A small HVAC system is a type of heating, ventilation, and air conditioning system that is designed to provide a more efficient and cost-effective way to heat and cool a smaller space. These systems are often used in homes, apartments, and other smaller buildings. They are typically much smaller than traditional HVAC systems and are designed to be energy efficient and cost-effective. Small HVAC systems typically consist of a furnace, air conditioner, and air handler. The furnace is responsible for heating the air in the space, while the air conditioner is responsible for cooling the air. The air handler is responsible for circulating the air throughout the space. Small HVAC systems are often more efficient than traditional HVAC systems, as they are designed to be more energy efficient and cost-effective. Additionally, they are typically much quieter than traditional HVAC systems, making them ideal for smaller spaces.