Low temperature geothermal systems

A ground source heat pump provides a clean way to heat and cool buildings, free of all carbon emissions on site.

Working with an underground loop system, geothermal heating and cooling systems utilize te constant temperature of underground to exchange energy between your home and the earth as needed for heating and cooling.

In winter, water circulating inside a sealed underground loop system absorbs heat from the earth and carries it to the geothermal unit. Here it is compressed to a higher temperature and sent as warm air to your indoor system for circulation throughout your home.

In the summer, the system reverses and expels heat from your home into the cooler earth via the loop system. This is a natural and highly efficient way to create a comfortable climate in your home.

We can install it anywhere, using a geothermal borehole or water wells, or extracting heat from a pond, a lake or the sea. The only energy used by a ground source heat pump is electricity to power the compressor and the circulation pumps which transfer heat energy from the ground into the building. A well designed ground source heat pump installation will deliver four or five times as much thermal energy (heat) as is used in electrical energy to drive the system. For a particularly environmental solution, the GHP can be powered by photovoltaic.

During the summer, geothermal heating and cooling systems absorb heat from your home and transfers it to the underground loop where it is then absorbed by the cooler earth. The geothermal heat pump uses the cool water returning from the ground to create cool.

Vertical Loops

The ideal choice for a geothermal heat pump when available land surface is limited. Well drilling equipment is used to bore small-diameter holes from 50 to 300 meters deep. After the pipes are inserted, the borehole(s) are filled with thermally enhanced grout.

Open Loops

An open loop is used where there is an abundant supply of quality well water. The well must have enough capacity to provide adequate flow for both domestic use and the energy unit. Discharge water should be sent directly to a second recharge well.

We offer a range of optional services including:

  • Economic feasibility study
  • Ground Design
  • Thermal conductivity reports
  • Thermal Response Test (TRT)


Projects references:

  • Open loop geothermal system for air conditioning of the tropical greenhouse of Botanical Garden "Giardino dei Semplici" of Pisa

  • Closed Loop Geothermal Plant - Palazzo del Granduca of Pisa - Tuscany - Italy

  • Several TRT measures in Italy

Implemented Open loop geothermal system Monitoring:

Implemented Closed Loop Geothermal Plant Monitoring: