The open loops passive cooling series Geothermal pumps contain both compressor and blower sections of the Geothermal pump in one cabinet. Optional desuperheater coils for production of domestic hot water are also available. Units are intended to pump water from an open well and discharge the water either to a return well, pond, leaching field or other suitable method. Units are available in either horizontal or vertical configuration. All units supplied with Electronic 2-stage heat 1-stage cool thermostat.