An evaporator coil is a key component in refrigeration and air conditioning systems. It is responsible for absorbing heat from the surrounding air or fluid, which causes the refrigerant inside the coil to evaporate. This process cools the air that is then circulated throughout a building or space, helping to maintain a comfortable temperature. The evaporator coil works in conjunction with other components, such as the compressor and condenser, to create a continuous cycle of heat exchange. Proper maintenance of the evaporator coil is essential for efficient system performance and energy savings, as dirt and debris can hinder its ability to absorb heat effectively.