An energy audit is a systematic assessment of a building's energy use. It identifies how energy is consumed and where it can be conserved. This process typically involves examining heating, cooling, lighting, and appliances to determine their efficiency. The goal is to pinpoint areas for improvement, which can lead to reduced energy costs and a smaller environmental footprint. During an energy audit, professionals may use tools like thermal imaging cameras and blower doors to detect air leaks and insulation issues. The findings help homeowners or businesses implement changes, such as upgrading HVAC systems or improving insulation, ultimately enhancing energy efficiency.