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Compare gas tankless water heater efficiencies on the Energy Guide labels or look for the ENERGY STAR label

Compare gas tankless water heater efficiencies on the Energy Guide labels or look for the ENERGY STAR label
CAD File:

Conceptual insulation at cape-style roof - ceiling and knee wall cavity insulation

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Conceptual insulation at cape-style roof - ceiling and knee wall cavity insulation
CAD File:

Conceptual insulation at cape-style roof - roof cavity insulation with rigid insulation closure

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Conceptual insulation at cape-style roof - roof cavity insulation with rigid insulation closure
CAD File:

Conceptual insulation practice at attic-style truss system - above conditioned space

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Conceptual insulation practice at attic-style truss system - above conditioned space
CAD File:

Conceptual insulation practice at attic-style truss system - above unconditioned space

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Conceptual insulation practice at attic-style truss system - above unconditioned space
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Core plumbing layout

Core plumbing layout
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Core plumbing layout - plumbing diagram long-trunk-short twig.

Core plumbing layout - plumbing diagram long-trunk-short twig.
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Core plumbing layout – plumbing diagram long-trunk-short twig

Core plumbing layout – plumbing diagram long-trunk-short twig
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Cross section showing points of reinforcement and attachment to secure the chimney to the roof and ceiling joists.

Cross section showing points of reinforcement and attachment to secure the chimney to the roof and ceiling joists.
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Cut a neat hole in the ceiling with smooth edges in which the exhaust fan housing will fit snugly

Cut a neat hole in the ceiling with smooth edges in which the exhaust fan housing will fit snugly
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Cut-away view showing unsealed gaps around a heating duct that goes through a wall

Cut-away view showing unsealed gaps around a heating duct that goes through a wall
Presentation:

Design Options for Locating Ducts within Conditioned Space

Design Options for Locating Ducts within Conditioned Space
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Desuperheater for domestic hot water

Desuperheater for domestic hot water
Case Study:

DOE ZERH HIA 2017 Case Study: Thrive Home Builders, Courtyard Rows, Lone Tree, CO

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Drainback active indirect system

Drainback active indirect system
Video:

Dropped Ceiling/Soffit Below Unconditioned Attic

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Dropped hallway ceiling duct chase with drywalled soffit

Dropped hallway ceiling duct chase with drywalled soffit
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Dropped hallway ceiling with drywall

Dropped hallway ceiling with drywall
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Drywall is installed, hiding the duct work

Drywall is installed, hiding the duct work
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Duct work is strapped to the chase ceiling

Duct work is strapped to the chase ceiling
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During drought periods, an integrated back-up system adds city water to maintain the Durable Energy home’s 11,500-gallon cistern at 25% capacity or more.

During drought periods, an integrated back-up system adds city water to maintain the Durable Energy home’s 11,500-gallon cistern at 25% capacity or more.
Presentation:

Efficient Hot Water Distribution Part 1: What’s at Stake

Efficient Hot Water Distribution Part 1: What’s at Stake
Presentation:

Efficient Hot Water Distribution Part 2: How to Get it Right

Efficient Hot Water Distribution Part 2: How to Get it Right
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Efficient showerheads can save 2,900 gallons of water per year.

Efficient showerheads can save 2,900 gallons of water per year.