FOR MORE INFORMATION ABOUT GEOEXCHANGE AND HEAT PUMPS: Geothermal Heat Pump Consortium at www.geoexchange.org International Ground Source Heat Pump Association at www.igshpa.okstate.edu/ WaterFurnace Heat Pumps at www.waterfurnace.com ClimateMaster Heat Pumps at www.climatemaster.com Commandaire Heat Pumps at www.commandaire.com FOR MORE INFORMATION ABOUT GROUNDWATER: National Ground Water Association at www.ngwa.org Nebraska Well Drillers Association at www.nebraskawelldrillers.org The Groundwater Foundation at www.groundwater.org