What happens if refrigerant is left in a system without proper maintenance?

When refrigerant is left in a system without proper maintenance, it can lead to significant issues that impact the system's operational integrity and efficiency. Over time, contaminants such as moisture, particulates, and acid can build up within the refrigerant charge, especially if the system is not regularly serviced. These contaminants can corrode internal components, leading to mechanical failure.

Additionally, without maintenance, the system may not be adequately monitored for leaks or other performance issues. As a result, this neglect can lead to reduced efficiency, increased energy consumption, and ultimately, total system failure. System components like compressors may be particularly susceptible, as they require a clean and stable operating environment to function correctly.

While proper refrigerant levels are essential for system performance, simply leaving refrigerant in the system without addressing potential contamination or mechanical wear does not enhance efficiency, increase the charge appropriately, or prevent leaks. Hence, the reality of inadequate maintenance potentially leading to system failure aligns with the understanding of how refrigerants behave in aging or neglected equipment.