What is the primary function of the compressor in an HVACR system?

The primary function of the compressor in an HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) system is indeed to pump refrigerant. The compressor plays a crucial role in the refrigeration cycle, which is fundamental to the operation of cooling systems.

Its main job is to compress the refrigerant vapor, thereby increasing its pressure and temperature before sending it to the condenser. This pressure increase is essential because it facilitates the movement of refrigerant throughout the system and allows the refrigerant to release heat efficiently as it transitions from a high-pressure gas to a liquid state in the condenser. This process ultimately leads to the cooling effect we experience in air conditioning systems.

While expanding refrigerant is a crucial part of the refrigeration cycle, it is not a function performed by the compressor; instead, that role is attributed to the expansion valve or device. Cooling air and heating water are outcomes associated with HVACR systems, but they are not the direct functions of the compressor itself. The compressor specifically focuses on moving and pressurizing the refrigerant, which is vital for the entire cooling process to occur.