Can Geothermal Systems Work As A Retrofit?

Although new construction provides an easier opportunity to install a geoexchange system, can they be installed for a retrofit project?
Geoexchange retrofits are possible, though installation costs will typically be higher than in new construction. The distribution system inside the building often provides the greatest challenge. For example, a forced air system designed for a natural gas furnace will require larger diameter ducts, or a radiant floor system designed for a natural gas boiler may require closer pipe centres. The cost of modifying these systems can be prohibitive. A site inspection by a qualified geoexchange engineer will assess the potential for a geoexchange retrofit. As fossil fuel costs continue to rise, geoexchange retrofits will become increasingly viable.