What is the primary function of a condenser coil in an air conditioning system?

The primary function of a condenser coil in an air conditioning system is to release heat absorbed by the refrigerant. During the refrigeration cycle, the refrigerant absorbs heat from the indoor environment and carries it to the condenser coil, which is located outside.

As the hot refrigerant gas enters the condenser coil, it passes through a series of fins and tubes, where it is cooled by the outside air being blown over the coil, typically by a fan. This process causes the refrigerant to release its heat to the outside environment and change its state from a gas to a liquid. This heat exchange is essential for the system's cooling process to be effective; it allows the refrigerant to prepare for re-entry into the evaporator coil, where it will absorb heat from the indoor air again.

The other options reflect different functions that components in an air conditioning system serve but do not describe the role of the condenser coil. For example, distributing cool air refers to the function of ducts and air handlers, filtering air involves air filters and other purification equipment, and compressing refrigerant relates to the compressor's task, which is distinct from the condenser's heat release function.