As an AI language model, I don't have access to specific information about particular duplex villas. However, a few common types of geothermal heating and cooling systems include:
1. Closed-loop vertical system: This system uses a series of vertical boreholes drilled deep into the ground where a heat exchange fluid is circulated and absorbs heat from the earth for heating or dissipates heat to the earth for cooling.
2. Closed-loop horizontal system: In this system, pipes are buried horizontally in trenches where they exchange heat with the earth.
3. Open-loop system: This system pumps groundwater from a well and returns it to another well after the exchange of heat.
4. Hybrid system: A combination of any of the above systems depending on specific climate and installation needs.
The choice of the system will depend on factors such as the soil type, installation layout, and local geology and hydrology.
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