Energy Consultants are experts in the field of energy analysis. They analyze heating, ventilation and air conditioning (HVAC) systems, as well as the physical structure of a building, looking for potential leaks and inefficiencies. These consultants explain possible energy-saving measures, including changes in control settings, modifications to lighting and new controls or equipments that would make the building more energy efficient. They also help estimate potential costs and energy savings that would accrue after changes are made.