HVAC - EPA Certification Practice Exam 2025 - Free EPA Certification Practice Questions and Study Guide

The compressor plays a vital role in the HVAC system by circulating the refrigerant throughout the system. It is responsible for moving the refrigerant from the evaporator, where it absorbs heat from the indoor air, to the condenser, where it releases that heat to the outside environment. By compressing the refrigerant gas, the compressor increases its pressure and temperature, enabling it to travel through the system efficiently. This circulation is crucial for the system's operation, as it allows the refrigeration cycle to continue, ensuring that indoor spaces remain cooled or heated as needed.

The other options do not accurately describe the primary function of the compressor. For instance, absorbing heat from the indoor air is the role of the evaporator coil, while condensing the refrigerant vapor into liquid is a function of the condenser. Air filtration is typically handled by the HVAC system's air filters, not the compressor. Understanding the specific functions of each component in the HVAC system is essential for grasping how they work together to maintain desired indoor temperatures.