What is a common result of overcharging an HVAC system?

Overcharging an HVAC system typically leads to high pressure readings within the system. When the refrigerant levels exceed the manufacturer’s specifications, it can cause the pressure in the evaporator and condenser coils to rise significantly. This elevated pressure can lead to various operational problems, including potential damage to components such as the compressor. As high pressure results in increased resistance within the system, it can adversely affect the system's overall performance and efficiency.

In contrast, increased cooling efficiency, lower energy costs, and enhanced airflow are outcomes typically associated with correct refrigerant charging. An overcharged system would not achieve these benefits; rather, it would be inefficient and potentially harmful.