A geothermal HVAC system is a type of heating and cooling system that uses the natural heat of the earth to provide energy efficient heating and cooling. It works by using a series of pipes buried underground to transfer heat from the ground into the home. The heat is then used to heat the air in the home, and the cooled air is then used to cool the home. Geothermal HVAC systems are highly efficient, as they require less energy to operate than traditional HVAC systems. Additionally, they are environmentally friendly, as they do not produce any emissions. Geothermal HVAC systems are a great option for those looking for an energy efficient and eco-friendly way to heat and cool their home.