The Geopack is the latest geothermal heating system from Avenir Energie. The Geopack captures the free and unlimited energy that naturally exists in the soil, and converts it to a useable form via a heat-pump generator. The hot water produced is used in a traditional water based under-floor or radiator based system. Loops of small diameter polyethylene-coated copper tube are buried between 50cm and 60cm below the surface of the garden of the house to form a captor through which refrigerant fluid is pumped, typically R407c blend. A scroll compressor and a stainless steel plate heat exchanger within the generator unit complete the circuit to transfer the energy captured from the soil into the house. The energy taken from the soil is quickly and continually replaced by sunlight, wind and rainfall, but at the same time the captor is protected from sudden ambient temperature changes.