As concerns about energy consumption and environmental impact rise, businesses and homeowners are increasingly focused on ensuring their HVAC systems are energy efficient. HVAC systems, responsible for heating, ventilation, and air conditioning, play a significant role in a building’s energy use. An energy-efficient HVAC system reduces utility bills and contributes to a more sustainable environment. This article explores the signs of an energy-efficient HVAC system, the benefits of maintaining one, and practical steps to enhance HVAC energy efficiency.