• Ground heat is absorbed using buried loops, a system of polyethylene-coated copper coils containing refrigerant fluid.

• The loops are buried about 60 cm below the ground over a surface area that is 100% to 120% the size of the home to be heated.

• The refrigerant fluid circulates continually through the outdoor and indoors coils. As the condensation process releases energy, the useful heat is transmitted by the loops in the home's flooring. The heating coils embedded in the floor are made of polyethylene-coated copper.