Geothermal heating systems use the Earth's natural heat to warm buildings. They work by transferring heat from the ground into a home through a series of pipes buried underground. This process is efficient because the ground maintains a relatively constant temperature, making it easier to heat or cool spaces. These systems typically consist of a heat pump, a heat exchanger, and a distribution system. The heat pump extracts heat from the ground and distributes it through ductwork or radiant floor systems. Geothermal heating is considered environmentally friendly, as it reduces reliance on fossil fuels and lowers greenhouse gas emissions.