As the yet, despite advice that Geothermal systems increase the value of your home, in reality it does not. Someone has to be willing to pay the added benefits of a geothermal system when buying a house for it to be worth more on the market. Most people haven't a clue what geothermal is, let alone that it's the best heating system money can buy. Even during the recent spike of oil and natural gas prices, I haven't heard or seen one commercial about geothermal systems, but heard dozens of radio commercials about how efficient the new gas or oil systems are, "Buy one today!" Someday in the future when gas, oil, propane prices reach unaffordable prices or perhaps the federal governments new energy policies pushes geothermal heating systems your house may be worth more on the open market to buyers, but until then don't count on it. When buyers are looking at a house they are asking how many bed rooms, bath rooms it has, how big are the rooms, the location, but no one asks what the heating / cooling system is. 50 bucks says that without a home inspection, during the housing boom, I could have sold a new house without a heating / cooling system and the new owners wouldn't notice until they moved in and tried to heat or cool the house. When energy costs become so high, that heating methods become so important, that's when one of the first questions buyers ask is what kind of heat it has. THAT'S when you house will be worth more on the open market, with a geothermal system installed.