Which of the following is NOT a major component of an HVAC system?

The correct answer is that the refrigerant is not considered a major component of an HVAC system. In the context of HVAC systems, the major components typically include the evaporator, compressor, and condenser.

The evaporator is responsible for absorbing heat from the space being cooled, allowing the refrigerant to evaporate and carry away the heat. The compressor plays a critical role in circulating the refrigerant by pressurizing it and pushing it through the system. The condenser, on the other hand, releases the absorbed heat from the refrigerant to the outside environment, allowing it to condense back into a liquid.

While the refrigerant is essential to the functioning of the HVAC system, as it is the medium used for heat transfer, it is not a component in the same way that the evaporator, compressor, and condenser are. The refrigerant is a substance that fills the system and facilitates the cooling cycle but does not represent a physical part of the HVAC system itself; instead, it operates within the major components.