Washington, D.C. : United States. Dept. of Energy, 1999. Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
A geothermal heat pump (GHP) system has three major components: a ground loop (buried piping system), the heat pump itself (inside the house), and a heating and cooling distribution system. GHP's are efficient and require no backup heat because the earth stays at a relatively moderate temperature throughout the year.
Report Numbers
E 1.99:nrel/fs-710-26014 E 1.99: doe/go-10099-727 doe/go-10099-727 nrel/fs-710-26014