Oklahoma Service Technician Practice Exam

The term 'condensation' in HVAC specifically refers to the process of water vapor changing into liquid form. This is commonly observed on cooling coils, where warm, moist air comes into contact with the cold surfaces. When the air cools, its capacity to hold water vapor decreases, causing some of the vapor to transition into liquid water, which collects as condensation. This phenomenon is crucial in HVAC systems because it contributes to dehumidification, improving indoor air quality and comfort.

The other options describe different HVAC processes but do not accurately represent the definition of condensation. The cooling process of air focuses more on temperature reduction rather than the state change of water vapor. Heat transfer refers to the movement of thermal energy between substances but does not specifically address the liquid transformation of water vapor. Raising temperature in ductwork pertains to heating systems, which is unrelated to how condensation occurs or is identified in HVAC terminology.