No, HVAC and geothermal are not the same. HVAC systems use air to heat and cool a space, while geothermal systems use the ground to transfer heat energy. HVAC systems use a combination of air conditioning, heating, and ventilation to regulate the temperature and air quality of a space. Geothermal systems use a series of pipes buried underground to transfer heat energy from the ground into a building, or to extract heat energy from a building and transfer it back into the ground. Both systems are effective ways to regulate the temperature and air quality of a space, but they are not the same.