Final answer:
The A/C compressor raises the temperature and pressure of the refrigerant gas, allowing it to transfer heat energy to the room and condense into a liquid. It then flows back to the outdoor evaporator coils for cooling through expansion.
Step-by-step explanation:
The A/C compressor is responsible for raising the temperature and pressure of the refrigerant gas in an air conditioning system. The electrically driven compressor uses work input to force the gas into the condenser coils, which are located inside the heated space.
The higher temperature of the gas allows it to transfer heat energy to the room, causing it to condense into a liquid. The compressed gas then flows back through a pressure-reducing valve to the outdoor evaporator coils, where it is cooled through expansion.