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A ventless gas fireplace has no chimney

A ventless gas fireplace has no chimney
Presentation:

A Whole New World – ENERGY STAR + HVAC Grading

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Above the 20 inches of blown cellulose ultra-efficient attic insulation, Near Zero Maine installed a walkway in the attic to provide easy access to electric wiring.

Above the 20 inches of blown cellulose ultra-efficient attic insulation, Near Zero Maine installed a walkway in the attic to provide easy access to electric wiring.
Presentation:

Advances in Manufactured Home Energy Efficient Design

Advances in Manufactured Home Energy Efficient Design
Case Study:

Affordable Housing EV Charger Installation Case Study

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After getting a new water heater into place, reattach the hot and cold water (left) and the electricity (right).

After getting a new water heater into place, reattach the hot and cold water (left) and the electricity (right).
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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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Air flow is produced when central HVAC fan is energized (set thermostat to “fan”)

Air flow is produced when central HVAC fan is energized (set thermostat to “fan”)
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Air inlet is located in a convenient place for homeowner to clean

Air inlet is located in a convenient place for homeowner to clean
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Air inlet is not convenient for cleaning and located next to exhaust outlets

Air inlet is not convenient for cleaning and located next to exhaust outlets
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Air seal and insulate flex ducts

Air seal and insulate flex ducts
CAD File:

Air seal at top plate electrical penetration

Preview Image
Air seal at top plate electrical penetration
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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
CAD File:

Air sealing at recessed lighting in attic - pre made

Preview Image
Air sealing at recessed lighting in attic - pre made
CAD File:

Air sealing at recessed lighting in attic - site built

Preview Image
Air sealing at recessed lighting in attic - site built
CAD File:

Air sealing at whole house fan enclosure

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Air sealing at whole house fan enclosure
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Air-seal around all wiring installed through walls, ceilings, and flooring to keep conditioned air from leaking into unconditioned space.

Air-seal around all wiring installed through walls, ceilings, and flooring to keep conditioned air from leaking into unconditioned space.
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Air-seal the electrical panel.

Air-seal the electrical panel.
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Air-seal wiring holes in top plates with foam.

Air-seal wiring holes in top plates with foam.
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Airtight electrical boxes have built-in gaskets and self-sealing wire holes.

Airtight electrical boxes have built-in gaskets and self-sealing wire holes.
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All electrical system components should be raised above the design flood elevation to protect against water and speed up recovery, unless properly designed to be water-tight per code requirements.

All electrical system components should be raised above the design flood elevation to protect against water and speed up recovery, unless properly designed to be water-tight per code requirements.
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All of the exhaust fans are wired to one labeled switch at the electrical panel

All of the exhaust fans are wired to one labeled switch at the electrical panel
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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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All return air and mechanically supplied outdoor air pass through filter prior to conditioning

All return air and mechanically supplied outdoor air pass through filter prior to conditioning