HVAC - EPA Certification Practice Exam 2026 – Comprehensive All-in-One Guide to Exam Success!

The primary function of a compressor in an HVAC system is to pump refrigerant and increase its pressure during the cooling cycle. The compressor plays a crucial role in the refrigeration process by compressing the refrigerant gas, which raises its temperature and pressure. This high-pressure gas then moves to the condenser, where it releases heat and changes from a gas to a liquid state.

By raising the pressure of the refrigerant, the compressor allows for efficient heat transfer within the HVAC system. This process is vital for cooling the air inside a building. As the refrigerant travels through the system, it absorbs heat from the indoor air, providing the desired cooling effect. The compressor's operation is essential for maintaining an effective and efficient cooling cycle, making it a key component of HVAC systems.