Nate Core Practice Test 2025 – Comprehensive Exam Prep

In HVAC systems, a drier primarily functions to remove moisture from the refrigerant. This is crucial because moisture in the refrigerant can cause various operational issues, such as corrosion in components, ice formation, and reduced efficiency. The presence of moisture can lead to the formation of acids that can deteriorate system components and affect the overall lifespan and reliability of the HVAC system.

The drier typically utilizes desiccants or filtering materials that attract and absorb water, ensuring the refrigerant remains dry as it circulates through the system. Maintaining a moisture-free refrigerant is vital for the efficient operation of an HVAC system, as it helps preserve the integrity of the system and prevents performance losses.

Circulating air, enhancing cooling efficiency, or serving as a backup heating source are functions attributed to other components within an HVAC system, not specifically the drier. Thus, the role of the drier is essential in maintaining the health and efficiency of HVAC systems.