Final answer:
A standard air conditioning system can be easily converted to a heat pump by adding a few key components. A heat pump uses work to transfer energy by heat from a warmer environment to a colder environment.
Step-by-step explanation:
A standard air conditioning system can be easily converted to a heat pump by adding a few key components. This statement is true.
A heat pump uses work to transfer energy by heat from a warmer environment to a colder environment. In the heating mode, heat transfer occurs to the working fluid in the evaporator from the colder outdoor air, turning it into a gas. The electrically driven compressor increases the temperature and pressure of the gas and forces it into the condenser coils inside the heated space. Because the temperature of the gas is higher than the temperature in the room, heat transfer from the gas to the room occurs as the gas condenses to a liquid.