from rattling during shipping

Back-draft damper still has a piece of tape that prevented it from rattling during shipping
Video:

Backdraft Dampers

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Basement plan showing sump pump location and perimeter drain that empties to the sump pit

Basement plan showing sump pump location and perimeter drain that empties to the sump pit
Case Study:

Baxter Community - High Performance Green Building

Baxter Community - High Performance Green Building
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Because this ICF and spray foamed house is so well insulated, the HVAC system is smaller, the round metal ducts are smaller diameter, and the duct layout is more compact.

Because this ICF and spray foamed house is so well insulated, the HVAC system is smaller, the round metal ducts are smaller diameter, and the duct layout is more compact.
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Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa

Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa
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Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa

Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa
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Before sealing and insulating the crawlspace, the windows were sealed, the window wells backfilled, and sumps pumps were installed that discharged to the gutter downspouts

Before sealing and insulating the crawlspace, the windows were sealed, the window wells backfilled, and sumps pumps were installed that discharged to the gutter downspouts
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Benefits of foundation insulation and other design improvements

Benefits of foundation insulation and other design improvements