Case study of a DOE Zero Energy Ready home on Johns Island in Charleston, SC, that scored HERS 30 without PV, or HERS 1 with 6-kW of PV. This custom 2-story, 2,085 ft2, home is constructed of structural insulated panels, with 6.5-in. SIPs in the walls and 8.25-in. SIPs in the floor and roof. The HVAC system includes an air-to-water heat pump with fan coil that provides heat, ventilation, and hot water at 4.5 COP, plus a 17.5-EER air conditioner. Air is distributed via small-diameter (2-in.) high-velocity ducts.