What could be a consequence of not properly venting a refrigeration system?

Improper venting of a refrigeration system can lead to increased pressure within the system. When refrigerant gases are not allowed to escape and release pressure as needed, the result can be an unsafe buildup of pressure. This elevated pressure can cause various issues, including the potential for system failure, which may manifest as leaks, component damage, or even catastrophic failures in extreme cases. Proper ventilation is crucial for maintaining safe and efficient operation of a refrigeration system, as it ensures that gases within the system can be appropriately managed to prevent over-pressurization.

The other options do not align with the consequences resulting from improper venting. Lower energy consumption, improved cooling efficiency, and reduced noise levels are outcomes not associated with inadequate venting; instead, these aspects may worsen due to heightened pressure and inefficient operation caused by improper venting.