The Advanced House represents the next generation of energy-efficient housing. The total energy requirements of the house have been reduced to an estimated 31 % of the needs of a conventional home. This has been accomplished by incorporating such features, as a prototype, an Integrated Mechanical System (IMS), high-performance windows, energy-efficient lighting and appliances, high levels of insulation, airtight construction, and an energy-efficient fireplace. According to computer predictions, the advanced House will use 8340 kWh of energy annually for all heating and cooling; an additional 4042 kWh will be consumed by energy efficient lights and appliances. Peak power demand will be below 10 kW, about half the peak demand of a standard house.