On February 1621, 2009, the National Renewable Energy Laboratory (NREL), Mountain Energy Partnership (a subcontractor of NREL), and the Consortium of Advanced Residential Buildings conducted short-term field tests on a house in the Wisdom Way Solar Village (G3, community scale, 40% savings level, cold climate). The house design features exceptionally tight construction, highly insulated envelopes, efficient ventilation and space heating design, and on-site renewable energy. As the technical support for the U.S. Department of Energy Building America, NREL conducted field tests to verify that the prototype houses achieve the energy efficiency goal and maintain indoor air quality and comfort. Specifically, the Wisdom Way field test is targeted at verifying the performance of the point source heating, exhaust fan ventilation, and innovative distribution/transfer fan effectiveness in air and heat distribution.