Having passed the gauntlet of rigorous engineering verification tests and computer simulations mandated by the U.S. Department of Energy (DOE), the National Association of State Energy Officials (NASEO), and Residential Energy Services Network (RESNET), EnergyCheckup becomes only the third Home Energy Rating System (HERS) provider to become certified in California. EnergyCheckup also meets criteria of the Department of Housing and Urban Development (HUD), the Federal Housing Administration (FHA), Fannie Mae, Freddie Mac, and is an ENERGY STAR Partner with the Environmental Protection Agency's (EPA) ENERGY STAR Labeled Home Program. EnergyCheckup is an environmentally responsible joint business venture launched by Inspectech, a subsidiary of Land America OneStop Inc., and GeoPraxis, Inc., the leading provider of web-based building energy simulation analysis tools and solutions.