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Collars that are specifically made for flexible duct have a raised bead to prevent the duct from slipping off

Collars that are specifically made for flexible duct have a raised bead to prevent the duct from slipping off
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Common exhaust duct not shared by fans in separate dwellings

Common exhaust duct not shared by fans in separate dwellings
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Concept behind an evaporative cooler – warm air is cooled as the air passes through a wet medium and gives up some of its heat to evaporate the water

Concept behind an evaporative cooler – warm air is cooled as the air passes through a wet medium and gives up some of its heat to evaporate the water
CAD File:

Conceptual 2 foot module house drawing

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Conceptual 2 foot module house drawing
CAD File:

Conceptual 3D advanced framing drawing

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Conceptual 3D advanced framing drawing
CAD File:

Conceptual stack framing drawing

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Conceptual stack framing drawing
Case Study:

Concord Cape Prototype

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Condensate from this heat pump water heater is routed to a nearby floor drain, shared with the condensate lines from a condensing gas furnace and an air conditioning coil

Condensate from this heat pump water heater is routed to a nearby floor drain, shared with the condensate lines from a condensing gas furnace and an air conditioning coil
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Condensation droplets are clearly seen on this uninsulated condensate line from an air conditioner located in a hot humid attic.

Condensation droplets are clearly seen on this uninsulated condensate line from an air conditioner located in a hot humid attic.
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Condensation has dripped onto this board and drywall from an uninsulated condensate line on an air conditioner located just above the photo in this unconditioned attic; the water pooling on the drywall will likely soon become evident from below.

Condensation has dripped onto this board and drywall from an uninsulated condensate line on an air conditioner located just above the photo in this unconditioned attic; the water pooling on the drywall will likely soon become evident from below.
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Condensation potential for interior storm window retrofit

Condensation potential for interior storm window retrofit
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Connect the plastic application tunnel from the injection equipment to the supply plenum.

Connect the plastic application tunnel from the injection equipment to the supply plenum.
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Connect the plastic application tunnel to the injection equipment

Connect the plastic application tunnel to the injection equipment
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Connection in place but not sealed

Connection in place but not sealed
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Construct exterior walls with insulated concrete forms (ICFs) that provide insulation without thermal bridging, as well as air sealing, a drainage plane, and high structural strength.

Construct exterior walls with insulated concrete forms (ICFs) that provide insulation without thermal bridging, as well as air sealing, a drainage plane, and high structural strength.
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Construct exterior walls with structural insulated panels (SIPs) to provide an airtight wall with consistent insulation and very little thermal bridging.

Construct exterior walls with structural insulated panels (SIPs) to provide an airtight wall with consistent insulation and very little thermal bridging.
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Continuous supply and exhaust fans rated ≤ 1 sone by manufacturer

Continuous supply and exhaust fans rated ≤ 1 sone by manufacturer
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Continuously-operating ventilation & exhaust fans include readily accessible override controls

Continuously-operating ventilation & exhaust fans include readily accessible override controls
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Contractors will inspect the home and test HVAC equipment for safety concerns before air sealing begins.

Contractors will inspect the home and test HVAC equipment for safety concerns before air sealing begins.
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Cool air flow is produced when the cooling cycle is energized (set thermostat to “cool”)

Cool air flow is produced when the cooling cycle is energized (set thermostat to “cool”)
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Cooling air temperatures that can be achieved by a direct evaporative cooler at various outdoor conditions

Cooling air temperatures that can be achieved by a direct evaporative cooler at various outdoor conditions
CAD File:

Corner installed plywood or OSB as shear bracing

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Corner installed plywood or OSB as shear bracing
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Cover the roll of fiberglass batt with spray foam to air seal it in place

Cover the roll of fiberglass batt with spray foam to air seal it in place
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Creating a soffit allows a duct trunk line to be relocated, reducing the risk of flooding damage to secondary HVAC components.

Creating a soffit allows a duct trunk line to be relocated, reducing the risk of flooding damage to secondary HVAC components.