The ground temperate is a constant that you can use to heat and cool your house. Over the summer the deep ground temperature is warmer than the air and into he summer it is cooler. The ‘ground-source heat pump system’ uses underground water from a 1,000-foot deep well and pumps, that are basement heat exchangers to move the water.
The system uses no fossil fuels and provide comfort year-round, with zero CO2 emissions, for a fraction of the operating cost of conventional HVAC systems. Geothermal systems also have fewer moving parts than conventional systems, so they are more reliable and require less maintenance, so they last for decades. As a rule of thumb, complete systems run about $2500 to $3500 per 500 square feet of living space. So, a complete geo-thermal system for an average size 2,500 sq. ft. home would run between $12,500 and $17,500. Geo-thermal for larger homes could easily cost $25,000 to $30,000.