There are currently very high levels of air pollution in many cities in the centre and south of Chile due to mostly the intensive use of burning wood heating systems. It is found that the cheapest choice in terms of heating efficiency and price per kWh is a shallow geothermal system. Consequently, a small pilot geothermal project of low enthalpy was designed and built in order to provide an economical and non polluting heating system in the town of Santa Juana, Chile. A small 3.92 kW geothermal heat pump was connected with a net of shallow soil heat absorbers, which were buried 1.5 m in a non-plastic medium dense silt. Thermal properties of this fine deposit of the Bio Bio River, were obtained. Preliminary monitoring results have shown that this shallow geothermal system is able to sustain the interchange circulating water temperature at night to keep around 19 degrees C indoors when the outside temperature is around 10 degrees C.