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Image:

For homes with heating registers in the ceiling or floor, air seal where the duct boots meet the ceiling drywall or the flooring to prevent heat loss around the register.

For homes with heating registers in the ceiling or floor, air seal where the duct boots meet the ceiling drywall or the flooring to prevent heat loss around the register.
CAD File:

Front view of horizontal air handler showing condensate drain pans and drain lines

Preview Image
Front view of horizontal air handler showing condensate drain pans and drain lines
CAD File:

Front view of horizontal air handler showing condensate drain pans, pipes, and controls

Preview Image
Front view of horizontal air handler showing condensate drain pans, pipes, and controls
CAD File:

Front view of horizontal air handler showing outdoor air intake, dampers, supply and return, and condensate drain pans, drain pipe and trap, and drain overflow safety cut off switch

Preview Image
Front view of horizontal air handler showing outdoor air intake, dampers, supply and return, and condensate drain pans, drain pipe and trap, and drain overflow safety cut off switch
CAD File:

Front view of horizontal air handler showing outdoor air intake, dampers, supply and return, emergency drain pan, and drain overflow safety cut off switch

Preview Image
Front view of horizontal air handler showing outdoor air intake, dampers, supply and return, emergency drain pan, and drain overflow safety cut off switch
CAD File:

Front view of vertical air handler condensate disposal and controls

Preview Image
Front view of vertical air handler condensate disposal and controls
Image:

Furnaces, boilers, and water heaters located within the home’s pressure boundary are mechanically drafted or direct-vented

Furnaces, boilers, and water heaters located within the home’s pressure boundary are mechanically drafted or direct-vented
Image:

Gas-fired condensing boiler is installed as a direct vent appliance

Gas-fired condensing boiler is installed as a direct vent appliance
Case Study:

GreenCraft Builders 2009 TimberCreek Net Zero Energy House Prototype

Case Study:

GreenCraft Greenspoint House Prototype

Image:

Ground-source heat pump diagram

Ground-source heat pump diagram
Image:

Hand tools for cutting fiber board sheets include a knife, straight edge, and color-coded edge-cutting tools

Hand tools for cutting fiber board sheets include a knife, straight edge, and color-coded edge-cutting tools
Video:

Heat Recovery Ventilator (HRV)

Case Study:

High Performance Builder Spotlight: Baldwin Homes Inc.

Case Study:

High Performance Builder Spotlight: Cobblestone Homes

Case Study:

High Performance Builder Spotlight: Tommy Williams Homes

Presentation:

High Performance HVAC: Low-Load and Plug-n-Play HVAC Systems

High Performance HVAC: Low-Load and Plug-n-Play HVAC Systems
Case Study:

High Ridge Custom Homes: Mixed, Humid Climate Region

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High-Efficiency Gas Furnace

High-Efficiency Gas Furnace
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Hood capture area that extends out from under the soffit surface must be temporarily sealed.

Hood capture area that extends out from under the soffit surface must be temporarily sealed.
Image:

Horizontal framing is attached to the awning supports, then metal roofing is screwed directly into the framing to provide a roof over the heat pump compressor unit.

Horizontal framing is attached to the awning supports, then metal roofing is screwed directly into the framing to provide a roof over the heat pump compressor unit.
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HVAC equipment should never be exposed to the garage; instead, locate them in air-sealed closets, with weatherstripping, spring-loaded hinges, and mastic.

HVAC equipment should never be exposed to the garage; instead, locate them in air-sealed closets, with weatherstripping, spring-loaded hinges, and mastic.
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If HVAC duct must be installed in an exterior wall, separate it from the exterior with at least R-6 of continuous rigid insulation

If HVAC duct must be installed in an exterior wall, separate it from the exterior with at least R-6 of continuous rigid insulation
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If integrating an ERV/HRV with the heating/cooling duct system, add dedicated ducts for either the supply or return side to prevent short-circuiting of air distribution

If integrating an ERV/HRV with the heating/cooling duct system, add dedicated ducts for either the supply or return side to prevent short-circuiting of air distribution