What component connects the compressor to the evaporator in most HVAC systems?

The refrigerant line serves as a critical component that connects the compressor to the evaporator in most HVAC systems. This line facilitates the flow of refrigerant, which is essential for the heat exchange process that allows the refrigeration cycle to function.

In a typical refrigeration cycle, the compressor pumps refrigerant in a gaseous state to the condenser, where it cools and changes to a liquid state. This liquid refrigerant then travels through the liquid line to the expansion valve, where it expands and cools before entering the evaporator. The evaporator is where the refrigerant absorbs heat from the indoor air, causing it to vaporize and return to the compressor through the suction line.

The term "refrigerant line" encompasses both the liquid line and the suction line, as it refers to the overall pathway used by the refrigerant throughout the system. This is important for understanding how HVAC systems maintain comfortable temperature levels by transferring heat effectively.

The supposed alternatives focus on specific components but do not capture the overall connection role that the broader category of refrigerant lines accomplishes in the system.