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CAD File:

Air seal at chase walls - plan

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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
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All dampers should be completely open in a duct system being tested for air leakage; looking at the actuator from outside the duct is not a reliable way to know damper position, so the pressure downstream of the damper should be measured

All dampers should be completely open in a duct system being tested for air leakage; looking at the actuator from outside the duct is not a reliable way to know damper position, so the pressure downstream of the damper should be measured
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All dampers should be completely open in a duct system being tested for air leakage; this damper is only partially open and should be opened fully prior to testing

All dampers should be completely open in a duct system being tested for air leakage; this damper is only partially open and should be opened fully prior to testing
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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 of the pipes are insulated on this high-efficiency 50-gallon heat pump water heater.

All of the pipes are insulated on this high-efficiency 50-gallon heat pump water heater.
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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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Alternative locations of heat pump water heaters in a hypothetical multifamily building using a cluster deployment showing numerous possible deployment options including clusters consisting of pairs on the same floor or on different floors

Alternative locations of heat pump water heaters in a hypothetical multifamily building using a cluster deployment showing numerous possible deployment options including clusters consisting of pairs on the same floor or on different floors
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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 ENERGY STAR central exhaust ventilation test is performed on a rooftop ERV duct system by an ENERGY STAR MFNC rater

An ENERGY STAR central exhaust ventilation test is performed on a rooftop ERV duct system by an ENERGY STAR MFNC rater.
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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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An indoor water heater should be secured to the wall’s studs to prevent it from moving or tipping over in the event of an earthquake

An indoor water heater should be secured to the wall’s studs to prevent it from moving or tipping over in the event of an earthquake
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An old toothbrush works great for cleaning the inlet water filter on a tankless water heater.

An old toothbrush works great for cleaning the inlet water filter on a tankless water heater.
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Anatomy of a Heat Pump Water Heater

Anatomy of a Heat Pump Water Heater
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Anchor system installation

Anchor system installation
Video:

Anti-Freeze- Solar Hot Water

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Apply a nylon tie on top of the tape.

Apply a nylon tie on top of the tape.
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Apply a robust amount of UL-181 fiber reinforced duct sealant mastic paste to cover well past the edges of the tape.

Apply a robust amount of UL-181 fiber reinforced duct sealant mastic paste to cover well past the edges of the tape.
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Apply a thick layer of UL-181 fiber reinforced duct sealant mastic paste spanning over the polyester film of the flex duct core, the tape, and nylon tie, to the take-off collar.

Apply a thick layer of UL-181 fiber reinforced duct sealant mastic paste spanning over the polyester film of the flex duct core, the tape, and nylon tie, to the take-off collar.
Video:

Are you prepared with water in your Go Kit?

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Assembled section of fiber board duct

Assembled section of fiber board duct
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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