Oklahoma Service Technician Practice Exam

Improper refrigerant management can lead to an increased risk of compressor damage because when refrigerant levels are not correctly maintained—whether they are too high or too low—several issues can arise. A low refrigerant charge can cause the compressor to work harder to try and achieve the desired cooling, resulting in overheating. This additional strain may ultimately lead to compressor failure. On the other hand, an overcharged system can cause high pressure, leading to similar risks for the compressor as well as the potential for leaks and other system failures.

In contrast, the other options do not accurately reflect the consequences of improper refrigerant management. For instance, decreased indoor humidity is generally a result of proper refrigerant management, where the right levels can help remove moisture from the air effectively. Increased energy efficiency typically results from maintaining proper refrigerant levels, not from mismanagement, as a balanced charge allows the system to operate optimally. Lastly, improved air quality is associated with a correctly functioning HVAC system that includes proper refrigerant management, while improper management can hinder air quality by allowing pollutants to accumulate. Thus, the correct answer highlights the significant risks associated with inadequate refrigerant handling, specifically regarding the compressor's integrity and overall system performance.