NZE House, Boulder, CO
• Conditioned Area: 3805 Sq/Ft
• Walls: R37 Double Stud with Icynene
• Ceiling: R47 Icynene
• Windows: R5 Serious Materials fiberglass
• Heating: Evacuated Tube Solar Thermal
• Cooling: Earth Tubes
• Ventilation: Enerboss HRV
• Air Tightness: 0.068 NACH
• Solar: 7.2kW Photovoltaic System (PV)
Architect Michael Kracauer of
Architropic hired Sustainably Built to perform the initial energy modeling, energy consulting, and final testing of his residence. This project is a net-zero energy home, incorporating evacuated tubes for solar thermal space and water heating, and a large photovoltaic system for electric loads and backup space heat. The passive solar design incorporates super efficient windows from
Serious Materials and uses a double stud wall construction technique to allow for 10" of
Icynene spray foam insulation.
