ESCO Air Conditioning Practice Exam 2025 - Free AC Certification Practice Questions and Study Guide

The function of the condenser in an air conditioning system is to release the absorbed heat from the refrigerant and condense it back into a liquid state. When the refrigerant comes from the evaporator, it is in a low-pressure, low-temperature gaseous form after absorbing heat from the indoor air. The refrigerant then flows into the condenser, where it encounters outdoor air or water.

In the condenser, the refrigerant releases the heat it absorbed inside the building to the outside environment. This process causes the refrigerant to lose energy and condense from a gas into a liquid. By efficiently releasing heat, the condenser maintains the proper cycle of refrigeration, allowing the air conditioning system to continue cooling spaces effectively.

Other options describe functions that do not align with the primary role of a condenser. For instance, while absorbing heat and cooling the refrigerant may relate to the evaporator's function, measuring refrigerant flow pertains instead to different system components such as flow sensors, and preventing ice formation relates to various system conditions but isn't a core function of the condenser.