Prices for geothermal heating and cooling service vary depending on the size of the system, the type of installation, and the location. However, in general, prices start at around $4000 for a small home installation. Geothermal heating and cooling is becoming an increasingly popular option because it is a cost-effective way to heat and cool your home. Not only does it save you money on your utility bills, but it also helps to reduce your carbon footprint. So if you're looking for a way to make your home more energy efficient, geothermal heating and cooling is a good option to consider.