Which of the following statements is NOT correct concerning the evaporator?

The statement indicates that the evaporator changes heated refrigerant to a liquid, which is not accurate. The primary function of the evaporator is to convert liquid refrigerant into a vapor as it absorbs heat from the environment. In this process, the refrigerant evaporates due to the heat it absorbs, effectively cooling the air that is passed over the evaporator coil. The refrigerant enters the evaporator as a low-pressure liquid and leaves as a low-pressure gas.

In contrast, other options accurately describe aspects of air conditioning and heating systems. Automatic temperature controls are indeed used to maintain the desired temperature in a compartment, enhancing comfort and energy efficiency. Additionally, many modern air-conditioning and heating systems are equipped with computer controls for improved efficiency and user convenience. Finally, it is also true that heaters and air-conditioners can share the same plenum chambers within a duct system, allowing for integrated heating and cooling solutions in a building.